Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy Exam IV > Perineum > Flashcards

Perineum Flashcards

1
Q

Boundaries of perineum

A

coccyx
IT
pubis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

THe anal canal is divided into upper and lower halves by what?

A

pectinate line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Upper half of anal canal

A

derived from hindgut endoderm
lined by columnar epithelium
contains anal columnes
innervated by autonomics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Arteries of upper anal canal

A 
superior rectal (off IMA)
middle rectal (off internal iliac)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

vein of upper anal canal

A

superior rectal (drains into IMV)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

lymphatics of upper anal canal

A

travel superiorly to inferior mesenteric nodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

lower half of anal canal

A

dervied from extoderm of proctoderm
lined by stratifed squamous epithelium
somatic innervation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

arteries of lower anal canal

A

inferior rectal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

vein of lower anal canal

A

inferior rectal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

lymphatics of lower anal canal

A

travel inferiorly to superficial inguinal nodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Internal anal sphnicter

A

smooth muscle
thickening of inner circular muscular at proximal end
involuntary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

external anal sphicter

A

skeletal muscle
coluntary
innervated by inferior rectal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ischiorectal fossa

A

fat filled spaces lateral to anal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

boundaries of ischiorectal fossa

A 
skin
levator ani
obturator internus
sacrotuberous and sacrospinus ligaments
deep transverse perineal muscles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

contests of ischiorectal fossa

A

fat and connective tissue

pudendal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

pudendal canal

A

fascial canal on lateral wall of fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

contents of pudendal canal

A

pudendal nerve
internal pudenal a
internal pudenal v

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

pudendal n

A

exits pelvis via greater sciatic formane

enters perineum via lesser sciatic formation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

branches of pudendal nerve

A

inferior rectal
dorsal nerve of penis of clitoris
perineal nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

branches of internal pudenal a

A

inferior rectal

branches of penis or labia and clitoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Superficial fascia (fatty layer) of urogenital triangle

A

continues with ischorectal fat

inabdomen called camper’s fascia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

superficial fascia (fatty layer) of urogenital triangle in males

A

diminished fat in scrotum and penis

replaced by dartos muscle in skin of scrotum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

superficial fascia (fatty layer) of urogenital triangle in females

A

makes up substances of fat in mons pubis and lavia majora

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

superficial fascia (membranous layer) (colles) of urogenital triangle

A

in abdomin called scarpa’s fascia

forms tuular sheath around penis and clitoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
superficial fascia (membranous layer) (colles) of urogenital triangle in males
attached to dartos muscle in scrotum
26
deep fascia of urogenital triangle
envelops muscles of peritnum fused to suspensory ligament of penis or clitoris in adbomen continous with fascia of external abdominal olbique and rectus sheath continous with deep penile fascia (buck's fasa)
27
male superficial perineal pouch
potential space between membranous/.colles fascia and perineal membrane
28
male deep perineal pouch
space between superior fascia of urogintal diagphram and perineal membrane (inferior fascia of UG diagphram) easily ruptured
29
Contents of scrotum
testes epididymis spermatic cord
30
Membranous fascia (colles) attaches to and contains ______
dartos muscle
31
dartos muscle
elevates testes a little (mostly by cremaster) wrinkles/expands skin of scrotum changes surface area innervated by genital branch of genitofemoral
32
in males tunic albuginea surrounds ____ and _____
corpora caverosa | corpus spongiosum
33
Function of deep penile fascia
binds eretile bodies togheter
34
root of penis
attached part of penis, located in superfical perineal puch `
35
erectile tissue in males
bulb | right and left crura
36
bulb
corpus spongioum | attached to perineal membrane
37
right and left crura
corpus cavernosum | attaches to ischiopubic rami
38
proximal spongy urethra
opens at extended urethra
39
Muscles that cover bulb and crura
bulbospongiosus muscles | ischiocavernosus muscles
40
bulbospongiosus muscles in males
paired muscles attached via median tendinous raphe cover bulb of penis compress bulb when contracted
41
What does bulbospongiosus aid with by compressing bulb
empty spongy urethra of residual urine/semen | erection
42
ischiocavernosus muscles in males
paired muscles | cover right and left crura
43
how does ischiocavernosus muscles help with erection
compression of crura and retarding venous return
44
superficial transverse perineal muscles
arise from IT insert into perineal body fix the perineal body
45
perineal
small fibrous mass inc enter of perineum
46
What attaches at perineal
external anal sphincter bulbospongiosus transverse perineal muscles
47
Membranous urethra
smallest/narrowest part
48
external sphincter urethrae
muscle surround membranous urethra voluntary innervated by perineal branch of pudendal n
49
bulborectal glands
ducts extend into superficial perineal pouch to enter spongy urethra produce a few drops that cleanse urethra and provide lubricating fluids for sexual activity
50
deep transverse perineal muscle
posterior to sphicter urethrae | extends from ischial rami to perineal body
51
dorsal nerve of penis
from pudendal n | supplies skin of penis and glands penis
52
branches internal pudendal a to the penis
deep a of penis | helicine branches
53
helicine branches
open into cavernous spaces | coiled in flaccid penis
54
What is inside labia
fat, smooth muscle and terminal part of round ligament
55
What does the labia minor form
prepuse and frenulum
56
vestibule
space between labia minora
57
What does the vestibule contain
external meati of urethra vagina ducts of greater and lesser vestibular glands
58
Root of clitoris
attached portion in superficial perineal pouch
59
masses of erectile tissue in root of clitoris
bulb of vestibule
60
2 parts of bulb of vestivule
surrounding vaginal orifice | urethral orifice
61
Body of clitoris
proximal detached portion of clitoris | corpora cavernosa
62
bulbospongiosus muscles in female
cover bulb of vestibule | compress deep dorsal vein of clit
63
ischiocavernosus muscles in females
cover clitoris | assist in erection of clitoris
64
greater vesticular glands
open into vestibule, posterolateral to vaginal opening | secreting lubricating mucus during sexual acitvity
65
lesser vestibular glands
corresponds to prostate open into vestibule, lateral to urethral orfice secrete mucus into vesticule for distribution to labia and vestibule
66
phimosis
foreskin can't fully be retracted | can cause difficulity urinating and sex
67
pudendal nerve blood
used during childbirth and vaginal sx
68
internal urethral sphincter
only in males smooth muscle at neck of bladder prevents retrograde ejaculation into bladder sympathetic
69
external urethral sphincter
striated muscle, voluntary | prevents incontinence
70
erection
parasymphatetic pelic splanic nerves (S2-S4) dilate helicine a, fill cavernous tissues w/ blood bulbospongiosus and ischiocavernosus muscles help by compressing venous plesux
71
emission
sympathetic (L1-L2) move semen to prostatic urethra peristalisis of ductus defens and seminal vesicles prostatic contraction adds prostatic fluid involves glands
72
Glands involved in emission
seminal vesicles prostate bulbourethral gland
73
Ejaculation
somatic (also autonomic) expulsion of secretions and spermatozoa effected by rythmic contractions of bulbospongious and ischiocavernosus muscles pudental (S2-4)
74
function of autonomics during ejaculation
parasympathetics contract urethral muscle | close internal urethral sphincter

Anatomy Exam IV (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions