Phylum Nematoda: Hookworms And Ascarids

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Phylum Nematoda: Hookworms And Ascarids - Quiz

Quiz yourself on Hookworms and Ascarids in Phylum Nematoda


Questions and Answers
  • 1. 

    What is the cuticle secreted by?

    Explanation
    The cuticle is secreted by the hypodermis. The hypodermis is a layer of cells located beneath the epidermis, which is the outermost layer of the skin. The cuticle is a waxy, waterproof layer that covers the surface of plants, insects, and some animals, providing protection against water loss, physical damage, and pathogens. In plants, the cuticle is secreted by the epidermal cells, which are located above the hypodermis. However, in insects and some animals, the cuticle is secreted directly by the hypodermis.

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  • 2. 

    Translucent colorless layer of Nematodes.

    Explanation
    The correct answer is Cuticle. Nematodes are microscopic worms that have a translucent colorless layer called the cuticle. The cuticle is a protective outer covering that helps to maintain the shape and structure of the nematode's body. It also acts as a barrier, preventing the loss of moisture and protecting the nematode from environmental factors such as chemicals or predators. The cuticle is an important feature of nematodes and plays a crucial role in their survival and adaptation to different environments.

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  • 3. 

    What are the larval stages in nematodes?

    • A.

      L1, L2, L3, L4, L5

    • B.

      L1, L2, L3, L4

    • C.

      Miracidium, Sporocyst, Rediae, Cercariae, Metacercariae

    Correct Answer
    B. L1, L2, L3, L4
    Explanation
    L5 is the immature adult stage.

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  • 4. 

    How are nematodes transmitted?

    • A.

      Direct

    • B.

      Indirect

    • C.

      Direct, Indirect, Paratenic

    Correct Answer
    C. Direct, Indirect, Paratenic
    Explanation
    Nematodes can be transmitted through direct, indirect, and paratenic means. Direct transmission occurs when nematodes are passed directly from one host to another, such as through contact with infected feces or contaminated soil. Indirect transmission involves the use of intermediate hosts or vectors, such as insects or other animals, which carry and transmit the nematodes to new hosts. Paratenic transmission occurs when nematodes are ingested by a non-host organism, which then serves as a transport host until the nematodes are consumed by the definitive host. Therefore, nematodes can be transmitted through multiple pathways, including direct, indirect, and paratenic transmission.

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  • 5. 

    Pattern of movement from ingestion to adult stage.

    Correct Answer
    migration
    Explanation
    The term "migration" refers to the pattern of movement from ingestion to the adult stage. This suggests that there is a specific movement or journey that organisms go through as they progress from being ingested or consumed to reaching their adult stage. Migration is commonly observed in various species, including birds, fish, and insects, where they travel long distances to find suitable habitats, food sources, or for reproductive purposes. Therefore, migration is the most suitable answer to describe the pattern of movement in this context.

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  • 6. 

    What does VLM stand for?

    Correct Answer
    Visceral larval migrans
    Explanation
    VLM stands for Visceral larval migrans. This term refers to a condition caused by the migration of larvae of certain parasitic worms through the tissues and organs of the body. These larvae can cause inflammation and damage to the affected organs, leading to various symptoms such as fever, abdominal pain, and respiratory issues. Understanding the abbreviation VLM is important in the medical field to correctly diagnose and treat this condition.

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  • 7. 

    What does CLM stand for?

    Correct Answer
    Cutaneous larval migrans
    Explanation
    CLM stands for Cutaneous Larval Migrans. Cutaneous larval migrans is a skin condition caused by the migration of larvae of certain parasitic worms through the skin. It is commonly acquired by walking barefoot on contaminated soil or sand. The larvae penetrate the skin and cause intense itching and a winding red rash. Treatment usually involves topical or oral medications to kill the larvae and relieve symptoms.

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  • 8. 

    What is another name for cutaneous larval migrans?

    Correct Answer
    Creeping eruption
    Explanation
    Cutaneous larval migrans is commonly known as creeping eruption. This condition occurs when certain types of parasitic larvae penetrate the skin, causing a characteristic red, raised, and itchy rash that appears to move or creep under the skin. The term "creeping eruption" accurately describes the appearance and behavior of this condition, making it an appropriate alternative name.

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  • 9. 

    Diarrhea with abdominal cramps caused by Nematodes.

