GA1 - Perineum Flashcards
anatomically, the perineum is defined as the ___ ___ of the pelvic cavity
entire outlet
perineum is separated from main pelvic cavity by the ___ ___
pelvic diaphragm
pelvic diaphragm is formed by 2 things
levator ani
coccygeus
perineum is a diamond shaped space bounded anteriorly by: ___ ___
symphysis pubis
perineum is a diamond shaped space bounded anteriolaterally by: ___ ___ ___
inferior pubic rami
perineum is a diamond shaped space bounded laterally by: ___ ___
ischial tuberosities
perineum is a diamond shaped space bounded posteriorlaterally by: ___ ___; ___ border of gluteus maximus
sacrotuberous ligaments
inferior
perineum is a diamond shaped space bounded posteriorly by: ___ ___ ___
tip of coccyx
anterior triangle of the diamond shaped space of the perineum is the ___ side
urogenital
posterior triangle of the diamond shaped space of the perinium is the ____ triangle
anal
2 parts of the perineum
anal
urogenital
anal canal is ___in long
1.5
anal canal has 3 things
pectinate line
anal valves
anal columns
upper part of the anal canal is from the ____
endoderm
upper part of the anal canal is ___ ___ epithelium
simple columnar
lower part of the anal canal is from the ___
ectoderm
lower part of the anal canal is ___ ___ epithelium
stratified squamous
3 cutaneous nerves of the perineum
inferior rectal nerve
perineal branch of S4
anococcygeal nerves
2 portions of the external anal sphincter
superficial and deep
external anal sphincter supplied by ___ fibers from the ___ nerve
GSE
pudendal
ischioanal fossa contains ___ ___
ischioanal fossa
ischioanal fossa is a wedge shaped space between the ___ and __ __
gmax
pelvic diaphragm
ischioanal fossa is filled with ____ tissue that contains the ___ nerve accompanied by __ ___ artery and vein
fibrofatty
pudendal
inferior pudendal
anocutaneous line separates the ____ and ___ lower anus
inner
external