Rat Dissection Guide: A.L.E.

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Rat Dissection Guide: A.L.E. - Quiz

Welcome to the Electronic Laboratory Exercise for the 21st century. Using the human anatomy and physiology laboratory manual that accompanies your Anthony's Textbook of Anatomy and Physiology. Identify as many anatomic landmarks, regions, directions, planes and cavities as possible.
This exercise has unlimited number of attempts to increase your knowledge and test-taking skills. 40 questions and answers will appear in random order for every attempt.
Good Luck in your human anatomy and physiology class.


Questions and Answers
  • 1. 

    You will be looking at the anatomy of the white rat.  Believe it or not, the white rat is similar in composition to a _____. (Please enter answer in all lower case letters.)

    Explanation
    The correct answer is "human" because the question states that the anatomy of the white rat is similar in composition to a certain organism. Since humans and rats are both mammals, they share many similarities in terms of their anatomical structures and systems. Therefore, it can be inferred that the white rat's anatomy is comparable to that of a human.

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  • 2. 

    What is the Kingdom to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    A. Animalia
    Explanation
    The white rat belongs to the kingdom Animalia because it is an animal. The kingdom Animalia includes all multicellular organisms that are eukaryotic and heterotrophic, meaning they obtain their nutrients by consuming other organisms. Rats are vertebrates and mammals, but these classifications are more specific and fall under the broader category of the Animalia kingdom.

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  • 3. 

    What is the Phylum to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    B. Chordata
    Explanation
    The white rat belongs to the Phylum Chordata. This is because Chordata is the phylum that includes all animals with a notochord, a hollow nerve cord, and pharyngeal slits. Rats, including the white rat, have these characteristics, making them members of the phylum Chordata.

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  • 4. 

    What is the Subphylum to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    C. Vertebrata
    Explanation
    The white rat belongs to the Subphylum Vertebrata because it is a type of mammal that possesses a backbone or vertebral column. This subphylum includes all animals with a well-developed internal skeleton made up of bones or cartilage, such as mammals, birds, reptiles, amphibians, and fish.

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  • 5. 

    What is the Class to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    D. Mammalia
    Explanation
    The white rat belongs to the class Mammalia because it is a mammal. Mammals are a class of animals that are characterized by having mammary glands, which produce milk to nourish their young. They also have hair or fur, are warm-blooded, and have a specialized jaw joint. Rats, including the white rat, are mammals, so they belong to the class Mammalia.

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  • 6. 

    What is the Order to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    E. Rodentia
    Explanation
    The correct answer is Rodentia because it is the taxonomic order to which the white rat belongs. The given options are arranged in a hierarchical manner, starting from the broadest category (Animalia) to the most specific (Rattus novegicus). Rodentia is the order that includes rodents, which are characterized by their continuously growing incisors and other shared anatomical features. Therefore, the white rat, being a member of the Rodentia order, belongs to this taxonomic group.

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  • 7. 

    What is the Family to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    F. Muridae
    Explanation
    The white rat belongs to the family Muridae. This family includes various species of rodents, including rats, mice, and gerbils. Muridae is a large family that is found worldwide and is known for its diverse range of species. Rattus norvegicus, also known as the brown rat or Norway rat, is a common species within the Muridae family.

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  • 8. 

    What is the Genus to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    G. Rattus
    Explanation
    The correct answer is Rattus because Rattus is the genus to which the white rat belongs. The genus Rattus includes various species of rats, including the common or brown rat (Rattus norvegicus), which is often referred to as the white rat in laboratory settings.

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  • 9. 

    What is the species to which the white rat belongs?

    • A.

      Animalia

    • B.

      Chordata

    • C.

      Vertebrata

    • D.

      Mammalia

    • E.

      Rodentia

    • F.

      Muridae

    • G.

      Rattus

    • H.

