Pelvis 4

Question 1

perineum

Answer 1

-region inferior to the pelvic diaphragm and is associated with the external genitalia and the anus
-divided into urogenital triangle and anal triangle

Question 2

urogenital triangle

Answer 2

-anterior half of perineum
-bound by ischiopubic rami, pubic symphysis, and line drawn through ischial tuberosities

Question 3

perineal membrane

Answer 3

-layer of tough fascia perforated by the urethra and vagina
-membrane separates deep and superficial perineal pouches

Question 4

deep perineal pouch

Answer 4

-potential space between deep fascia of peliv diaphragm and perineal membrane
-contains part of urethra, external urethral sphincter, vagina, bulbourethral gland, and deep transverse perineal muscle

Question 5

superficial perineal pouch

Answer 5

-potential space between perineal membrane (superior) and superficial perineal fascia (inferiorly) and ischiocavernosus, bulbospongiosus, and superficial transverse perineal muscles and erectile tissues that contribute to penis and clit

Question 6

greater vestibular glands

Answer 6

located in superficial perineal pouch

Question 7

superficial pouch bound posteriorly to

Answer 7

perineal body

Question 8

perineal body

Answer 8

fibromuscular mass that acts as a point of attachment for muscle fibers from pelvic floor and the perineum

Question 9

labia majora and labia minora frame…

Answer 9

..frames the vestibules that contains external urethral orifice, vaginal opening, ischiocavernosus, bulbospongiosus, and superficial transverse

Question 10

clitoris located

Answer 10

under clitoral prepuce and consists of body and glans

Question 11

proximal clit formation

Answer 11

bilateral corpora cavernosa and commissure of bulbs

Question 12

distal clit formation

Answer 12

commissure of bulbs from the glans

Question 13

posterior formation of the clit

Answer 13

corpora cavernosa expand to form the crura of clit and commissure of bulbs form vestibular bulbs

Question 14

scrotum

Answer 14

-outpouching of the anterior abdominal wall
-contain superficial fascia and dartos muscles

Question 15

dartos muscle

Answer 15

scrunches pepe

Question 16

penis constists of

Answer 16

-shaft and glans penis which is covered by the prepus (foreskin)
-paired corpora cavernosa and unpaired corpus spongiosum erectile tissue

Question 17

cospora cavernosa

Answer 17

seperate proimally inot left and right crura

Question 18

corpus spongiosum

Answer 18

-proximally into the bulb of penis and distally into glans of penis
-surrounds spongy urethra

Question 19

erection maintained by

Answer 19

ischiocavernosus and bulbospongiosus

Question 20

bulbospongiosus

Answer 20

compresses bulb of penis to expel urine and ejaculate

Question 21

urogenital triangle supplied by

Answer 21

internal pudendal ateries of the internal iliac arteries

Question 22

internal pudendal arteries give rise to

Answer 22

perineal arteries of the scrotum and labia and deep dorsal arteries of the penis and clit

Question 23

urogenital triangle drained by

Answer 23

internal and external pudendal veins of the internal iliac veins

Question 24

penis and clit drained by

Answer 24

deep dorsal vein

Question 25

somatic innervation of urogenital triangle

Answer 25

through pudendal nerves S2-S4 that divide into superficial branches and deep branches that continue as the dorsal nerves of penis/clit

Question 26

autonomic sympathetic fibers of urogenital triangle control

Answer 26

emission

Question 27

parasympathetic fibers of urogenital triangle control

Answer 27

control erection via pelvic splanchnic nerves

Question 28

anal triangle

Answer 28

-posterior half of perinuem
-bound by sacrotuberous ligaments, coccyx, and line drawn through ischial tuberosities

Question 29

anal canal makes up

Answer 29

-distal 2” on gastrointestinal tract
-continuous with the rectum at the anorectal junction

Question 30

upper anal canal contains

Answer 30

-anal columns which are connected inferiorly via anal valves

Question 31

internal anal sphincter

Answer 31

-involuntary
-surrounds upper canal
-lie medial to external anal sphincter
-contributes to formation of perineal body

Question 32

fat filled ischio-anal fossae

Answer 32

flank the anal canal

Question 33

pectinate line

Answer 33

-divides the upper 2/3 and lower 1/3 of the anal canal
-important autonomic landmark
-where vasculature and nerves differ based on if above or below the line

Question 34

upper anal canal

Answer 34

supplied by superior rectal arteries of inferior mesenteric and drained by superior rectal vein into inferior mesenteric vein of HPS

Question 35

lower anal canal

Answer 35

supplied by inferior rectal arteries from internal pudendal arteries and drained by inferior rectal veins and inferior vena cava

Question 36

upper anal canal innervated by

Answer 36

autonomic fibers through the rectal plexus which is continuous with the inferior hypogastric plexus

Question 37

lower anal canal innervated by

Answer 37

somatic fibers from the inferior rectal nerves of the pudendal nerves