PRACTICE QUESTIONS

1. The main hormone secreted by the dominant follicle that allows the follicle to maintain its dominant state is:

a. Estrogen

b. Inhibin

c. Oocyte-inhibiting factor

d.

2. The factor that is most important in deciding whether a luteal-phase dominant follicle will go on to ovulation is:

a. Inadequate pituitary stimulation

b. Regression of the CL

c. Atresia of the follicle

3. The initiation of the preovulatory LH surge that leads to ovulation in spontaneous ovulators results from:

a. Estrogen

b. Inhibin

c. Progesterone

d. FSH

e. Prolactin

4. The substance responsible for the regression of the CL in large domestic animals is:

a. Estrogen

b. Inhibin

c. Oxytocin

d. Prolactin

e∙ PGF_2n

5. Ovarian follicle patterns in animals that are induced ovulators—that is, those that require copulation for the induction of ovulation—are as follows:

a. Ovarian follicle waves greatly overlap

b. Ovarian follicle waves slightly overlap

c. Ovarian follicle waves are distinctly separated

d. All the above