VetTechPrep: ANIMAL CARE AND NURSING, Exam Bank
Questions With Explained Answers
Which of the following is the intermediate host of Dipylidium caninum and is important
in its transmission?
- Taenia saginata
- Otodectes cynotis
- Ctenocephalides felis
- Ixodes pacificus - * Ctenocephalides felis
( Dipylidium caninum is the common canine tapeworm. The flea (Ctenocephalides felis)
is the intermediate host. The parasite is usually acquired by dogs when they groom and
ingest fleas carrying the tapeworm cysticercoid. This is important because the diagnosis
of tapeworm in a dog may also be a sign that flea control is needed. )
The parathyroid gland is responsible for which of the following?
- Releasing catecholamines
- Making insulin
- Maintaining blood calcium level
- Causing milk letdown - * Maintaining blood calcium level
( The parathyroid gland is responsible for regulating and maintaining blood calcium
levels. The four parathyroid glands are located on or near the thyroid gland. When
parathyroid hormone is released into the blood, it circulates to act in a number of places
to increase the amount of calcium in the blood (i.e. removing calcium from bones). When
the calcium level in the blood is too high, the cells of the parathyroids make less
parathyroid hormone (or stop making it altogether), thereby allowing calcium levels to
decrease.
Catecholamines (epinephrine and norepinephrine) are released by the adrenal medulla.
Insulin is made by the pancreas. Milk letdown and uterine contraction are stimulated by
oxytocin, which is released by the pituitary gland. )