gross 2 Pelvis

Question 0

insertion of the Coccygeus

Answer 0

coccyx and lower part of the sacrum

Question 1

origin of the coccygeus muscle

Answer 1

ischial spine
and
sacrospinous ligament

Question 2

nerve of the coccygeus

Answer 2

ventral primary rami of 3rd and 4th sacral nerves

Question 3

function of the coccygeus

Answer 3

supports pelvic viscera

draws coccyx forward

Question 4

origin of levator Ani muscle

Answer 4

body of pubis
arcus tendineus
ischial spine

Question 5

insertion of Levator Ani muscle

Answer 5

coccyx and anococcygeal raphe

Question 6

nerve of levator Ani muscle

Answer 6

ventral primary rami of 3rd and 4th sacral nerves

perineal branch of pudendal nerve

Question 7

function of levator Ani muscle

Answer 7

• as a whole, supports pelvic viscera

- specialized parts of the levator ani perform other functions

Question 8

what are the three parts to the Levator Ani muscle?

Answer 8

iliococcygeus
pubococcygeus
puborectalis

Question 9

what is the most posterior part of the levator ani?

Answer 9

iliococcygeus

Question 10

the pubococcygeus is the main part of the levator ani and its most medial fibers form what two things?

Answer 10

Levator Prostatae: inserts into prostate in the male

Pubovaginalis: inserts into urethra and vagina in female

Question 11

what is the part of the levator ani formed when fibers from each side unite behind the anorectal junction to form the puborectal sling?

Answer 11

Puborectalis

Question 12

what is the function of the puborectalis?

Answer 12

maintain the flexure at the anorectal junction, it relaxes during defecation. the things i could also say…
but seriously it also functions to direct the fetal head forward during birth

Question 13

what is the curved thickening of the obturator fascia which gives origin to parts of the pubococcygeus and iliococcygeus

Answer 13

Arcus Tendineus

Question 14

what is the continuation of smooth muscle layer of the rectum below the pelvic diaphragm

Answer 14

Sphincter Ani internus:

under involuntary control

Question 15

The sphincter Ani externus surrounds the anal canal and consists of what three parts?

Answer 15

Subcutaneous
superficial
deep

Question 16

origin of the superficial transverse perineus muscle

Answer 16

ischial tuberosity

Question 17

insertion of superficial transverse perineus muscle

Answer 17

central tendon of the perineum

Question 18

nerve of superficial transverse perineus muscle

Answer 18

perineal branch of pudendal nerve

Question 19

function of superficial transverse perineus muscle

Answer 19

stabilizes the central tendon of the perineum

Question 20

origin of the ischiocavernosus

Answer 20

medial surface of ischial tuberosity and ischiopubic ramus

Question 21

insertion of ischiocavernosus

Answer 21

crus of the penis or clitoris

Question 22

nerve of ischiocavernosus muscle

Answer 22

perineal branch of pudendal nerve

Question 23

function of ischiocavernosus muscle

Answer 23

impedes venous return, by compressing the crus of the penis or clitoris, thereby maintaining erection

Question 24

origin of bulbospongiosus muscle

Answer 24

central tendon of the perineum

median raphe of the bulb of the penis

Question 25

insertion of the bulbospongiosus

Answer 25

corpus spongiosum

deep fascia on dorsum of penis

Question 26

nerve of Bulbospongiosus muscle

Answer 26

perineal branch of pudendal nerve

Question 27

function of bulbospongiosus

Answer 27

impedes venous return by compressing the buld of the penis, thereby maintaining erection.
It also constricts the Corpus Spongiosum to empty the urethra at the end of micturition and ejaculation

Question 28

origin of Bulbospongiosus in female

Answer 28

central tendon of the perineum

Fibers surround the bulb of the vestibule and vagina

Question 29

insertion of bulbospongiosus in female

Answer 29

pubic arch and corpus cavernosum of clitoris

Question 30

nerve of the bulbospongiosus in females

Answer 30

perineal branch of the pudendal

SAME

Question 31

function of the Bulbospongiosus in female

Answer 31

constricts the vaginal orifice and maintains erection of the clitoris

Question 32

origin of deep transverse perineus muscle

Answer 32

medial surface of ischial ramus

Question 33

insertion of deep transverse perineus muscle

Answer 33

central tendon of the perineum and median raphe (males)

walls of the vagina (female)

Question 34

nerve of the deep transverse perineus muscle

Answer 34

perineal branch of the pudendal

Question 35

function of deep transverse perineus muscle

Answer 35

stabilizes the central tendon of the perineum and supports the prostate gland or vagina

Question 36

origin of sphincter Urethrae muscle

Answer 36

inferior pubic ramus

fibers encircle urethra

Question 37

insertion of sphincter Urethrae muscle

Answer 37

median Raphe

walls of vagina

Question 38

nerve of sphincter Urethrae Muscle

Answer 38

perineal branch of pudendal

Question 39

function of sphincter Urethrae muscle

Answer 39

compresses urethra at the end of micturition