Posterior Compartment And Gluteal Region

Question 1

Innervation of gluteus maximus

Answer 1

Inferior gluteal nerve (L5, S1, S2)

Question 2

Action of gluteus maximus

Answer 2

Extends hip joint between flexed and standing positions
Assists in lateral rotation
Assists in rising from sitting position

Question 3

Attachment and insertion of gluteus maximum

Answer 3

Ilium posterior to posterior gluteal line
Dorsal surface of sacrum and coccyx
Sacrotuberous ligament

Inserts into the Iliotibial tract

Question 4

attachment and insertion of gluteus medius

Answer 4

external surface of ilium between ant and post gluteal line

lateral surface of greater trochanter of femur

Question 5

action of gluteus medius and minimus

Answer 5

adducts and anterior parts medially rotate hip joint

keep pelvis level when opposite limb is elevated

Question 6

attachment and insertion of tensor fasciae latae

Answer 6

asis and anterior part of iliac crest

iliotibial tract

Question 7

attachment and insertion of piriformis

Answer 7

2nd -4th sacral segments
superior margin of greater sciatic notch
sacrotuberous ligament

superior border of greater trochanter of femur

Question 8

innervation of piriformis

Answer 8

branches of anterior rami S1, S2

Question 9

action of piriformis, obturator internus and gemelli

Answer 9

laterally rotate extended hip joint

abduct flexed hip joint

Question 10

attachment and insertion of gemelli

Answer 10

superior: ichial spine
inferior: ischial tuberosity

medial surface of greater trochanter of femur

Question 11

innervation of gemelli

Answer 11

sup: nerve to obturator internus (L5, S1)
inf: nerve to quadratus femoris (L5, S1)

Question 12

attachment and insertion of quadratus femoris

Answer 12

lateral border of ischial tuberosity

quadrate tubercle on intertrochanteric crest on femur

Question 13

innervation of quadratus femoris

Answer 13

nerve to quadratus femoris (L5, S1)

Question 14

action of quadratus femoris

Answer 14

laterally rotates hip joint

Question 15

what are the deep gluteal muscles?

Answer 15

piriformis, obturator internus, quadratus femoris and gemelli

Question 16

actions of the deep gluteal muscles

Answer 16

laterally rotate hip joint

stabilise hip joint

Question 17

what are the superficial gluteal muscles?

Answer 17

gluteus maximus, medius, minimus and tensor fascia latae

Question 18

what are the hamstring muscles

Answer 18

semitendinosus, semimembranosus and biceps femoris

Question 19

attachments and insertion of semitendinosus

Answer 19

ischial tuberosity

medial surface of superior part of tibia

Question 20

attachments and insertion of semimembranosus

Answer 20

ischial tuberosity

posterior part of medial condyle of tibia

Question 21

innervation of semitendinosus and semimembranosus

Answer 21

tibial division of sciatic nerve (L5, S1, S2)

Question 22

actions of semimembranosus and semitendinosus

Answer 22

extend hip joint
flex knee joint
medially rotate leg

Question 23

attachments and insertion of biceps femoris

Answer 23

long head: ischial tuberosity
short head: linea aspera, lateral supracondylar line

lateral side of head of fibula

Question 24

innervation of biceps femoris

Answer 24

long head: tibial division of sciatic nerve

short head: common fibular division of sciatic nerve (both L5, S1, S2)

Question 25

action of biceps femoris

Answer 25

flexion and lateral rotation of knee joint | extends hip joint when starting to walk