Gluteal

Question 1

Gluteus maximus

Answer 1

ORIGIN-posterior gluteal line and posterior region behind
outer slope of dorsal segment of iliac crest
dorsal lower sacrum
sacrotuberous ligament
aponeurosis of erector spinae
side of coccyx
INSERTION- deep fibres of lower part- gluteal tuberosity
greater part- iliotibial tract
innervation- Inferior gluteal nerve
ACTION- extends hip and abductor of thigh
lateral rotation
stabilises knee through iliotibial tract

Question 2

GLUTEUS MEDIUS

Answer 2

ORIGIN- Gluteal surface of ilium between posterior and anterior gluteal lines
INNERVATION- superior gluteal line
INSERTION- oblique ridge on lateral surface of greater trochanter
Action- Abductor of thigh
medial rotator
Maintain balance when opp. foot is above ground by preventing pelvis from tilting

Question 3

Structure beneath gluteus medius

Answer 3

1. Superior gluteal nerve
2. Deep branch of superior gluteal artery
3. gluteus minimus
4. trochanteric bursa of gluteus medius