Ch 9 Hormones

Question 1

Hormones Generally, are administered to animals for one of two reasons

Answer 1

1. To correct a deficiency of that hormone
2. To obtain a desired effect (e.g., to postpone uterus)

Question 2

Endogenous hormones

Answer 2

Hormones that are produced naturally in the body

Question 3

Exogenous hormones

Answer 3

Hormones that are administered to an animal

Question 4

Pituitary Gland (2)

Answer 4

1. Master gland of endocrine system
2. Located at base of brain

Question 5

Two hormones of the posterior pituitary

Answer 5

Vasopressin (ADH)
Oxytocin

Question 6

Neurohormonal reflex:

Answer 6

Applies to release of oxytocin by posterior pituitary

Question 7

Positive feedback

Answer 7

Low plasma levels of a hormone are sensed by the hypothalamus, and release of appropriate release factor increases

Question 8

Negative feedback

Answer 8

High plasma levels of a hormone are sensed by the hypothalamus, which then reduces the amount of appropriate releasing factor

Question 9

Stages of the Reproductive System

Answer 9

Proestrus
◦ Estrus
◦ Diestrus
◦ Anestrus

Question 10

FSH causes growth and

Answer 10

maturation of a follicle

Question 11

LH release causes ovulation of the mature follicle; formation of

Answer 11

corpus luteum