Human Sexual Response

Question 1

role of hormones in sex behavior

Answer 1

enhance it, do not cause it

Question 2

females given androgens during gestation show…

Answer 2

decreased female behavior and increased male behavior

Question 3

the “sex center” is located …

Answer 3

in the preoptic area of anterior hypothalamus

Question 4

what is the result of lesions in the PON of the anterior hypothal (in terms of sex behavior)

Answer 4

will no longer exhibit sex behavior no matter what hormones you give the individual
**not yet shown in humans

Question 5

what are the 2 main physiologic response in both men and women during sex?

Answer 5

myotonia (↑ tension, rhythmic contractions, rigidity)

vasocongestion (↑blood flow 2’ to vasorelaxation)

Question 6

What are the 4 stages of sexual response

Answer 6

excitement/arousal, plateau, orgasm, resolution

Question 7

what changes in the stages of sexual response occur in men as they age?

Answer 7

excitement phase gets longer

Question 8

erection starts int the ___ phase and is maintained during the __ phase

Answer 8

excitation

plateau and orgasmic

Question 9

erection is controlled by (sympathetics or parasympathetic) system

Answer 9

para

Question 10

erection is caused by

Answer 10

increased blood blow:

1. pelvic N carries parasymp impulses and causes vasodilation of arterioles
2. ↑NOS activity → ↑NO/cGMP → vasodilatation

AND decreased venous drainage

Question 11

the neuronal pathways that regulate erections are found in the

Answer 11

sacral spinal cors (S2-S4)

Question 12

What part of the brain is involved in erection

Answer 12

lymbic system of cerebral cortex

Question 13

What changes to the penis occur during plateau phase

Answer 13

cowers gland secretion
color deepens
testes increase in size and are elevated toward the abdomen

Question 14

condition in which the penis or clitoris does not return to its flaccid state

Answer 14

priapism

Question 15

ejaculation is coordinated by

Answer 15

lumbar spinal cord (L1-L2)

Question 16

N that controls ejaculation

Answer 16

pudental

Question 17

caused by rhythmic contractions of smooth muscle of the epidiymis, vas deferens, seminal vesicles and prostate

Answer 17

emission

Question 18

accompanies the feeling of orgasm

Answer 18

ejaculation

Question 19

retrograde ejaculaiton is prevented by

Answer 19

contraction of urethral (internal and external) sphincters

Question 20

emission vs ejacultion

Answer 20

emission puts semen in the urethra and ejaculation shoots it out! pow! pow!

Question 21

what changes occur to the breasts during sex?

Answer 21

nipple becomes erect and boobies get bigger

Question 22

into what phase will the nipples stay erect/

Answer 22

thru plateau

Question 23

changes to the vagina during excitement phasw

Answer 23

increased lubrication, expansion of vag (inc length and width), uterus elevates

Question 24

changes to the vagina during plateau phase

Answer 24

vasocongestion causes narrowing of the vagina

“tenting effect” to help sperm get into uterus

Question 25

changes going on during female orgasm

Answer 25

uterine contractions and rectal sphincter contraction

Question 26

what is going on during the resolution phase in females

Answer 26

uterine contractions continue but with less force and at a lower frequency

Question 27

differences in vagina during sex of a nulliparous and a parous woman

Answer 27

nulliparous can get semen pooling and this does not happen in parous (they have wastage of semen)

Question 28

will retain semen in the vagina in a parous woman

Answer 28

orgasmic platform

Question 29

what is the “problem” seen with sperm transport in the female reproductive tract

Answer 29

uterine contractions, oviduct contractions, and ciliary movement all push the semen out

Question 30

most of the sperm are dead within ____ of being in the female

Answer 30

10 hrs