Perineal Anatomy

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Know IDs in green and what they branch to in yellow

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21

Question 22

Answer 22

Question 23

Answer 23

Question 24

Answer 24

Question 25

Answer 25

Question 26

Answer 26

Question 27

Answer 27

Question 28

Answer 28

Question 29

Answer 29

Question 30

area contained within labia minora

Answer 30

vestibule

Question 31

structures found within vestibule

Answer 31

external urethral orifice

vaginal orifice

Question 32

boundaries of UG triangle

Answer 32

pubic symphysis, ischeal tuberosities

Question 33

innervation and function of bulbospongious

Answer 33

fx: maintain erection (F/M), ejaculation (M)
innervation: perineal n. (deep branch); S2,3,4

para-pre, symp pre/post

Question 34

innervation and function of ischeocavernosus

Answer 34

fx: maintain erection (F/M), ejaculation (M)
innervation: perineal n. (deep br.); S2,3,4

para-pre, symp pre/post

Question 35

innervation and function of superficial transverse perineus

Answer 35

fx: support perineal body
innervation: perineal n. (deep br.)

Question 36

perineal body fx

Answer 36

central stabilizing point of perineum

Question 37

bulb of vestibule fx, innervation

Answer 37

fx: erection, sensation, forms glans of clitoris
innervation: cavernous nerves (uterovaginal and vesical plexi)

para post

homologous to bulb of the penis

Question 38

crura of corpora cavernosa fx, innervation

Answer 38

fx: maintain erection, sensation
innervation: cavernous nerves (uterovaginal and vesical plexi)

parasympathetic

Question 39

body of clitoris fx, innervation

Answer 39

fx: sensation, erection
innervation: cavernous nerves (uterovaginal and vesicular plexi)

Question 40

glans of clitoris is formed by tissue of which erectile body?

Answer 40

bulb of the vestibule

Question 41

greater vestibular glands fx, homology

Answer 41

fx: secrete mucus into vestibule during sexual arousal
homology: bulbourethral glands

Question 42

perineal membrane is superior boundary of ___ pouch and inferior boundary of ___ pouch

Answer 42

superior boundary of deep pouch (below it)

inferior boundary of superficial perineal pouch (above it)

Question 43

muscles of UG diaphragm

Answer 43

sphincter urethrae

deep transverse perineus

Question 44

fx of muscle of UG diaphragm

Answer 44

sphincter urethrae: control exit of urine

deep transverse perineus: support pelvic floor, ejaculation (M)

Question 45

contents of ischioanal fossa

Answer 45

adipose, inferior rectal vessels and nerves

Question 46

pudental nerve branches

Answer 46

1. inferior rectal n.s (SA, SE)
2. perineal n.

–> superficial br –> posterior scrotal (M) or posterior labial n.s

–> deep br –> UG triangle muscles

3. dorsal n. of clitoris (F) or penis (M)

Question 47

pudental nerve origin

Answer 47

sacral plexus

S2,3,4

Question 48

course pudental n.

Answer 48

thru greater sciatic foramen –> lesser sciatic foramen –> pudental canal –> perineum

Question 49

internal pudendal a. branches

Answer 49

inferior rectal a.s

perineal a.

posterior labial a.s / posterior scrotal a.s

a. to the bulb

deep a. of clitoris / penis

dorsal a. of clitoris / penis

Question 50

internal pudendal a. origin

Answer 50

internal iliac a.

Question 51

internal pudendal v. tributary to…

Answer 51

internal iliac v.

Question 52

dartos reflex

Answer 52

temperature sensitive wrinkling of the skin, shrinking

Question 53

external spermatic fascia corresponds to which abd wall layer

Answer 53

ext. abd. oblique aponeurosis

Question 54

cremaster reflex

Answer 54

elevate testis upward for warmth and protection

can be induced by gently stroking internal thigh

Question 55

cremaster fascia corresponds to which abd wall layer

Answer 55

int. abd. oblique

Question 56

epididymus fx

Answer 56

conduct sperm from testis to vas deferens

Question 57

erectile bodies comprising body of penis

Answer 57

corpora cavernosa

corpus spongiosum

Question 58

erectile body forming glans of penis

Answer 58

corpus spongiosum

Question 59

inguinal triangle boundaries

Answer 59

lateral edge of rectus abdominis

medial half of inguinal ligament

position of inferior epigastric vessels

Question 60

superficial inguinal ring transmits … in M and … in F

Answer 60

spermatic cord (M)

round ligament (F)

Question 61

walls, floor, roof of inguinal canal

Answer 61

anterior wall: abdominal oblique aponeurosis

posterior wall: transversalis fascia

roof: internal abdominal oblique and transversus abdominus m.s
floor: inguinal ligament

Question 62

conjoint tendon is formed by aponeurosis of which two layers

Answer 62

fusion of aponeuroses of int abd oblique and transverse abdominis

Question 63

inguinal ligament forms which boundary of inguinal canal

Answer 63

floor

Question 64

deep inguinal ring is formed in which layer

Answer 64

transfersalis fascia (makes up posterior wall)

Question 65

attachments round ligament

Answer 65

gubernaculum and uterus

Question 66

landmarks of perineum

Answer 66

coccyx

ischeal tuberositis

pubic symphysis

Question 67

muscles comprising pelvic diaphragm

Answer 67

levator ani

coccygeus

Question 68

greater sciatic foramen connects which 2 regions

Answer 68

pelvic cavity to gluteal region

Question 69

lesser sciatic foramen connects which 2 regions

Answer 69

gluteal region to perineum region