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Reproductive > Physiology of Sexual Response: Nutting > Flashcards

Physiology of Sexual Response: Nutting Flashcards

1
Q

The default sexual brain is what sex?

A

Female

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2
Q

Where is the sexual CNS center?

A

Preoptic center of hypothalamus

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3
Q

What are the neonatal influence on sex behavior?

A

Androgens=male tnedency

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4
Q

A lesion in what CNS region makes no sex behavior regardless of hormones given?

A

Preoptic hypothalamic center in rats

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5
Q

What is more important in humans than lower species?

A

Learned behavior is greater than hormonal control

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6
Q

What is a surrogate?

A

Prostitute

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7
Q

What is auto manipulation?

A

Masturbation

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8
Q

KEY SLIDE: What are the two main physiological responses in both genders?

A

Myotonia: increased muscle tension
Vasocongestion: increased blood flow

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9
Q

What are the four stages of sexual response?

A

Excitement (Arousal)—Focus on sex
Plateau
Orgasm
Resolution

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10
Q

What is the refractory period?

A

Man cannot achieve orgasm or erection

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11
Q

What is different about female refractory period?

A

It is shorter: multiple orgasm

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12
Q

What is the secretion in the excitement stage of male arousal? Where from and why?

A

Cowper’s glands

Neutralizes pH of male urethra

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13
Q

What happens to testes in early phase?

A

Testes drawn up by cremaster
Protect from getting smushed
Happens before orgasm

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14
Q

What ANS is responsible for erection?

A

Parasympathetic= POINT

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15
Q

What ANS is responsible for ejeculation?

A

Sympathetic=SHOOT

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16
Q

What are the nerves allowing for ANS stimulation of erectin?

A

S2/S4
Outflow of pelvis PNS: increases NOS activity: increased NO: increased cGMP: smooth muscle relaxation: vasodilation: increased blood flow and congestion

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17
Q

How much does blood flow increase in erection?

A

25-30 fold

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18
Q

What stage of sleep do erection occur?

A

REM sleep

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19
Q

What is the effect of tactile stimulation of the penis?

A 
Goes back to spinal cord
PNS loop activated
Some SNS constriction
Arterioles dilate
Erection
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20
Q

How does viagra work?

A

inhibit phosphodiesterase to increase cGMP levels

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21
Q

Is there a correlation between length of flaccid penis and erect penis length?

A

No

22
Q

Which is more important to erection: vasodilation or venous constriction?

A

Vasodilation! PNS

23
Q

Where is the erection center located in spinal cord?

A

S2-S4

24
Q

What muscles engorge with blood in erection?

A

Ischiocavernosus

Bulbospongiosis

25
Q

What is priapism?

A

Erection for more than 4 hours.

26
Q

Who was priapus?

A

Greek god of fertility who had a large and prominent erection

27
Q

Orgasm has what two phases?

A

Emission: semen enters erethra
Ejaculation: contraction of urethral smooth muscle

28
Q

What contracts in emission?

A 
Rhythmic contraction of:
epidydimis
vas deferens
seminal vesicles
prostate
29
Q

What contraction in ejaculation?

A 
Via pudendal nerves:
Bulbocavernosus
Ischiocavernosis
Perineal
Urethra
Urethral Sphincters: prevent back flow
30
Q

What is retrograde ejaculation prevented by?

A

Urethral sphincters: internal and external

31
Q

Erection is controlled by what spinal segments? Ejaculation is coordinated in what spinal segments?

A

Erection: S2=S4
Ejaculation: L1-L2

32
Q

Erection=

Ejaculation=

A

Erection=sacral

Ejaculation=lumbar

33
Q

How fast do rhythmic contractions occur?

A

0.8 second

34
Q

Are ANS pathways of ejaculation understood fully?

A

No… we have an idea but not fully

35
Q

What is more attractive to a woman, uncircumcised or circumcised flaccid penis?

A

Circumcised!

36
Q

What three things happen in sex to the female breast?

A

Nipple erection
Swelling of breasts
Sex flush

37
Q

What happens in female excitement phase?

A

Vaginal lubrication: not from glands

38
Q

Where is the lubriaction of vagina in female excitement phase from?

A

Increased blood flow

Transudate across vagina

39
Q

What increases vaginal lubrication?

A

ESTROGEN: gels for old ladies

40
Q

What happens to vaginal size in arousal?

A

Wider
Deeper
NARROWING entrance

41
Q

What is not DIRECTLY stimulated for female orgasm?

A

Clitoris… women would rather drag labia and mons over it than touch it directly

42
Q

What contracts in female orgasm?

A

Vagina
Uterus
Rectal sphincter

43
Q

What does the cervix do in resolution phase of female?

A

Contractions continue, but are weak and infrequent

Cervix dips into pool of semen at end of vagina

44
Q

Semen loss is more in what group of women?

A

Women who have had children

Nulliparous women have less loss

45
Q

When are all sperm dead?

A

10 hours after
8 hours 6%
4-6 50%

46
Q

How long do sperm take to get to fallopian tube?

A

5 minutes

47
Q

What is the problem with uterine contractions?

A

Most activities seem to push semen away from the egg at the top of the oviduct… huh

Uterine
Oviduct
Ciliary

48
Q

What happens to BP/HR in orgasm?

A

EVERYTHING GOES UP

Increased HR
Increased Systolic
Increased Diastolic
Increased MAP

49
Q

What is released hormonally in orgasm?

A

Oxytocin… people ar trying to make oxytocin sprays to increase couples bonding

50
Q

What other physiological effects occur in sexual response?

A

Increaesd:
respiration: may hold breath in orgasm
Sweating: after orgasm

51
Q

What are the idiosyncrasies of physiology in high sexual excitement?

A

Decreased bleeding from cuts… more blood to genitals?

Relief from allergies

Increased coordination in spasticity patients

Decreased sensation of PAIN at orgasm

Less gag reflex

52
Q

What helps calms nerves before public speaking?

A

Sex… keep in mind when public speaking is in the future

-Dr. Nutting

Reproductive (31 decks)

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