Rat Laboratory Test - External Features

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Rat Laboratory Test - External Features - Quiz

Welcome to electronic science frontier classroom of the 21st century. Today, you are being tested on external features of the common biology laboratory rat. Questions for this test have been taken from the guide: rat external anatomy under "lecture notes".
You will have an unlimited number of attempts to acquire the knowledge and test-taking skills. Each attempt will result in new questions and answers generated for the test!
I wish you the best of luck on the various body systems for common laboratory rat,as they will relate to human anatomy and physiology. Read more


Questions and Answers
  • 1. 

    What are a rats whiskers called?  

    • A.

      Forelimbs

    • B.

      Integument

    • C.

      Thoracic Region

    • D.

      Prepuce

    • E.

      Vibrissae

    Correct Answer
    E. Vibrissae
    Explanation
    Rats' whiskers are called vibrissae. Vibrissae are long, stiff hairs that are highly sensitive and located on the rat's face. These whiskers help rats navigate their surroundings by detecting changes in air currents and objects in their path. They provide rats with a sense of touch and help them explore their environment, find food, and avoid obstacles.

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  • 2. 

    What is the name of the chest region of your rat specimen?

    • A.

      Cervical Region

    • B.

      Cranial Region

    • C.

      Pectoral Region

    • D.

      Pelvic Region

    • E.

      Thoracic Region

    Correct Answer
    E. Thoracic Region
    Explanation
    The correct answer is Thoracic Region. The thoracic region refers to the chest region of the rat specimen. It is the area between the neck and the abdomen, and it contains the thoracic cavity which houses the organs such as the heart and lungs.

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  • 3. 

    A rats tail has hair on the external surface.

    • A.

      False - only when 3 months old

    • B.

      False - only when 6 months old

    • C.

      False - only when 12 months old

    • D.

      False - not at any age of the rats life

    • E.

      True

    Correct Answer
    D. False - not at any age of the rats life
    Explanation
    Rats do not have hair on their tails at any age of their life.

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  • 4. 

    What body region are the back legs attached?

    • A.

      Abdomen Region

    • B.

      Cervical Region

    • C.

      Pelvic Region

    • D.

      Pectoral Region

    • E.

      Answer is not present

    Correct Answer
    C. Pelvic Region
    Explanation
    The back legs are attached to the pelvic region. The pelvic region is the area of the body located between the abdomen and the thighs, and it is where the pelvis is located. The pelvis is a bony structure that provides support and attachment for the legs, including the back legs. Therefore, the correct answer is the pelvic region.

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  • 5. 

    What surface are the rats "teats" located?  

    • A.

      Ventral

    • B.

      Caudal

    • C.

      Cranial

    • D.

      Dorsal

    • E.

      Anterior

    Correct Answer
    A. Ventral
    Explanation
    The correct answer is Ventral. The term "ventral" refers to the belly or underside of an animal. In the context of the question, the "teats" of the rats would be located on their ventral surface.

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  • 6. 

    What structures are located in the corner of the rats eyes?

    • A.

      Auditory meatus

    • B.

      Eyelids

    • C.

      Nictitating membrane

    • D.

      Pinna

    • E.

      Urinary aperture

    Correct Answer
    C. Nictitating membrane
    Explanation
    The nictitating membrane is a transparent or translucent third eyelid that is present in some animals, including rats. It is located in the corner of the rat's eyes and helps to protect the eyes from dust, debris, and other foreign objects. The nictitating membrane can also provide additional moisture and lubrication to the eyes.

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  • 7. 

    What position is the rats anus found?  

    • A.

      Dorsal to the incisors

    • B.

      Dorsal to the vulva

    • C.

      Superior to the Vibrissae

    • D.

      Ventral to the base of the tail

    • E.

      Ventral to the abdominal region of the body

    Correct Answer
    D. Ventral to the base of the tail
    Explanation
    The correct answer is "Ventral to the base of the tail." This means that the rat's anus is located on the underside of its body, specifically below the base of its tail.

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  • 8. 

    What structures are used by rats for gnawing?

    • A.

      Urogenital Orifice

    • B.

      Pinna

    • C.

      Incisors

    • D.

      Eyelids

    • E.

