Anterior and Medial Thigh Muscles

Question 1

Psoas Major M.

Innervation:

Action:

Answer 1

Innervation: Ventral rami of L1-L3

Action:

1. Laterally flex vertebral column
2. Balance and flex trunk
3. Flex thigh when acting with iliacus

Question 2

Iliacus M.

Answer 2

Innervation: Femoral N.

Action:

1. Laterally flex vertebral column
2. Balance and flex trunk
3. Flex thigh when acting with iliacus

Question 3

Sartorius m.

Innervation:

Action:

Answer 3

Innervation: femoral nerve

Action:

1. Flex thigh
2. Flex leg
3. Abduct thigh
4. Laterally rotate the thigh

Question 4

Quadriceps femoris muscles

Innervation:

Action:

Answer 4

Innervation: Femoral nerve

Action: CHIEF EXTENSORS OF THE LEG
-Vasti extend the leg at the knee

-Rectus femoris m [extends the leg at the knee] and [flexes the thigh].

Question 5

Pectineus M

Innervation:

Action:

Answer 5

Femoral nerve (sometimes, obturator nerve will innervate.

1. Adduct thigh
2. Flex the thigh

Question 6

Adductor Longus M

Innervation:

Function:

Answer 6

Innervation: Anterior division of the obturator nerve (L2-L4)

1. Adduct thigh
2. Flex thigh

Question 7

Adductor Brevis M

Innervation:

Function:

Answer 7

Innervation: Anterior division of the obturator nerve

Function:
Adduct thigh
Flex thigh

Question 8

Gracilis M.

Innervation:

Action:

Answer 8

Innervation: Anterior division of the obturator n.

Action:

1. Adduct thigh
2. Flex leg.
3. Medially rotate the leg/

Question 9

Adductor Magnus M. special:

Answer 9

Adductor Magnus M has 2 portions:

1. Adductor Portion
2. Hamstring Portion

Question 10

Adductor Magnus M

Adductor Portion

Innervation:

Function

Answer 10

Innervation: Posterior division of the obturator N

Function: Adduct thigh, flex thigh

Question 11

Adductor Magnus M

Hamstring Portion

Innervation:

Function

Answer 11

Innervation: Tibial division of the sciatic N

Function: Adduct thigh, extend thigh