Gluteal & Posterior Thigh

Question 1

Where does gluteus maximus originate?

Answer 1

dorsal ilium, sacrum, coccyx, sacrotuberous ligament and iliac crest

Question 2

Where does gluteus maximus insert?

Answer 2

gluteal tuberosity and iliotibial tract

Question 3

Where does the gluteus minimus insert?

Answer 3

Greater trochanter of femur, anterior aspect

Question 4

Where does the gluteus medius insert?

Answer 4

greater trochanter of femur, lateral aspect

Question 5

Where does the gluteus medius originate?

Answer 5

ilium, between anterior and posterior gluteal lines

Question 6

Where does the gluteus minimus originate?

Answer 6

ilium, between anterior and inferior gluteal lines

Question 7

What innervates the gluteus medius?

Answer 7

superior gluteal N.

Question 8

What innervates gluteus maximus?

Answer 8

Inferior gluteal N.

Question 9

What innervates gluteus minimus?

Answer 9

Superior Gluteal N.

Question 10

What innervates the Tensor fascia latae muscle?

Answer 10

Superior Gluteal N.

Question 11

Where does the tensor fascia latae insert?

Answer 11

Iliotibial Tract

Question 12

What are the actions of gluteus maximus?

Answer 12

hip extension and lateral rotation of thigh

Question 13

What are the actions of gluteus medius?

Answer 13

Stabilization of the pelvis during gait, abduction of thigh, medial rotation of thigh (ant. fibers)

Question 14

Where does the tensor fascia latae originate?

Answer 14

Iliac crest, lateral aspect

Question 15

What are the actions of gluteus minimus?

Answer 15

Stabilization of the pelvis during gait, abduction of thigh, medial rotation of thigh (ant. fibers)

Question 16

What are the actions of tensor fascia latae

Answer 16

Stabilization of the knee in extension, weak hip flexion, abduction of thigh

Question 17

Where does the piriformis originate?

Answer 17

sacrum, pelvic surface

Question 18

Where does the piriformis insert?

Answer 18

greater trochanter of femur, medial apsect

Question 19

Where does the superior gemellus insert?

Answer 19

Greater trochanter, medial apsect via the obturator internus tendon

Question 20

Where does the superior gemellus originate?

Answer 20

ischium

Question 21

What innervates the piriformis?

Answer 21

N. to piriformis

Question 22

What innervates the superior gemellus?

Answer 22

N. to obturator internus

Question 23

What are the actions of the piriformis?

Answer 23

lateral rotation of thigh

Question 24

What are the actions of the superior gemellus?

Answer 24

lateral rotation of thigh

Question 25

Where does the obturator internus originate?

Answer 25

Obturator foramen and obturator membrane, internal aspect

Question 26

Where does the obturator internus insert?

Answer 26

greater trochanter of the femur, medial aspect

Question 27

What innervates the obturator internus?

Answer 27

N. to obturator internus

Question 28

What are the actions of obturator internus?

Answer 28

lateral rotation of thigh

Question 29

Where does the inferior gemellus originate?

Answer 29

ischium

Question 30

Where does the inferior gemellus insert?

Answer 30

greater trochanter, medial aspect via the obturator internus tendon

Question 31

What innervates the inferior gemellus?

Answer 31

N to quadratus femoris

Question 32

What are the actions of inferior gemellus?

Answer 32

lateral rotation of thigh

Question 33

Where does the quadratus femoris originate?

Answer 33

ischium

Question 34

Where does quadratus femoris insert?

Answer 34

quadrate tubercle of the femur

Question 35

What innervates quadratus femoris?

Answer 35

N. to quadratus femoris

Question 36

What are the actions of quadratus femoris?

Answer 36

lateral rotation

Question 37

What are the two heads of the biceps femoris?

Answer 37

long head and short head

Question 38

Where does the long head of the biceps femoris originate?

Answer 38

ischial tuberosity

Question 39

Where does the short head of the biceps femoris originate?

Answer 39

linea aspera of femur

Question 40

Where does the long head of biceps femoris insert?

Answer 40

Head of the fibula, lateral aspect

Question 41

Where does the short head of biceps femoris insert?

Answer 41

head of the fibula, lateral aspect

Question 42

What innervates the long head of biceps femoris?

Answer 42

Tibial N. (L4-S3)

Question 43

What innervates the short head of biceps femoris?

Answer 43

Common Fibular N. (L4-S2)

Question 44

What are the actions of biceps femoris?

Answer 44

flexion of knee, weak extension of hip, lateral rotation of tibia

Question 45

Where does the semitendinosus originate?

Answer 45

ischial tuberosity

Question 46

Where does the semitendinosus insert?

Answer 46

Posterior slip of pes anserinus

Question 47

What innervates the semitendinosus?

Answer 47

Tibial N. (L4-S3)

Question 48

What are the actions of semitendinosus?

Answer 48

flexion of knee, weak extension of hip, medial rotation of tibia

Question 49

Where does the semimembranosus originate?

Answer 49

ischial tuberosity

Question 50

Where does the semimembranosus insert?

Answer 50

medial aspect of tibial condyle

Question 51

What innervates the semimembranosus?

Answer 51

Tibial N. (L4-S3)

Question 52

What are the actions of the semimembranosus?

Answer 52

Flexion of knee, weak extension of hip, medial rotation of tibia

Question 53

What are the nerves that innervate the gluteal region direct branches of?

Answer 53

Lumbar (L1-S3) and Sacra (L4-S5) plexuses

Question 54

What are the nerves of the posterior compartment direct branches of?

Answer 54

Tibial (L4-S3) and common fibular (L4-S2) nerves which are components of the sciatic nerve