      Auditory Meatus

    Correct Answer
    C. Incisors
    Explanation
    Rats use their incisors for gnawing. Incisors are their front teeth that are sharp and continuously growing. These teeth are specifically adapted for gnawing and chewing through various materials, such as wood, wires, and even some metals. Rats rely on their incisors to maintain their teeth's length and shape, as well as to access food and create nesting spaces. Their incisors are strong and durable, allowing them to exert significant force while gnawing.

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  • 9. 

    Just posterior of the last teat you will observe the ___  ___?  

    • A.

      Abdominal Region

    • B.

      Nipples

    • C.

      Scrotal Sacs

    • D.

      Urinary Aperture

    • E.

      Urogenital Orifice

    Correct Answer
    D. Urinary Aperture
    Explanation
    The urinary aperture is located just posterior (behind) the last teat. This is the opening through which urine is expelled from the body.

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  • 10. 

    Which sex has a vaginal orifice?

    • A.

      Female

    • B.

      Male

    • C.

      Both sexes of mature rats

    • D.

      Neither sex of mature rats

    • E.

      Both sexes of young rats only

    Correct Answer
    A. Female
    Explanation
    The correct answer is female because females have a vaginal orifice, which is an opening in the female reproductive system that allows for the passage of menstrual blood, the insertion of tampons or menstrual cups, and the entry of sperm during sexual intercourse. Males do not have a vaginal orifice. The options regarding rats are irrelevant to the question.

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  • 11. 

    What region is the rat's head found?  

    • A.

      Thoracic Region

    • B.

      Pelvic Region

    • C.

      Pectoral Region

    • D.

      Cranial Region

    • E.

      Abdominal Region

    Correct Answer
    D. Cranial Region
    Explanation
    The rat's head is found in the cranial region. This region refers to the area at the front of the body, specifically the skull and the structures within it. The cranial region contains important organs such as the brain, eyes, ears, and mouth.

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  • 12. 

    What structures are found in the female's scrotal Sacs?

    • A.

      Eyelids

    • B.

      Pinna

    • C.

      Nictitating membrane

    • D.

      Testes

    • E.

      Scrotal sacs are not found in female rats

    Correct Answer
    E. Scrotal sacs are not found in female rats
    Explanation
    The correct answer is that scrotal sacs are not found in female rats. This means that female rats do not have scrotal sacs. Scrotal sacs are typically found in male rats and are responsible for housing the testes. Since female rats do not have testes, they do not have scrotal sacs.

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  • 13. 

    What is the anatomical name for a rats ear canal?

    • A.

      Auditory Canal

    • B.

      Auditory Meatus

    • C.

      Auditory Pinna

    • D.

      Auditory Aperature

    • E.

      Auditory Muscle

    Correct Answer
    B. Auditory Meatus
    Explanation
    The anatomical name for a rat's ear canal is the auditory meatus.

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  • 14. 

    What is the structure located at the end of a male rats penis?

    • A.

      Nictitating Membranes

    • B.

      Scrotal Sacs

    • C.

      Testes

    • D.

      Urinary Aperature

    • E.

      Urogenital Orifice

    Correct Answer
    E. Urogenital Orifice
    Explanation
    The urogenital orifice is the correct answer because it refers to the structure located at the end of a male rat's penis. This orifice serves as the opening for both the urinary and reproductive systems, allowing the rat to excrete urine and ejaculate semen.

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  • 15. 

    How many different anatomical regions is the rat's body divided into?

    • A.

      5

    • B.

      6

    • C.

      8

    • D.

      10

    Correct Answer
    B. 6
    Explanation
    The rat's body is divided into six different anatomical regions. This suggests that there are specific areas or parts of the rat's body that are distinct and separate from each other. These regions may include the head, neck, thorax, abdomen, pelvis, and tail. Each region serves different functions and contains different organs or structures.

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  • 16. 

    Which body region has the front legs attached?

    • A.

      Cranial region

    • B.

      Cervical region

    • C.

      Pectoral region

    • D.

      Thoracic region

    • E.

      Abdominal region

    • F.

      Pelvic region

    Correct Answer
    C. Pectoral region
    Explanation
    The pectoral region is the correct answer because it is the area of the body where the front legs are attached. The pectoral region is located in the upper chest area, between the neck and the abdomen. It is responsible for the attachment and movement of the front limbs, including the legs.

