Repro 5

Question 1

What secondary sex characteristics are influenced by estrogen?

Answer 1

breast development and pattern of fat distribution to hips and upper thighs

Question 2

What secondary sex characteristics are influenced by androgen?

Answer 2

pubic and armpit hair, libido

Question 3

vasocongestion

Answer 3

erection in both sexes when arterial blood flow into spongy erectile tissue exceeds venous outflow

Question 4

4 phases of the human sex act ;)

Answer 4

• excitement
• plateau
• orgasm/climax
• resolution

Question 5

erection reflex

Answer 5

a key element to successful sexual intercourse is the ability of the male to achieve and sustain an erection

Question 6

Explain the erection reflex

Answer 6

1. tactile/erotic stimuli
2. ACh released and bind to muscarinic ACh receptors on endothelial cells
3. endothelial cells produce nitric oxide (NO)
   - NO enter smooth muscle cell and causes relaxation of vascular smooth muscle
   - engorgement compresses veins

Question 7

emission

Answer 7

movement of sperm out of vas deferent and into urethra where it is joined by secretions to make semen

Question 8

ejaculation

Answer 8

expulsion of semen (~3ml) by a series of rapid muscular contractions accompanied by sensations of pleasure

Question 9

sildenafil, PDE5

Answer 9

inhibitors for erectile dysfunction

Question 10

flibanserin

Answer 10

helps restore prefrontal cortex control over brain’s motivation/reward pathway that enables sexual desire

Question 11

bremelanotide

Answer 11

a synthetic hormone that acts in the hypothalamus where it targets melanocortin receptor, believed to be involved in up-regulating a woman’s sexual response

Question 12

3 categories of contraceptive practice

Answer 12

abstinence, sterilization, interventional methods

Question 13

sterilization

Answer 13

tubal ligation in females, vasectomy in males (most effective contraceptive method)