      Novegicus

    Correct Answer
    H. Novegicus
    Explanation
    The correct answer, "novegicus," refers to the species of the white rat. In taxonomy, organisms are classified into a hierarchical system, starting with the broadest category, which is the kingdom. The white rat belongs to the kingdom Animalia, then the phylum Chordata, followed by the class Mammalia, order Rodentia, family Muridae, and finally the genus Rattus. The specific species name for the white rat is Rattus novegicus.

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  • 10. 

    The specimen you have received is a preserved double-injected specimen.  Double injected refers to the _____ being filled with a red latex, and the veins being filled with blue latex.

    Correct Answer
    arteries
    Explanation
    The correct answer is arteries. In a preserved double-injected specimen, the arteries are filled with red latex, while the veins are filled with blue latex. This technique allows for a clear visualization and differentiation of the two types of blood vessels in the specimen.

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  • 11. 

    The specimen you have received is a preserved double-injected specimen.  Double injected refers to the arteries being filled with a _____ _____, and the veins being filled with blue latex.

    Correct Answer
    red latex
    Explanation
    The specimen is referred to as a preserved double-injected specimen because it has been injected with two different substances. The arteries have been filled with a red latex substance, while the veins have been filled with blue latex. This technique allows for a clear visualization of both the arterial and venous systems in the specimen.

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  • 12. 

    The specimen you have received is a preserved double-injected specimen.  Double injected refers to the arteries being filled with a red latex, and the veins being filled with _____ _____.

    Correct Answer
    blue latex
    Explanation
    The correct answer is blue latex because in a preserved double-injected specimen, the arteries are filled with red latex and the veins are filled with blue latex. This technique is commonly used in anatomy to highlight the different vascular systems within the specimen.

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  • 13. 

    Careful dissecting techniques will be needed to observe all the structures and their connection to other internal structures/organs. You will not need to use a(n)_____.

    • A.

      Scalpel

    • B.

      Straight needle probe

    • C.

      Bent needle probe

    • D.

      Scissors

    • E.

      Safety razor blade

    • F.

      Muscle separator

    Correct Answer
    A. Scalpel
    Explanation
    In order to observe all the structures and their connection to other internal structures/organs, careful dissecting techniques will be needed. A scalpel is a surgical instrument commonly used in dissection to make precise cuts and incisions. Therefore, it is not needed in this case as the focus is on observation rather than cutting or incising.

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  • 14. 

    The _____  needle probe is used to 'tease' apart the organs so you can see more clearly.

    • A.

      Scalpel

    • B.

      Straight

    • C.

      Bent

    • D.

      Scissors

    • E.

      Safety razor blade

    • F.

      Muscle separator

    Correct Answer
    B. Straight
    Explanation
    The straight needle probe is used to 'tease' apart the organs so you can see more clearly. This type of probe has a long, thin, and straight shape, which allows for precise manipulation and separation of tissues or organs during dissection or surgery. Its straight design helps in accessing hard-to-reach areas and provides better visibility, making it an ideal tool for separating and examining organs.

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  • 15. 

    The _____  needle probe is curved and used to 'tease' apart the organs so you can see more clearly.

    • A.

      Scalpel

    • B.

      Straight

    • C.

      Bent

    • D.

      Scissors

    • E.

      Safety razor blade

    • F.

      Muscle separator

    Correct Answer
    C. Bent
    Explanation
    The correct answer is "bent." A bent needle probe is curved, allowing it to be inserted between organs and gently separated to improve visibility. This curved shape helps in navigating through tight spaces and delicate tissues without causing damage.

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  • 16. 

    Always raise structures to be cut with your _____ to prevent damaging organs underneath.

    • A.

      Scalpel

    • B.

      Straight

    • C.

      Bent

    • D.

      Scissors

    • E.

      Safety razor blade

    • F.

      Muscle separator

    • G.

      Forceps

    Correct Answer
    G. Forceps
    Explanation
    Using forceps to raise structures before cutting helps prevent damaging organs underneath. Forceps allow for a precise grip and controlled movement, reducing the risk of accidentally cutting or puncturing organs. This instrument provides a safer and more controlled approach to manipulating tissues during surgical procedures.