    Correct Answer
    Dysentery
    Explanation
    Dysentery is an infectious disease characterized by diarrhea with abdominal cramps. It is commonly caused by various types of bacteria, viruses, or parasites, including nematodes. Nematodes are a type of roundworm that can infect the intestines and cause symptoms such as diarrhea, abdominal pain, and cramps. Therefore, dysentery is a possible explanation for the symptoms of diarrhea with abdominal cramps caused by nematodes.

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  • 10. 

    This is caused by the adult nematodes attaching, using an anticoagulent, and moving around a lot.

    Correct Answer
    anemia
    Explanation
    The given correct answer, anemia, is caused by the adult nematodes attaching to the host's body and using an anticoagulant to prevent blood clotting. This leads to excessive movement of the nematodes within the host's body, resulting in a decrease in the number of red blood cells and hemoglobin, leading to anemia.

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  • 11. 

    What is the common name for Ancylostoma caninum?

    Correct Answer
    Canine hookworm
    Explanation
    Ancylostoma caninum is commonly referred to as canine hookworm. This parasitic worm primarily infects dogs and causes a condition known as hookworm disease. It attaches itself to the intestinal wall of the dog and feeds on its blood, leading to symptoms such as anemia, weight loss, and diarrhea. Therefore, the correct answer for the common name of Ancylostoma caninum is canine hookworm.

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  • 12. 

    What is the scientific name for the canine hookworm?

    Correct Answer
    Ancylostoma caninum
    Explanation
    The scientific name for the canine hookworm is Ancylostoma caninum.

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  • 13. 

    What is the host of Ancylostoma caninum?

    Correct Answer
    Canids
    Explanation
    The host of Ancylostoma caninum is canids. Canids refer to a family of mammals that includes dogs, wolves, foxes, and other similar species. Ancylostoma caninum is a species of hookworm that primarily infects canids, causing a parasitic infection known as hookworm disease. Therefore, the correct answer to the question is canids, as they are the specific host for Ancylostoma caninum.

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  • 14. 

    Term used in canine hookworms where the adults attach their hooklike mouthparts into the intestinal wall and suck this in.

    Correct Answer
    intestinal plug
    Explanation
    Canine hookworms are parasites that attach their hooklike mouthparts into the intestinal wall of dogs and suck in blood. This process is known as "intestinal plug." The hookworms use their mouthparts to create a plug-like attachment, allowing them to feed on the host's blood and causing damage to the intestinal wall. The term "intestinal plug" accurately describes this mechanism used by hookworms to feed and survive in the host's intestinal tract.

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  • 15. 

    What is the term for this egg and who is it seen in?

    • A.

      Morulated, Dypilidium caninum

    • B.

      Morulated, Ancylostoma caninum

    • C.

      Packeted, Toxocara cati

    Correct Answer
    B. Morulated, Ancylostoma caninum
    Explanation
    The term "morulated" refers to the stage of development of an egg where it has reached a specific level of embryonic development. Ancylostoma caninum is a species of hookworm that commonly infects dogs. Therefore, the correct answer is "morulated, Ancylostoma caninum."

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  • 16. 

    What can the ova of Ancylostoma caninum be killed by?

    Correct Answer
    Freezing temperature
    freezing
    freezing weather
    Explanation
    The ova of Ancylostoma caninum can be killed by freezing temperature, which includes freezing weather. Freezing temperature causes the ova to freeze and eventually die.

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  • 17. 

    How can Ancylostoma caninum be transmitted?

    • A.

      Ingestion of L1, skin penetration, transmammary

    • B.

      Ingestion of L2, skin penetration, transmammary

    • C.

      Ingestion of L3, skin penetration, transmammary

    Correct Answer
    C. Ingestion of L3, skin penetration, transmammary
    Explanation
    Ancylostoma caninum, a parasitic worm, can be transmitted through ingestion of the third-stage larvae (L3), skin penetration, or transmammary transmission. Ingestion of L3 refers to the larvae being ingested by the host through contaminated food or water. Skin penetration occurs when the larvae penetrate the skin of the host, usually through contact with contaminated soil. Transmammary transmission happens when the larvae are passed from the mother to her offspring through the milk.

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  • 18. 

    What does HGE stand for?

