Question 1

What is the period of the cycle before sexual receptivity?&#10;A)Proestrus&#10;B)Diestrus&#10;C)Estrus&#10;D)Metestrus

Accepted Answer

Proestrus is the period before sexual receptivity in many animals, during which the endometrium thickens and ovarian follicles mature.

Question 2

Which of the following animals would be given insulin?&#10;A)An animal with diabetes mellitus&#10;B)An animal with hypoglycemia&#10;C)An animal with hyperthyroidism&#10;D)An animal with adrenocortical insufficiency

Accepted Answer

Insulin is used to treat diabetes mellitus by helping to lower blood glucose levels. Animals with diabetes mellitus have high blood sugar levels due to their body's inability to produce enough insulin or use it effectively.

Question 3

Which hormone is predominant during the follicular phase?&#10;A)Estrogen&#10;B)Testosterone&#10;C)Progesterone&#10;D)Gonadotropin-releasing

Accepted Answer

Estrogen is the predominant hormone during the follicular phase of the menstrual cycle, as it is involved in the growth and development of the follicle.

Question 4

How is medication used to treat hypoglycemia administered?&#10;A)Orally&#10;B)Rectally&#10;C)Intravenously&#10;D)Topically

Accepted Answer

Oral glucose tablets or gels are commonly used to treat mild hypoglycemia.

Question 5

What is formed in the pancreas and released in response to a rise in blood glucose?&#10;A)Methimazole&#10;B)Levothyroxine&#10;C)Thyroxine&#10;D)Insulin

Accepted Answer

Insulin is the hormone produced by the pancreas that is released when there is a rise in blood glucose levels, helping to regulate blood sugar by allowing cells to take in glucose.

Question 6

During which stage of estrus is the CL formed in the ovary, producing progesterone to maintain pregnancy?&#10;A)Proestrus&#10;B)Diestrus&#10;C)Estrus&#10;D)Metestrus

Accepted Answer

The CL, or corpus luteum, is formed in the ovary during the metestrus stage of the estrous cycle. This structure is crucial for producing progesterone, which is necessary to maintain pregnancy.

Question 7

Positive and negative feedback loops control for endocrine disease by maintaining the right balance of hormone secretion. Which of the following hormones would be released during a positive feedback loop?

A)Oxytocin
B)Glucocorticoid
C)Somatotropin
D)Lutein

Accepted Answer

Oxytocin is released during a positive feedback loop, particularly in scenarios such as childbirth, where its release promotes uterine contractions and, in turn, triggers more oxytocin to be released, enhancing the contractions further until delivery occurs. This exemplifies a positive feedback mechanism, where the initial action of oxytocin release leads to more of the same action in a self-amplifying cycle.

Question 8

What causes lysis of the CL at the end of pregnancy?&#10;A)Estrogen&#10;B)Prostaglandin&#10;C)Progesterone&#10;D)Testosterone

Accepted Answer

Prostaglandin is responsible for the lysis of the corpus luteum (CL) at the end of pregnancy, leading to a decrease in progesterone production and facilitating the onset of labor.

Question 9

If the animal is not pregnant, what stage ends?&#10;A)Proestrus&#10;B)Diestrus&#10;C)Estrus&#10;D)Metestrus

Accepted Answer

Diestrus is the stage that ends if the animal is not pregnant. This phase follows estrus and is characterized by the activity of the corpus luteum, which would regress if pregnancy does not occur, leading to the end of the diestrus phase.

Question 10

What do the ductless glands of the endocrine system secrete?&#10;A)Follicles&#10;B)Hormones&#10;C)Tissues&#10;D)Blood

Accepted Answer

The ductless glands of the endocrine system secrete hormones directly into the bloodstream, which then carry these hormones to various organs and tissues to regulate bodily functions.

Question 11

The thyroid controls all of the following except ______.&#10;A)metabolism&#10;B)growth&#10;C)elimination&#10;D)reproduction

Accepted Answer

The answer of The thyroid controls all of the following...

Question 12

Which drug would be used to treat dogs and cats with diabetes insipidus?&#10;A)Luteotropin&#10;B)Somatotropin&#10;C)Glucocorticoids&#10;D)Vasopressin

Accepted Answer

The answer of Which drug would be used to treat...

Question 13

What drug would you give a dog who has decreased coat luster or hair loss, weight gain without any increase in appetite, and is listless?&#10;A)Methimazole&#10;B)Levothyroxine&#10;C)Thyroxine&#10;D)Insulin

Accepted Answer

The answer of What drug would you give a dog...

Question 14

Which of the following is seen mainly in cats?&#10;A)Hypothyroidism&#10;B)Addison's disease&#10;C)Cushing's disease&#10;D)Hyperthyroidism

Accepted Answer

The answer of Which of the following is seen mainly...

Question 15

What is most likely going to be prescribed for a dog with Addison's disease?&#10;A)Desoxycorticosterone pivalate&#10;B)Corticotropin&#10;C)Cosyntropin&#10;D)Mitotane

Accepted Answer

The answer of What is most likely going to be...

Question 16

As an alternative to removing the thyroid surgically, what else can be used?&#10;A)Carbimazole&#10;B)Iodine isotopes&#10;C)Methimazole&#10;D)Propranolol

Accepted Answer

The answer of As an alternative to removing the thyroid...

Question 17

How is insulin administered?&#10;A)Orally&#10;B)Rectally&#10;C)Intravenously&#10;D)Topically

Accepted Answer

The answer of How is insulin administered?&#10;A)Orally&#10;B)Rectally&#10;C)Intravenously&#10;D)Topically...

Question 18

Which of the following is the master gland?&#10;A)Pancreas&#10;B)Thyroid&#10;C)Pituitary&#10;D)Hypothalamus

Accepted Answer

The answer of Which of the following is the master...

Question 19

What does the pituitary gland do?&#10;A)It inhibits hormones from reaching other endocrine glands.&#10;B)It secretes hormones that control other endocrine glands.&#10;C)It signals the brain to release hormones from the endocrine glands.&#10;D)It protects the hypothalamus from harmful parasites.

Accepted Answer

The answer of What does the pituitary gland do?&#10;A)It inhibits...

Question 20

Which of the following causes the growth and maturation of ovarian follicles?&#10;A)GnRH&#10;B)LH&#10;C)FSH&#10;D)ACTH

Accepted Answer

The answer of Which of the following causes the growth...

Question 21

Which of the following should not be handled by pregnant women as it may cause uterine contractions?&#10;A)Estrogen&#10;B)Prostaglandin&#10;C)Progesterone&#10;D)Testosterone

Accepted Answer

The answer of Which of the following should not be...

Question 22

What is implanted in the pinnae of cattle to improve the growth rate?&#10;A)Estrogen&#10;B)Prostaglandin&#10;C)Progesterone&#10;D)Testosterone

Accepted Answer

The answer of What is implanted in the pinnae of...

Question 23

Hormones are often given to livestock to increase _____.&#10;A)sexual drive&#10;B)weight&#10;C)number of embryos&#10;D)fertility age

Accepted Answer

The answer of Hormones are often given to livestock to...

Question 24

During which phase is progesterone the predominant hormone?&#10;A)Luteal&#10;B)Follicular&#10;C)Proestrus&#10;D)Estrous

Accepted Answer

The answer of During which phase is progesterone the predominant...

Question 25

What drug is approved for use in mares to suppress estrus or for synchronization of estrus?&#10;A)Finasteride&#10;B)Altrenogest&#10;C)Estriol&#10;D)Medroxyprogesterone

Accepted Answer

The answer of What drug is approved for use in...

Deck 9: Hormonal and Reproductive Drugs