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Sectional Anatomy > The Male Pelvis > Flashcards

The Male Pelvis Flashcards

1
Q

scrotum contains

A

sac-like structure containing testes, epididymis, part of ductus (vas) deferens

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2
Q

what externally divides scrotum

A

median ridge (raphe, septum) separates into lateral compartments

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3
Q

dartos muscle (what, forms)

A

thin muscular layer which lies below the skin of the scrotum
merges centrally to form the internal scrotal septum (2 sacs each containing a testis)

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4
Q

cremaster muscle (location, arises, function)

A

surrounds each testes
arises from internal oblique muscles of abdomen
lifts/lowers testes from body

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5
Q

testes function

A

produce sperm/male sex hormones

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6
Q

when do the testes descend into the scrotum

A

after the 7th month of pregnancy

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7
Q

approximate size of testes

A

length: 5cm
width: 3cm
height: 3cm

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8
Q

tunica albuginea

A

dense outer capsule adhering to both testes
extension project inward (septa)\divides testes into lobules
septa converge posteriorly at the mediastinum

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9
Q

tunica vaginalis

A

thin outer layer
serous sac derived from the peritoneum
visceral covers testes, parietal lines the scrotum

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10
Q

how many lobules in each testis and what do they contain

A

200-400 lobules
contain seminiferous tubules

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11
Q

seminiferous tubules (how many per lobe, function, location)

A

1-3 convoluted tubules per lobe
zone of sperm production
converge towards the mediastinum and empty into the straight tubule towards the rete testis

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12
Q

straight tubule

A

connects the seminiferous tubules to the rete testis

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13
Q

mediastinum testes (what, continous with, function, encloses)

A

wedge of connective tissue on post aspect of testes
continuous with tunica albuginea/interlobar septa
structural support for entering and exiting testicular vessels and ducts
encloses the rete testis

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14
Q

rete tesis

A

network of ducts in post aspect of testis
ducts located within mediastinum testis (inlet: straight tubules, outlet: efferent duct)

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15
Q

efferent duct

A

ducts exiting the rete testis and connecting to the ductus epidiymis

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16
Q

pathway of sperm production through the testis

A

lobules
seminiferous tubules
straight tubules
rete testis
efferent ductules
epidymis
vas deferens and onward

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17
Q

epididymis

A

single tightly coiled duct (6m long/1mm diameter)
located on posterolateral surface of testis
storage and maturation of sperm
continuous with ductus deferens

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18
Q

3 parts of epididymis

A

head
body
tail

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19
Q

head of epididymis

A

AKA globus major
largest portion
superior to testis
formed by the efferent ducts

20
Q

body of epididymis

A

located along the posterolateral aspect of the testis
ductus epididymis along the length of body to tail

21
Q

tail of epididymis (AKA, location, function)

A

ALA globus minor
empties into the ductus deferens within the spermatic cord at inferior border of testis

22
Q

ductus deferens AKA

A

vas deferens

23
Q

what is the ductus deferens and how it travels

A

tube from the tail of the epididymis to the ejaculatory duct ascends in spermatic cord through the inguinal canal, enters the pelvis, joins ejaculatory duct near base of bladder

24
Q

spermatic cord

A

tough covering extending from each testis to the pelvis
provides protection
encases: vas deferens, arteries/veins, lymph/nerves

25
Q

seminal vesicles (what, function)

A

paired accessory glands
secretions provide energy for sperm

26
Q

SV ducts join vas deferens to form the _____

A

ejaculatory duct

27
Q

location of seminal vesicles:
______ aspect of bladder
______ to vas deferens
______ to prostate gland
______ to rectum

A

posterior inferior
lateral
superior
anterior

28
Q

ejaculatory duct (extensions of, function, travel)

A

extensions of seminal vesicles
direct SV secretions to the prostatic urethra
ducts travel obliquely in post aspect of the prostate

29
Q

prostate (made of, shape, size)

A

fibromuscular and glandular tissue
conical shape
3.5x4.0x2.5 cm

30
Q

_______ travels centrally through prostate

A

proximal urethra

31
Q

ejaculatory ducts descend _____ through the prostate gland to open into the ______

A

inferiorly
prostatic urethra

32
Q

glandular portion of prostate divided into __ zones

A

3

33
Q

zones of the prostate

A

peripheral
central
transitional

34
Q

peripheral zone of the prostate (size, location, bound by, site of)

A

largest
post/lateral to distal prostatic urethra
bound by a surgical capsule
common site of prostate cancers

35
Q

central zone of prostate (extends, surrounds, between)

A

extends from base to verumontanum
surrounds ejaculatory ducts
between peripheral and transitional zones

36
Q

transitional zone of prostate gland (size, location)

A

usually smallest zone (bigger if benign enlargement)
located on the lateral aspects of proximal urethra

37
Q

orientation of prostate gland (base/apex)

A

base: sup portion, adjacent to neck of bladder
apex: inferior, in contact with peliv diaphragm

38
Q

prostate location:
____ to bladder
____ to pelvic diaphragm
____ to rectum
____ to symphysis pubis

A

midline and inferior
superior
anterior
posterior

39
Q

3 parts of penis

A

corpora cavernosa (2): dorsilateral, becomes enlarged when filled with blood
corpus spongiosum (1): mid-ventral, encircles spongy urethra

40
Q

testicular arteries arise from aorta below ______

A

renal arteries

41
Q

testicular veins drain into ____

A

right into IVC
left into LRV

42
Q

pudendal arteries supply blood to _____ and ______ and are branches of the _____

A

penis
urethra
internal iliac arteries

43
Q

pudendal venous plexus is the _____ of the penis

A

main venous drainage

44
Q

potential spaces in male pelvis

A

posterior cul-de-sac
space of Retzius

45
Q

posterior cul-de-sac (male pelvis) (AKA, between)

A

AKA retrovesicular pouch/pouch of Douglas
between bladder and rectum

46
Q

space of Retzius (male pelvis) (between)

A

between symphysis and bladder

Sectional Anatomy (16 decks)

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