    Correct Answer
    hemorrhagic gastroenteritis
    Explanation
    HGE stands for hemorrhagic gastroenteritis, which is a medical condition characterized by inflammation and bleeding in the stomach and intestines. Symptoms may include vomiting, diarrhea (often bloody), abdominal pain, and dehydration. This condition can be caused by various factors such as bacterial or viral infections, dietary changes, or certain medications. Prompt medical treatment is necessary to manage symptoms and prevent complications.

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  • 19. 

    What does LAD stand for?

    Correct Answer
    Lethargy anorexia depression
    Explanation
    LAD stands for Lethargy Anorexia Depression. This acronym is commonly used in medical contexts to refer to a combination of symptoms that include a lack of energy, loss of appetite, and feelings of sadness or hopelessness. These symptoms often occur together and can be indicative of various medical conditions, such as certain infections or chronic diseases.

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  • 20. 

    Which hookworm species is the number one cause for CLM?

    • A.

      Ancylostoma brazilinese

    • B.

      Ancylostoma tubaeforme

    • C.

      Uncinaria stenocephala

    Correct Answer
    A. Ancylostoma brazilinese
    Explanation
    Ancylostoma brazilinese is the number one cause for cutaneous larva migrans (CLM). CLM is a skin condition caused by the larvae of certain hookworm species. Ancylostoma brazilinese is one of the species known to cause CLM.

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  • 21. 

    Which hookworm species is found in cats?

    • A.

      Ancylostoma brazilinese

    • B.

      Ancylostoma tubaeforme

    • C.

      Uncinaria stenocephala

    • D.

      Both B and C are correct

    Correct Answer
    D. Both B and C are correct
    Explanation
    Both Ancylostoma tubaeforme and Uncinaria stenocephala are hookworm species that are found in cats.

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  • 22. 

    What is the term for arrested development by larvae due to immune response from host.

    Correct Answer
    hypobiosis
    Explanation
    Hypobiosis refers to the arrested development of larvae caused by the immune response from the host. When the host's immune system recognizes the larvae as a threat, it triggers a response that halts the development of the larvae. This can occur in various organisms, including parasites, where the larvae enter a dormant state to evade the immune system and increase their chances of survival. Hypobiosis is an adaptive strategy that allows the larvae to persist within the host until conditions are more favorable for their development and reproduction.

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  • 23. 

    What is the term where the parasite comes out of encapsulation and reinfects host and is due to the animals immune suppression at birth?

    Correct Answer
    Peri-parturient rise
    periparturient rise
    Explanation
    The term "peri-parturient rise" or "periparturient rise" refers to the phenomenon where parasites are released from their dormant state and reinfect the host, particularly after giving birth. This rise in parasite numbers is often attributed to the immune suppression that occurs in animals during the birthing process.

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  • 24. 

    What is the term for the resistance to same or related parasite?

    Correct Answer
    Premunition
    Explanation
    Premunition is the term used to describe the resistance to the same or related parasite. It refers to the ability of an individual to develop immunity or resistance against a specific parasite after a previous exposure or infection. This acquired immunity can provide protection against future infections by the same or closely related parasites.

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  • 25. 

    The term for females that can lay a lot of eggs.

    Correct Answer
    prolific
    Explanation
    The term "prolific" is used to describe females who have the ability to lay a large number of eggs. It implies that these females are highly productive and can produce a significant amount of offspring.

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  • 26. 

    The host specificity of Ascarid adults is moderately high and they live in the small intestine.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because Ascarid adults have a moderately high host specificity, meaning they have a preference for a particular host species. Additionally, they are known to reside in the small intestine of their host.

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  • 27. 

    The ova are round with a thick pitted outer shell and a dark embryo.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is describing the characteristics of ova, stating that they are round with a thick pitted outer shell and a dark embryo. This implies that the statement is true.

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  • 28. 

    Ascarids have an indirect life cycle.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Ascarids, also known as roundworms, have a direct life cycle. This means that they do not require an intermediate host to complete their life cycle. Instead, the eggs of the ascarids are passed in the feces of the infected host and can directly infect another host. Therefore, the correct answer is false.

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  • 29. 

    Term for mucous in the feces.

    Correct Answer
    catarrhal
    Explanation
    Catarrhal is the term used to describe the presence of excessive mucus in the feces. This condition can occur due to various factors such as inflammation or infection in the gastrointestinal tract. The mucus in the feces may be seen as a slimy or gel-like substance and can indicate an underlying digestive issue. It is important to consult a healthcare professional if catarrhal is observed in order to determine the cause and appropriate treatment.