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  • 17. 

    Which body region is the belly located?

    • A.

      Cranial region

    • B.

      Cervical region

    • C.

      Pectoral region

    • D.

      Thoracic region

    • E.

      Abdominal region

    • F.

      Pelvic region

    Correct Answer
    E. Abdominal region
    Explanation
    The belly is located in the abdominal region. This region is located between the thoracic region and the pelvic region. It is the area of the body that contains the stomach, intestines, liver, and other organs involved in digestion. The abdominal region is commonly referred to as the "belly" or "stomach area."

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  • 18. 

    Which body region has the area where the back legs are attached?

    • A.

      Cranial region

    • B.

      Cervical region

    • C.

      Pectoral region

    • D.

      Thoracic region

    • E.

      Abdominal region

    • F.

      Pelvic region

    Correct Answer
    F. Pelvic region
    Explanation
    The area where the back legs are attached is known as the pelvic region. This region is located in the lower part of the body, between the abdomen and the thighs. It contains the pelvis, which is a bony structure that supports the weight of the upper body and connects the spine to the lower limbs. The pelvic region is responsible for providing stability and support for the back legs, allowing for movement and locomotion.

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  • 19. 

    Which body region has the neck?

    • A.

      Cranial region

    • B.

      Cervical region

    • C.

      Pectoral region

    • D.

      Thoracic region

    • E.

      Abdominal region

    • F.

      Pelvic region

    Correct Answer
    B. Cervical region
    Explanation
    The neck is located in the cervical region of the body. This region is specifically associated with the neck and includes the vertebrae and muscles that support and allow movement of the head. The cervical region is situated between the cranial region (which includes the head) and the thoracic region (which includes the chest). Therefore, the correct answer is the cervical region.

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  • 20. 

    The mouth has a large cleft in the upper lip which exposed large front _____. Since rats are gnawing mammals these structures continue to grow for as long as the rat lives.

    Correct Answer
    incisors
    Explanation
    The mouth of a rat has a large cleft in the upper lip that exposes its large front incisors. Rats are gnawing mammals, so their incisors continue to grow throughout their lives.

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  • 21. 

    Check choose all structures which belong to the urogenital system on laboratory rats.

    • A.

      Pinna

    • B.

      Scrotal sac

    • C.

      Vulva

    • D.

      Prepuce

    • E.

      Pupil

    • F.

      Testes

    Correct Answer(s)
    B. Scrotal sac
    C. Vulva
    D. Prepuce
    F. Testes
    Explanation
    The urogenital system in laboratory rats includes the reproductive and urinary organs. The scrotal sac, vulva, prepuce, and testes are all structures that belong to the urogenital system. The scrotal sac is a pouch of skin that contains the testes, which are the male reproductive organs. The vulva is the external opening of the female reproductive system. The prepuce is the foreskin that covers the penis in males. Therefore, all these structures are part of the urogenital system in laboratory rats.

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  • 22. 

    The frontal plane divides the laboratory rat's body into dorsal and ventral views.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The frontal plane is a vertical plane that divides the body into front (ventral) and back (dorsal) sections. This means that if the frontal plane is applied to a laboratory rat's body, it will divide the body into dorsal and ventral views, making the statement true.

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  • 23. 

    Identify the body part of a common laboratory rat from these structures, ulna, carpal, tibia, and fibula.

    • A.

      Skull

    • B.

      Legs

    • C.

      Tail

    • D.

      Rib cage

    Correct Answer
    B. Legs
    Explanation
    The correct answer is "Legs" because the ulna, carpal, tibia, and fibula are all bones found in the legs of an animal.

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  • 24. 

    There are six vertebrate found in the laboratory rat's lumbar region.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because the lumbar region of a laboratory rat does indeed contain six vertebrates.

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  • 25. 

    The laboratory rat's tail is composed of _____ vertebrae.

    • A.

      Cranial

    • B.

      Cervical

    • C.

      Thoracic

    • D.

      Lumbar

    • E.

      Caudal

    Correct Answer
    E. Caudal
    Explanation
    The laboratory rat's tail is composed of caudal vertebrae. The term "caudal" refers to the tail region of an animal. Therefore, the correct answer is "caudal" as it specifically describes the vertebrae found in the rat's tail.

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  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
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    John Mitchell
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