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  • 17. 

    Never cut more than is absolutely necessary to expose a part, organ, or structure of the dissected specimen.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    When dissecting a specimen, it is important to only cut the minimum amount necessary to expose the desired part, organ, or structure. This is because excessive cutting can damage or destroy other important structures, potentially making the specimen unusable for further study or analysis. By being careful and precise with the cuts, one can ensure that the specimen remains intact and can be properly examined.

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  • 18. 

    Ventral body cavity (number 21) of the white rat is _____.

    • A.

      Trachea

    • B.

      Thymus gland

    • C.

      Right atrium

    • D.

      Right lung

    • E.

      Diaphragm

    • F.

      Liver

    • G.

      Small intestine

    Correct Answer
    A. Trachea
    Explanation
    The correct answer is trachea. The ventral body cavity of the white rat houses various organs and structures, including the trachea. The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi, allowing air to pass in and out of the lungs. It is located in the front part of the ventral body cavity, making it the correct answer in this case.

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  • 19. 

    Ventral body cavity (number 22) of the white rat is _____.

    • A.

      Trachea

    • B.

      Thymus gland

    • C.

      Right atrium

    • D.

      Right lung

    • E.

      Diaphragm

    • F.

      Liver

    • G.

      Small intestine

    Correct Answer
    B. Thymus gland
    Explanation
    The correct answer is thymus gland. The thymus gland is located in the ventral body cavity of the white rat. It is a small gland that plays a crucial role in the development and maturation of T-cells, which are important for the immune system.

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  • 20. 

    Ventral body cavity (number 23) of the white rat is _____.

    • A.

      Trachea

    • B.

      Thymus gland

    • C.

      Right atrium

    • D.

      Right lung

    • E.

      Diaphragm

    • F.

      Liver

    • G.

      Small intestine

    Correct Answer
    C. Right atrium
    Explanation
    The correct answer is right atrium. The ventral body cavity of the white rat contains various organs, including the heart. The right atrium is one of the chambers of the heart, responsible for receiving deoxygenated blood from the body and pumping it into the right ventricle. This cavity is located in the thoracic region, towards the front of the body.

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  • 21. 

    Ventral body cavity (number 24) of the white rat is _____.

    • A.

      Trachea

    • B.

      Thymus gland

    • C.

      Right atrium

    • D.

      Right lung

    • E.

      Diaphragm

    • F.

      Liver

    • G.

      Small intestine

    Correct Answer
    D. Right lung
    Explanation
    The ventral body cavity of the white rat refers to the space in the front part of the rat's body. The right lung is located in this cavity, making it the correct answer. The trachea is the windpipe and is not part of the ventral body cavity. The thymus gland is located in the chest area but is not part of the ventral body cavity. The right atrium is a chamber of the heart and is not located in the ventral body cavity. The diaphragm is a muscle that separates the thoracic and abdominal cavities but is not part of the ventral body cavity. The liver is located in the abdominal cavity and is not part of the ventral body cavity. The small intestine is also located in the abdominal cavity and is not part of the ventral body cavity.

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  • 22. 

    Ventral body cavity (number 25) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    A. Diaphragm
    Explanation
    The correct answer is diaphragm. The diaphragm is a dome-shaped muscle that separates the thoracic and abdominal cavities in mammals, including white rats. It plays a crucial role in respiration by contracting and relaxing to help with breathing. The diaphragm also helps to maintain the position of organs in the ventral body cavity and prevent them from shifting.

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  • 23. 

    Ventral body cavity (number 26) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    B. Liver
    Explanation
    The correct answer is liver because the ventral body cavity of the white rat is the location where the liver is found. The liver is a large organ responsible for various important functions in the body, such as detoxification, metabolism, and production of bile. It is located in the upper right quadrant of the abdominal cavity, making it a part of the ventral body cavity.

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  • 24. 