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  • 30. 

    What does VLM stand for?

    Correct Answer
    Visceral larval migrans
    Explanation
    VLM stands for Visceral larval migrans. This term refers to a parasitic infection caused by the migration of larvae of certain worms through the tissues and organs of the body. This condition commonly affects young children who have ingested or come into contact with soil or objects contaminated with animal feces containing the worm larvae. The larvae migrate through the body, causing inflammation and damage to various organs, including the liver, lungs, and eyes. Symptoms may include fever, cough, abdominal pain, and visual disturbances. Prompt treatment is necessary to prevent complications.

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  • 31. 

    What does OLM stand for?

    Correct Answer
    Ocular larval migrans
  • 32. 

    What is the common name for Toxocara canis?

    Correct Answer
    Dog roundworm
    Explanation
    Toxocara canis is commonly known as dog roundworm. This parasitic worm is found in the intestines of dogs and can cause various health issues in both dogs and humans. It is transmitted through the ingestion of contaminated soil or feces. The term "dog roundworm" accurately describes the species and its association with dogs, making it the correct answer for the common name of Toxocara canis.

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  • 33. 

    What is the scientific name for the dog roundworm?

    Correct Answer
    Toxocara canis
    Explanation
    Toxocara canis is the correct scientific name for the dog roundworm. This name specifically refers to the roundworm that infects dogs. The scientific name Toxocara canis helps to differentiate this particular species from other types of roundworms found in different animals. It is important to use scientific names to accurately identify and study different species, as common names can vary and be ambiguous.

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  • 34. 

    What is the term for this ova and who does it belong to?

    • A.

      Pitted, Toxocara canis

    • B.

      Pitted, Toxocara cati

    • C.

      Striated, Toxocara canis

    Correct Answer
    A. Pitted, Toxocara canis
    Explanation
    The term for this ova is "Pitted" and it belongs to the parasite Toxocara canis.

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  • 35. 

    What are the routes of infection of Toxocara canis?

    • A.

      Transplacental, Transmammary, Ingestion of Paratenic Host, Ingestion of Infective ova

    • B.

      Transplacental and Transmammary

    • C.

      Transplacental

    Correct Answer
    A. Transplacental, Transmammary, Ingestion of Paratenic Host, Ingestion of Infective ova
    Explanation
    Toxocara canis can be transmitted to the offspring through the placenta during pregnancy (transplacental) and through the milk during lactation (transmammary). Additionally, the parasite can also be transmitted through the ingestion of a paratenic host, which is an intermediate host that harbors the infective larvae. Finally, ingestion of the infective ova shed by the adult worms in the environment can also lead to infection.

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  • 36. 

    What levels of pathologies are there with Toxocara canis?

    • A.

      Subclinical, MIld, Moderate, Severe

    • B.

      Subclinical, Moderate, Severe

    • C.

      Subclinical, Severe

    Correct Answer
    A. Subclinical, MIld, Moderate, Severe
    Explanation
    The correct answer is "Subclinical, MIld, Moderate, Severe". Toxocara canis is a parasitic roundworm that can infect dogs and cause various levels of pathology. Subclinical refers to an infection that does not show any visible signs or symptoms. Mild pathology indicates a mild infection with mild symptoms. Moderate pathology suggests a more significant infection with noticeable symptoms. Severe pathology represents a severe infection with severe symptoms and potential complications.

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  • 37. 

    What is the common name for Toxocara cati?

    Correct Answer
    Cat roundworm
    Explanation
    Toxocara cati is commonly known as cat roundworm. This parasite commonly infects cats and can be transmitted to humans as well. It is a type of roundworm that lives in the intestines of cats, causing various health issues. The name "cat roundworm" accurately describes the species and its association with cats.

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  • 38. 

    What is the scientific name for the cat roundworm?

    Correct Answer
    Toxocara cati
    Explanation
    Toxocara cati is the scientific name for the cat roundworm. This species of roundworm is commonly found in cats and can cause various health issues in both cats and humans. The scientific name helps to identify and classify this specific type of roundworm, distinguishing it from other species of roundworms that may infect different animals.

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  • 39. 

    Which parasite does NOT undergo transplacental migration?

    • A.

      Toxocara canis

    • B.

      Toxocara cati

    • C.

