Physiology of Human Sexual Response Flashcards Preview

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Flashcards in Physiology of Human Sexual Response Deck (23):
1

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

ok

2

The two main physiologic responses during sex in both genders:

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.

3

Is there variety in the time and extent of responses?

Yes

4

Four stages of sexual response

Excitement
Plateau
Orgasm
Resolution

5

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

Refractory Period

6

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

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

7

Erection is mainly a ---------- reflex

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

8

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

25-30 fold

9

Erection center located in what region of the spinal cord

Sacral region....KNOW

10

What nerve controls vasodilation of arteries?

Pelvic nerve

11

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

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

12

Weird dude proved that erection is what

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

13

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

ok

14

What is priaprism

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

15

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

A MEDICAL EMERGENCY

16

2 parts of ejaculation

Emission then ejaculation

17

Ejaculation is coordinated in which part of the spinal cord

Lumbar

18

Emission is what?

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

19

KNOW the Erection, Ejaculation diagram

ok

20

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

ok

21

vagina during excitement phase

increase in lubrication

22

Vagina expands and uterus moves upwards

ok...expands upwards

23

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

ok