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CABS3: Renal and GU > 1000ft view Male Reproduction > Flashcards

1000ft view Male Reproduction Flashcards

1
Q

What is bulbospongiosus

A

around lateral aspect of the bulb of the penis and proximal body
-pudendal nerve innervation, supports pelvic floor, helps to expel all semen, pushes blood from bulb into body of penis

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2
Q

what is ischiocavernosus

A

helps to maintain erection, compresses venous flow

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3
Q

what are the three sections of the root

A

crus - laterally
bulb of corpus spongiosum - centrally
corpus spongiosum

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4
Q

how is the body of the penis attached

A

via suspensory ligament

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5
Q

what surrounds the corpous spongiosum and corpus cavernosum

A

Bucks fascia

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6
Q

where are the dorsal arteries located

A

between corpora cavernosa, contains deep and superficial

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7
Q

what arteries help with erection and where are they located

A

deep arteries within corpora cavernosa

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8
Q

what is the innervation of the penis

A

branches off the pudendal nerve

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9
Q

what branch off of the pudendal nerve provides somatic innervation to the spongy urethra

A

dorsal nerve branch

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10
Q

What is the Raphe

A

line between the scrotum

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11
Q

what are the muscles of the scrotum

A

cremaster muscles
dartos muscles
scrotal septum

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12
Q

what is the vasculature of the scrotum

A

anterior scrotal arteries off the internal pudendal arteries

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13
Q

what is the innervation of the scrotum

A

anterior scrotal nerve off the ilio-inguinal nerve and genital branch of the genitofemoral nerve

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14
Q

what is included in the spermatocord

A

testicular blood vessels, connective tissue and vas deferens

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15
Q

when do the tests descend

A

3 months before birth through the inguinal canal

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16
Q

how are the tests suspended

A

spermatic cord

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17
Q

what covers the testes

A

tunica vaginalis

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18
Q

what is the inner covering of the testes

A

tunica albuginea

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19
Q

what is the needed temp for the the testes

A

2-7 degrees Celcius below body temp for spermatogenesis

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20
Q

where is sperm made within the testes

A

seminiferous tubules

21
Q

What are Leydig cells

A

stimulate sertoli cells
create testosterone when stimulated by LH
(more supportive cells) more external

22
Q

what are sertoli cells

A

stimulated by FSH which will make the androgen bonding protein
create spermatogonium (diploid cell) - more internal

23
Q

what is pampiniform plexus

A

venous vascular attachment

24
Q

what helps with the continued maturation of sperm

A

epididymis

25
Q

how long does it take for sperm to move along the epididymis

A

12 days

26
Q

in males what does the inguinal canal contain

A

spermatic cord
gonadal vessels
lymphatics

27
Q

what portion of the spermatozoa contains DNA

A

head of the spermatozoa

28
Q

what makes up the mid-piece of the spermatozoa

A

large amount of mitochondria

29
Q

what does acrosome assist with

A

break through the egg

30
Q

what is included in seminal fluid

A

fructose for sperm metabolism
prostaglandins to help with the inhospitable vaginal environment
alkalizes the fluid to protect from vagina

31
Q

how big should the prostate be

A

size of a walnut

32
Q

what regulate the function of the prostate

A

androgens

33
Q

what is the purpose of the prostate

A

alkalinizes semen further, gives milky appearance
add fibrinolysis to increase sperm motility

34
Q

what is the PSA

A

prostate-specific antigen - prostate cancer specific marker

35
Q

what are the bulbourethral glands

A

secrete mucous near base of penis

36
Q

what is the pH of semen

A

7.5

37
Q

what it the amount during a normal ejaculation

A

2-6mL

38
Q

what controls erection

A

parasympathetic NS

39
Q

what is the innervation of the corpus cavernosa

A

pelvic nerve (S2-S4)

40
Q

what is detumescence

A

flaccid penis

41
Q

what allows for flaccid penis

A

increase sympathetic input

42
Q

what controls ejactulation

A

sympathetic NS
innervation from T4-L2

43
Q

what causes constriction so there is no exchange between urine or semen

A

Norepinephrine

44
Q

what occurs after ejaculation

A

loss of parasympathetic
reduced NO
decreased compression on the veins
flaccid penile tissue (remission)

45
Q

how long are the sex organs the same embryologically

A

first 5 weeks

46
Q

Where is the SRY gene located

A

on the Y chromosome

47
Q

what causes the Mullerian ducts to regress

A

activation of SRY gene - stops development of female sex organs

48
Q

what develops with activation of SRY gene

A

Wolffian duct

49
Q
A

CABS3: Renal and GU (9 decks)

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