Anatomy: Inguinal Canal and Perineum Flashcards
the inguinal canal is a __ between the superficial and deep inguinal rings
potential space
what are the boundaries of the deep inguinal ring?
caudal: inguinal ligament
cranially: Ca. border of IAO
medially: Prepubic tendon and lateral border of Rectus abdominus
t/f: the cremaster muscle is a part of the spermatic cord
F!
herniation through the abdominal wall by the superficial inguinal ring is __ while herniation through the inguinal canal is __
direct, indirect
what 2 structures only pass through the inguinal canal in the male?
spermatic cord and cremaster muscle
what structures pass though the inguinal canal in both the male and female?
- vaginal process (not in f cats)
- ext. pudendal a and v
- genitofemoral nerve
- efferent lymphatics from the superficial inguinal ln
t/f: the round ligament of the uterus in dogs and cats passes via the inguinal canal
T
t/f: inguinal hernias are more common in males
F, more common in females
__ and __ are the muscles responsible for closing the pelvic outlet
levator ani and coccygeus
levator ani originates on the __ and ___ wall of the pelvic cavity acting as a sling and it functions to __ the tail and compress the __
floor and lateral
depress, rectum
coccygeus is __ to levator ani and __. It orginates on the __ spine and __ the tail between the rear limbs
lateral, shorter/stronger, ischiatic, depresses
what is the sole nerve supply to the external anal sphincter and bilateral damage can result in fecal incontinence?
caudal rectal nerve
t/f: cats do not have perianal or circumanal glands
T
__ is where the fingers and thumbs are pressed when expressing anal sacs in the dog and cat
ischiorectal fossa
the ischiorectal fossa lies between the __ and __ and is prominent in __ while in the __ and __ it is covered by the ischiatic muscles
root of the tail and ischiatic tuber, ruminants, horse and pig