      Toxascaris leonina

    • D.

      Both B and C are correct

    Correct Answer
    D. Both B and C are correct
    Explanation
    Toxocara canis, Toxocara cati, and Toxascaris leonina are all parasites that can undergo transplacental migration, meaning they can pass from the mother to the offspring through the placenta during pregnancy. However, the correct answer states that both options B (Toxocara cati) and C (Toxascaris leonina) are correct, implying that neither of these parasites undergo transplacental migration.

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  • 40. 

    Which parasite undergoes tracheal migration due to minimal immune response of host?"

    • A.

      Toxocara canis

    • B.

      Toxocara cati

    • C.

      Toxascaris leonina

    Correct Answer
    B. Toxocara cati
    Explanation
    Toxocara cati undergoes tracheal migration due to the minimal immune response of the host. This means that the host's immune system does not mount a strong response against the parasite, allowing it to migrate through the trachea more easily.

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  • 41. 

    What is the term for this ova and who is it from?

    • A.

      Pitted, Toxocara canis

    • B.

      Pitted, Toxocara cati

    • C.

      Striated Toxocara cati

    Correct Answer
    B. Pitted, Toxocara cati
    Explanation
    The term for this ova is "Pitted" and it is from the parasite Toxocara cati.

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  • 42. 

    Who is Toxascaris leonina more common in?

    • A.

      Cats

    • B.

      Puppies

    • C.

      Adults and growing dogs

    Correct Answer
    C. Adults and growing dogs
    Explanation
    Toxascaris leonina is more commonly found in adults and growing dogs. This parasitic roundworm primarily infects the intestines of dogs, causing gastrointestinal issues such as diarrhea, vomiting, and weight loss. While it can also infect cats and puppies, it is more prevalent in adult dogs and those that are still growing. Regular deworming and proper hygiene practices are essential in preventing and controlling the spread of this parasite in dogs.

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  • 43. 

    What is the scientific name of the roundworm that is not zoonotic?

    Correct Answer
    Toxascaris leonina
    Explanation
    Toxascaris leonina is the scientific name of a roundworm that is not zoonotic. This means that it does not have the ability to be transmitted from animals to humans. Zoonotic diseases are those that can be passed between animals and humans, but in the case of Toxascaris leonina, it only infects animals and does not pose a risk to human health.

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  • 44. 

    What parasite does this ova belong to?

    • A.

      Toxocara canis

    • B.

      Toxocara cati

    • C.

      Toxascaris leonina

    Correct Answer
    C. Toxascaris leonina
    Explanation
    The correct answer is Toxascaris leonina. Toxascaris leonina is a common parasite that infects dogs and cats. It is a roundworm that can cause various health issues in infected animals. By identifying the ova, it can be determined that the parasite belongs to Toxascaris leonina.

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  • 45. 

    What is scientific name for the roundworm that effects raccoons?

    Correct Answer
    Baylisascaris procyonis
    Explanation
    Baylisascaris procyonis is the scientific name for the roundworm that affects raccoons. This roundworm is commonly found in the intestines of raccoons and can also infect other animals and humans. It is a parasitic worm that can cause serious health issues in its hosts, including neurological damage and even death. Therefore, it is important to take precautions when dealing with raccoon feces or areas where raccoons are commonly found to prevent the transmission of Baylisascaris procyonis to humans or other animals.

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  • 46. 

    What is the common name for Baylisascaris procyonis?

    Correct Answer
    Raccoon roundworm
    Explanation
    Baylisascaris procyonis is commonly known as raccoon roundworm. This parasitic roundworm is found in the small intestine of raccoons and can cause serious infections in other animals, including humans. The eggs of the roundworm are shed in the raccoon's feces and can contaminate soil, water, and other surfaces. If ingested, the eggs can hatch and the larvae can migrate to various organs in the body, causing damage and potentially fatal infections. Therefore, the common name for Baylisascaris procyonis is raccoon roundworm.

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  • 47. 

    Baylisascaris procyonis will affect raccoons, dogs, man, woodchucks, rabbits, chickens, etc, and is not host specific.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Baylisascaris procyonis is a parasitic roundworm that can infect various animals including raccoons, dogs, humans, woodchucks, rabbits, chickens, and more. This means that the parasite is not specific to a particular host species and can affect a wide range of animals. Therefore, the statement that Baylisascaris procyonis is not host specific is true.

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