Gluteal Region and Posterior Thigh Flashcards
Superficial layer of muscles of gluteus (4)
max, med, min, TFL
Deep layers of the gluteus (5)
piriformis, obturator internus, superior gemellus, inferior gemellus, quadratus femoris
Origin of glute max
posterior ilium, sacrum, coccyx, sacrotuberous ligament
Insertion of glute max
IT track and gluteal tuberosity on femur
Glute max is innervated by
inferior gluteal nerve (L5, S1, S2)
Functions of glute max
extend and laterally rotate thigh
Three gluteal bursa
trochanteric
ischial
gluteofemoral
Glute med and min origin
posterior/lateral surface of ilium
Glute med and min insertion
lateral surface of greater trochanter
Functions of glute med and min
abduct and medially rotate thigh
What does the glute med and min prevent?
pelvic drop
What nerve innervates glute med and min?
superior gluteal nerve
What nerve innervates the TFL?
superior gluteal nerve (L4, L5, S1)
Origin of piriformis?
anterior surface of sacrum
Function of piriformis?
abduct hip joint and lateral rotator of hip
Insertion of piriformis?
greater trochanter
Obturator internus, gemelli and quadratus femoris function? Insertion?
laterally rotate
intertochanteric groove
All hamstrings function
extend the thigh and flex the leg
All hamstrings are innervated by the …
tibial part of the sciatic nerve
All three hamstrings origin
ischial tuberosity
Biceps femoris origin
long head-ischial tuberosity
short head- lateral lip of the linea aspera
Biceps femoris insertion
lateral side of the head of fibula
Long head of biceps femoris is innervated by… and short head?
tibial nerve
common fibular nerve
Semitendinosus insert on … semimembranosus inserts on…
medial surface of superior part of tibia
posterior surface of medial condyle of tibia
Three arteries to the gluteal region
superior gluteal artery
inferior gluteal artery
internal pudendal artery
Arteries to the posterior thigh
femoral artery
profunda femoris artery plus the branches: medial and lateral circumflex femoral arteries
Superior gluteal nerve segment on vertebra? Inferior?
L4-S1
L5-S2