Physiology of Human Sexual Response

Question 1

In humans, learning appears to be much more important than in other species where sex is driven almost completely by hormonal exposure

Answer 1

ok

Question 2

The two main physiologic responses during sex in both genders:

Answer 2

1) Myotonia: which is increased muscle tension, it is sometimes rhythmic, oftentimes both agonist and antagonist muscles contract.
2) Vasocongestion- increased blood flow, primarily by increased influx of blood.

Question 3

Is there variety in the time and extent of responses?

Answer 3

Yes

Question 4

Four stages of sexual response

Answer 4

Excitement
Plateau
Orgasm
Resolution

Question 5

Time before you can achieve another erection (enter the excitement phase) is called

Answer 5

Refractory Period

Question 6

Powerful orgasm in a woman= pretty steep (fast) resolution phase

Answer 6

Milder orgasms = a resolution phase of lesser slope and therefore may be aroused more easily for another orgasm

Question 7

Erection is mainly a ———- reflex

Answer 7

PARASYMPATHETIC…..duh. (not a flight or fight response)

Question 8

Blood flow to the penis during an erection increases how much?

Answer 8

25-30 fold

Question 9

Erection center located in what region of the spinal cord

Answer 9

Sacral region….KNOW

Question 10

What nerve controls vasodilation of arteries?

Answer 10

Pelvic nerve

Question 11

Increased Nitric oxide activity also plays a role in achieving an erection

Answer 11

Inc NO synthase-> Inc NO locally –> Inc Guanylate Cyclase –> Inc cGMP –> smooth muscle relaxation –> vasodilation –> Inc blood flow

This is what viagra does. It increase nitric oxide synthase, which increases NO locally, which increases guanylate cyclase, which increases cGMP –> Which relaxes smooth muscle and causes vasodilation. Viagra maintais cGMP

Question 12

Weird dude proved that erection is what

Answer 12

Mainly vasodilation of the arterioles from relaxation of arteriolar smooth muscle by injecting an alpha blocker into his own penis onstage.

Question 13

Plateau phase consists of calpers gland secretions, some penile engorgement and movement of testis towards the abdomen

Answer 13

ok

Question 14

What is priaprism

Answer 14

a potentially painful medical condition in which the erect penis or clitoris does not return to its flacid state

Question 15

Penile erections for more than 6 hours can be classified as priaprism

Answer 15

A MEDICAL EMERGENCY

Question 16

2 parts of ejaculation

Answer 16

Emission then ejaculation

Question 17

Ejaculation is coordinated in which part of the spinal cord

Answer 17

Lumbar

Question 18

Emission is what?

Answer 18

Rhythmic contractions of smooth muscle, particularly the epididymis, vas deferens, seminal vesicles and prostate INTO the prostatic urethra

Question 19

KNOW the Erection, Ejaculation diagram

Answer 19

ok

Question 20

Nipple erection occurs in women during arousal but it is harder to see because the mammary glands increase in size as well.

Answer 20

ok

Question 21

vagina during excitement phase

Answer 21

increase in lubrication

Question 22

Vagina expands and uterus moves upwards

Answer 22

ok…expands upwards

Question 23

During the resolution phase in women, the clitoris dips into the pool of semen that is sitting at the end of the vagina

Answer 23

ok