    Ventral body cavity (number 27) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    C. Small intestine
    Explanation
    The correct answer is small intestine. The ventral body cavity of the white rat contains various organs, and the small intestine is one of them. The small intestine is a long, coiled tube where most of the digestion and absorption of nutrients takes place. It plays a crucial role in breaking down food and absorbing nutrients into the bloodstream.

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  • 25. 

    Ventral body cavity (number 28) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    D. Cecum
    Explanation
    The ventral body cavity of the white rat contains various organs, including the diaphragm, liver, small intestine, cecum, colon, spleen, and stomach. However, the correct answer is the cecum. The cecum is a pouch-like structure located at the beginning of the large intestine, where the small intestine connects to the colon. It plays a role in the digestion and absorption of nutrients, particularly in herbivores like the white rat.

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  • 26. 

    Ventral body cavity (number 29) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    E. Colon
    Explanation
    The ventral body cavity of the white rat is the space in the front part of its body where the organs are located. The colon is a part of the large intestine, which is located in the ventral body cavity. Therefore, the correct answer is colon.

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  • 27. 

    Ventral body cavity (number 30) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    F. Spleen
    Explanation
    The ventral body cavity of the white rat contains various organs, including the diaphragm, liver, small intestine, cecum, colon, spleen, and stomach. The correct answer, spleen, refers to one of these organs found in the ventral body cavity.

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  • 28. 

    What is the average litter size of babies for the white rat?

    • A.

      1 - 3

    • B.

      4 - 6

    • C.

      7 - 9

    • D.

      6 - 12

    • E.

      10 - 20

    Correct Answer
    D. 6 - 12
    Explanation
    The correct answer is 6 - 12 because the average litter size of babies for the white rat can vary between 6 and 12. This means that on average, a white rat can give birth to a litter of 6 to 12 babies.

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  • 29. 

    The common Rattus norvegicus, body shape is _____, and the tail is never longer than the body and head combined. (Please enter your answer in all lower case letters.)

    Correct Answer
    chubby
    Explanation
    The common Rattus norvegicus has a chubby body shape, and the length of its tail is never longer than the combined length of its body and head.

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  • 30. 

    The common Rattus norvegicus, body shape is chubby, and the _____ is never longer than the body and head combined. (Please enter your answer in all lower case letters.)

    Correct Answer
    tail
    Explanation
    The common Rattus norvegicus, also known as the brown rat or Norway rat, has a chubby body shape. The tail of this rat species is never longer than the combined length of its body and head.

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  • 31. 

    What is the average length in centimeters for a common Rattus norvegicus?

    • A.

      12 - 18

    • B.

      15 - 30

    • C.

      30 - 46

    • D.

      45 - 75

    Correct Answer
    C. 30 - 46
    Explanation
    The average length in centimeters for a common Rattus norvegicus is between 30 and 46 centimeters. This means that most Rattus norvegicus individuals will have a length within this range.

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  • 32. 

    Ventral body cavity (number 31) of the white rat is _____.

    • A.

      Diaphragm

    • B.

      Liver

    • C.

      Small intestine

    • D.

      Cecum

    • E.

      Colon

    • F.

      Spleen

    • G.

      Stomach

    Correct Answer
    G. Stomach
    Explanation
    The correct answer is stomach. The ventral body cavity of the white rat refers to the abdominal cavity, which houses several organs including the stomach. The stomach is responsible for the initial digestion of food through the secretion of gastric juices and the churning of food. It plays a crucial role in the digestive system of the rat.

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  • 33. 

    Ventral body cavity (number 32) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    A. Left lung
    Explanation
    The ventral body cavity of the rat refers to the abdominal cavity, which houses organs such as the stomach, liver, intestines, and reproductive organs. The left lung is not located in the ventral body cavity, so it is not the correct answer.

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  • 34. 

