ORG ANA: MOINA and TTR Flashcards
MOINA of piriformis
front of lateral mass of sacrum
greater trochanter of femur
sacral plexus
lateral rotator of femur at the hip joint
MOINA of obturator internus
obturator membrane and adjoining part of hip bone
greater trochanter of femur
nerve to obturator internus
lateral rotator of femur at the hip joint
MOINA of levator ani
body of pubis, fascia of obturator internus and spine of ischium
perineal and anococcygeal body, wall of prostate, vagina, rectum and anal canal
4th sacral nerve and pudendal nerve
support pelvic viscera; sphincter to anorectal and vagina
MOINA of coccygeus
spine of ischium
lower end of sacrum and coccyx
4th-5th sacral nerve
assists levator ani to support pelvic viscera; flex coccyx
MOINA of bulbospongiosus
perineal body
fascia of vestibular bulb
perineal branch of pudendal
sphincter of vagina and assists erection of clitoris
MOINA of ischiocavernosus
ischial tuberosity
fascia covering corpus cavernosum
perineal branch of pudendal
assists in erection of clitoris
MOINA of sphincter urethrae
pubic arch
surrounds urethra
perineal branch of pudendal
voluntary sphincter of urethra
MOINA of superficial transverse perineal muscle
ischial tuberosity
perineal body
perineal branch of pudendal
fixes perineal body
MOINA of deep transverse perineal muscle
ischial ramus
perineal body
perineal branch of pudendal
fixes perineal body
identify if upper or lower half of anal canal
columnar epithelium
upper half
identify if upper or lower half of anal canal
stratified squamous
lower half
identify if upper or lower half of anal canal
has anal columns jointed together at lower ends by anal valves
upper half
identify if upper or lower half of anal canal
no anal columns
lower half
identify if upper or lower half of anal canal
autonomic hypogastric plexus - stretch
upper
identify if upper or lower half of anal canal
somatic inferior rectal - pain, touch, temp and pressure
lower
identify if upper or lower half of anal canal
superior rectal artery
upper
identify if upper or lower half of anal canal
inferior rectal artery
lower
identify if upper or lower half of anal canal
drains to pararectal nodes then inferior rectal nodes
upper
identify if upper or lower half of anal canal
medial group of superficial inguinal nodes
lower
MOINA OF subcutaneous part of external anal sphincter
encircles anal canal - no bones
no insertion
inferior rectal nerve and perineal branch of S4
w puborectalis forms voluntary sphincter of anal canal
MOINA OF superficial part of external anal sphincter
perineal body
coccyx
inferior rectal nerve and perineal branch of S4
w puborectalis forms voluntary sphincter of anal canal
MOINA of deep part of external anal sphincter
encircles anal canal - no bone
no insertion
inferior rectal nerve and perineal branch of S4
w puborectalis forms voluntary sphincter of anal canal
MOINA of puborectalis
pubic bone
slings around anorectal junction
perineal branch of S4 and perineal branch of pudendal
w external anal sphincter forms voluntary anal sphincter
identify if upper or lower half of anal canal
comes from entoderm
upper
identify if upper or lower half of anal canal
ectoderm
lower
