BIOS-311 UNIT 3 QUESTIONS AND ANSWERS
ELABORATIONS!!
Gluteus Maximus
Answers :Origin: Ilium (ala), Sacrum, Coccyx
Insertion: Iliotibial tract, Gluteal tuberosity
Innervation: Inferior gluteal nerve
Action: Extension of thigh, Lateral rotation of thigh, Abduction of thigh
Gluteus Medias
Answers :Origin: Ilium (ala)
Insertion: greater trochanter
Innervation: Superior gluteal nerve
Action: Abduction of thigh (non weight-bearing)/ Lowers pelvis on weight-bearing
side
Gluteus minimus
Answers :Origin: Ilium (ala)
Insertion: greater trochanter
Innervation: Superior gluteal nerve
Action: Abduction of thigh (non weight-bearing)/ Lowers pelvis on weight-bearing
side
Piriformis
Answers :Origin: Sacrum
Insertion: greater trochanter
Action: Lateral rotation of the thigh
, Superior gemellus
Answers :Origin: ischial spine
Insertion: greater trochanter
Action: Lateral rotation of thigh
Tendon of obturator internus
Answers :Origin: Pubis and Ischium
Insertion: greater trochanter
Action: Lateral rotation of thigh
Inferior gemellus
Answers :Origin: Ischial tuberosity
Insertion: greater trochanter
Action: Lateral rotation of thigh
Quadratus Femoris
Answers :Origin: Ischial tuberosity
Insertion: intertrochanteric crest
Action: Lateral rotation of thigh
Sartorius
Answers :Origin: anterior superior iliac spine
Insertion: Pes anserinus
Innervation: Femoral nerve
ELABORATIONS!!
Gluteus Maximus
Answers :Origin: Ilium (ala), Sacrum, Coccyx
Insertion: Iliotibial tract, Gluteal tuberosity
Innervation: Inferior gluteal nerve
Action: Extension of thigh, Lateral rotation of thigh, Abduction of thigh
Gluteus Medias
Answers :Origin: Ilium (ala)
Insertion: greater trochanter
Innervation: Superior gluteal nerve
Action: Abduction of thigh (non weight-bearing)/ Lowers pelvis on weight-bearing
side
Gluteus minimus
Answers :Origin: Ilium (ala)
Insertion: greater trochanter
Innervation: Superior gluteal nerve
Action: Abduction of thigh (non weight-bearing)/ Lowers pelvis on weight-bearing
side
Piriformis
Answers :Origin: Sacrum
Insertion: greater trochanter
Action: Lateral rotation of the thigh
, Superior gemellus
Answers :Origin: ischial spine
Insertion: greater trochanter
Action: Lateral rotation of thigh
Tendon of obturator internus
Answers :Origin: Pubis and Ischium
Insertion: greater trochanter
Action: Lateral rotation of thigh
Inferior gemellus
Answers :Origin: Ischial tuberosity
Insertion: greater trochanter
Action: Lateral rotation of thigh
Quadratus Femoris
Answers :Origin: Ischial tuberosity
Insertion: intertrochanteric crest
Action: Lateral rotation of thigh
Sartorius
Answers :Origin: anterior superior iliac spine
Insertion: Pes anserinus
Innervation: Femoral nerve