    Ventral body cavity (number 33) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    B. Ventricles
    Explanation
    The ventricles are a part of the ventral body cavity in a rat. The ventricles are chambers in the heart that receive blood from the atria and pump it out to the rest of the body. They are responsible for the circulation of blood and are essential for maintaining proper blood flow and oxygenation throughout the body.

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  • 35. 

    Ventral body cavity (number 34) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    C. Left atrium
    Explanation
    The correct answer is "Left atrium." The ventral body cavity of the rat is a space in the body that contains various organs. The left atrium is a part of the heart, which is located in the ventral body cavity. It is responsible for receiving oxygenated blood from the lungs and pumping it to the left ventricle.

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  • 36. 

    Ventral body cavity (number 35) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    D. Esophagus
    Explanation
    The correct answer is esophagus. The ventral body cavity of the rat refers to the cavity located on the front side of the body. The esophagus is a part of the digestive system and is located in the ventral body cavity. It is a muscular tube that connects the mouth to the stomach, allowing food and liquids to pass through for digestion.

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  • 37. 

    Ventral body cavity (number 36) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    E. Thyroid gland
    Explanation
    The ventral body cavity of the rat is a space that houses various organs. Out of the given options, the thyroid gland is the correct answer as it is located in the ventral body cavity of the rat. The other options such as left lung, ventricles, left atrium, esophagus, larynx, and submandibular gland are not located in the ventral body cavity.

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  • 38. 

    Ventral body cavity (number 37) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    F. Larynx
    Explanation
    The correct answer is larynx. The ventral body cavity of the rat refers to the front portion of the body cavity, and the larynx is a structure located in this region. The larynx is responsible for producing sound and serving as a passageway for air between the pharynx and trachea. It is a part of the respiratory system and plays a crucial role in the vocalization process.

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  • 39. 

    Ventral body cavity (number 38) of the rat is a(n)_____.

    • A.

      Left lung

    • B.

      Ventricles

    • C.

      Left atrium

    • D.

      Esophagus

    • E.

      Thyroid gland

    • F.

      Larynx

    • G.

      Submandibular gland

    Correct Answer
    G. Submandibular gland
    Explanation
    The ventral body cavity of the rat is a space located on the underside of the rat's body. It contains various organs and structures, including the submandibular gland. The submandibular gland is a salivary gland located in the lower jaw area, responsible for producing saliva.

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  • 40. 

    Pelvic cavity of the rat (Number 39) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    A. Adrenal Gland
    Explanation
    The correct answer is Adrenal Gland. The adrenal gland is located in the pelvic cavity of the rat. It is an endocrine gland that produces hormones such as adrenaline and cortisol, which are involved in the body's response to stress and regulation of metabolism.

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  • 41. 

    Pelvic cavity of the rat (Number 40) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    B. Kidney
    Explanation
    The correct answer is kidney because the pelvic cavity of the rat contains the kidney. The kidney is an organ responsible for filtering waste products from the blood and producing urine.

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  • 42. 

    Pelvic cavity of the rat (Number 42) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    D. Seminal vesicle
    Explanation
    The pelvic cavity of the rat contains various organs involved in reproduction and excretion. The seminal vesicle is a glandular structure found in male rats that stores and secretes seminal fluid. It is responsible for nourishing and protecting sperm. Therefore, the correct answer is seminal vesicle.

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  • 43. 

    Pelvic cavity of the rat (Number 41) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    C. Ureter
    Explanation
    The pelvic cavity of the rat contains various organs, including the adrenal gland, kidney, ureter, seminal vesicle, epididymis, testis, scrotum, and penis. However, the correct answer is the ureter. The ureter is a tube-like structure that carries urine from the kidney to the urinary bladder.

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  • 44. 

    Pelvic cavity of the rat (Number 43) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    E. Epididymis
    Explanation
    The correct answer is Epididymis. The pelvic cavity of the rat contains various reproductive organs, and the epididymis is one of them. It is a tightly coiled tube located on the surface of the testis and serves as a storage and maturation site for sperm.

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  • 45. 

