Lecture 28: Pelvis and Perineum I Flashcards
what is the pelvis comprised of
the dorsal, ventral and lateral walls of the pelvic cavity
what is the perineum
caudal wall of pelvic cavity
what bones is the boney pelvis made of
2 coxal bones, sacrum and 3-7 caudal vertebrae
what makes up the pelvic girdle
2 coxal bones
what bones make up the coxal bone
ilium + pubis + ischium
what is the acetabulum?
where the ilium, ischium and pubis come together
where femoral head inserts
bone of the rump
sacral tuber
bone of the hip
coxal tuber
bone of buttock
ischial tuber
what joint is at the acetabulum
coxofemoral joint
what 4 joints can be found in the boney pelvis
sacro-iliac joint
pelvic symphysis
acetabulum
intervertebral joints (bw sacral and caudal vertebrae)
what is the most lateral layer of the pelvic wall, medial to the gluteal muscles, in large animals
sacrotuberous ligament
cavity that articulates w/ the femur head
acetabulum
term for muscles of the pelvic roof
sacrocaudalis ventralis
term for the muscles of the lateral walls (pelvic diaphragm)
levator ani
coccygeus
muscles of pelvic floor (ungulates)
obturator internus
what is the origin of the sacrocaudalis ventralis
the lateral and medial aspect of the ventral surface of the sacrum
what is the insertion point for the sacrocaudalis ventralis
traversal processes and the ventral surfaces of caudal vertebrae
what is the innervation for the sacrocaudalis ventralis
caudal spinal nerves
what is the action of the sacrocaudalis ventralis
flexion and lateral movements of the tail
what is the long depressor of the tail, what is the short depressor?
sacrocaudalis lateralis (long)
sacrocaudalis medialis (Short0
what is the origin of the coccygeus
medial surface of sacrotuberois ligament near the spine of ischium
what is the insertion point for the coccygeus
the caudal vertebrae (1-4) and tail fascia
what is the innervation for the coccygeus
caudal crectal nerve