    Pelvic cavity of the rat (Number 44) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    F. Testis
    Explanation
    The correct answer is Testis because the question is asking about the pelvic cavity of the rat, and the testis is located in the pelvic cavity.

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  • 46. 

    Pelvic cavity of the rat (Number 45) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    G. Scrotum
    Explanation
    The pelvic cavity of the rat is the space in the body where the reproductive organs are located. The scrotum is a part of the male reproductive system and is responsible for housing and protecting the testes. Therefore, the scrotum is the correct answer as it is directly related to the pelvic cavity and its reproductive functions.

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  • 47. 

    Pelvic cavity of the rat (Number 46) is a(n)_____.

    • A.

      Adrenal Gland

    • B.

      Kidney

    • C.

      Ureter

    • D.

      Seminal vesicle

    • E.

      Epididymis

    • F.

      Testis

    • G.

      Scrotum

    • H.

      Penis

    Correct Answer
    H. Penis
    Explanation
    The correct answer is Penis. The pelvic cavity of the rat contains various reproductive organs, such as the testis, epididymis, seminal vesicle, and penis. The penis is a male reproductive organ that is responsible for delivering sperm during sexual intercourse. It plays a crucial role in the reproductive process and is located within the pelvic cavity of the rat.

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  • 48. 

    Lateral view of the rat's superficial skeletal muscles (number 51) is called a(n)_____.

    • A.

      Trapezius (acromiotrapezius)

    • B.

      Trapezius (spinotrapezius)

    • C.

      Latissimus dorsi

    • D.

      External Oblique

    • E.

      Semitendinosus

    • F.

      Gastrocnemius

    • G.

      Biceps femoris

    • H.

      Gluteus maximus

    • I.

      Triceps brachii

    • J.

      Deltoid (spinodeltoid)

    Correct Answer
    A. Trapezius (acromiotrapezius)
    Explanation
    The correct answer is Trapezius (acromiotrapezius). The question asks for the name of the muscle shown in the lateral view of the rat's superficial skeletal muscles. The trapezius muscle is a large muscle that covers the upper back and extends down to the spine and shoulder blades. It is divided into three parts, one of which is called the acromiotrapezius. Therefore, the correct answer is Trapezius (acromiotrapezius).

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  • 49. 

    Lateral view of the rat's superficial skeletal muscles (number 52) is called a(n)_____.

    • A.

      Trapezius (acromiotrapezius)

    • B.

      Trapezius (spinotrapezius)

    • C.

      Latissimus dorsi

    • D.

      External Oblique

    • E.

      Semitendinosus

    • F.

      Gastrocnemius

    • G.

      Biceps femoris

    • H.

      Gluteus maximus

    • I.

      Triceps brachii

    • J.

      Deltoid (spinodeltoid)

    Correct Answer
    B. Trapezius (spinotrapezius)
    Explanation
    The correct answer is "Trapezius (spinotrapezius)" because the lateral view of the rat's superficial skeletal muscles is specifically referring to the trapezius muscle, which is divided into two parts - the acromiotrapezius and the spinotrapezius. In this case, the spinotrapezius is being referred to.

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  • 50. 

    Lateral view of the rat's superficial skeletal muscles (number 53) is called a(n)_____.

    • A.

      Trapezius (acromiotrapezius)

    • B.

      Trapezius (spinotrapezius)

    • C.

      Latissimus dorsi

    • D.

      External Oblique

    • E.

      Semitendinosus

    • F.

      Gastrocnemius

    • G.

      Biceps femoris

    • H.

      Gluteus maximus

    • I.

      Triceps brachii

    • J.

      Deltoid (spinodeltoid)

    Correct Answer
    C. Latissimus dorsi
    Explanation
    The correct answer is Latissimus dorsi. The question is asking for the name of the muscle shown in the lateral view of the rat's superficial skeletal muscles. The correct answer, Latissimus dorsi, refers to a large muscle in the back that extends from the lower spine to the upper arm.

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