Action of Lower Limb Muscles

Question 1

Anterior Compartment of Thigh

Answer 1

Common Action: All extend knee joint

Question 2

Rectus Femoris

Answer 2

Helps flex the thigh

Question 3

Sartorius

Answer 3

Flexes, aBducts, and laterally rotates the thigh. Also assists in flexing leg

Question 4

Pectineus

Answer 4

ADducts, flexes and medially rotates the thigh

Question 5

Iliopsoas

Answer 5

Major flexor of thigh

Question 6

Adductor Longus

Answer 6

Adducts and weakly flexes thigh

Question 7

Adductor Brevis

Answer 7

Adducts thigh

Question 8

Adductor Magnus (adductor part)

Answer 8

Adducts and weakly flexes thigh

Question 9

Adductor Magnus (hamstring part)

Answer 9

Adducts and weakly EXTENDS thigh.

Question 10

Gracilis

Answer 10

Adducts thigh, flexes leg

Question 11

Obturator Externus

Answer 11

Laterally rotates thigh

Question 12

Gluteus Maximus Muscle

Answer 12

Extends flexed thigh, assist in lateral rotation and abducts thigh, stabilized hip joint

Question 13

Gluteus Medius

Answer 13

Abducts and medially rotates thigh at hips, steadies pelvis on leg when opposite leg is raised, abducts femur, prevents pelvic tilt during opposite swing phase

Question 14

Piriformis Muscle

Answer 14

Laterally rotates and extends thigh, abducts flexed thigh at hip,

Question 15

Obturator interus

Answer 15

Laterally rotates extended thigh, abducts flexed thigh at hip

Question 16

Superior Gemellus

Answer 16

Laterally rotates extended thigh at the hip

Question 17

Inferior gemellus

Answer 17

Laterally rotates extended thigh at hip

Question 18

Quadratus Femoris

Answer 18

Laterally rotates hip at thigh

Question 19

Gluteus Minimus

Answer 19

Abducts and medially rotates thigh at hip; steadies pelvis on leg when opposite leg is raised, abducts femur, prevents pelvic told turing opposite swing phase.

Question 20

Tensor Fascia Latae

Answer 20

Abducts, medially rotates, and flexes thigh at hip; helps to keep knee extended, tenses fascia lat and counteracts backward pull of gluteal maximus. Helps maintain the coal bone level when standing on one foot. Stabilizes knee extension

Question 21

Iliopsoas Muscle

Answer 21

Flexes thigh at hips and stabilizes hip joint, acts with posts major

Question 22

Pectineus Muscle

Answer 22

Adducts and flexes thigh at hip

Question 23

Sartorius

Answer 23

Abducts, laterally rotates, and flexes thigh, flexes knee joint

Question 24

Quadriceps Femoris

Answer 24

Laterally rotates thigh at hip

Question 25

Rectus Femoris

Answer 25

Extends leg at knee joint and flexes thigh at hip joint

Question 26

Vastus Lateralis

Answer 26

Extends leg at knee joint

Question 27

Vastus Medialis

Answer 27

Extends leg at knee joint

Question 28

Vastus Intermedius

Answer 28

Extends leg at knee joint

Question 29

Gracilis

Answer 29

Adducts thigh, flexes and medially rotates leg

Question 30

Adductor Brevis

Answer 30

Adducts thigh at hip, weak hip flexor

Question 31

Adductor Magnus

Answer 31

adductor part: adducts and flexes thigh; hamstring part: extends thigh

Question 32

Adductor Longus

Answer 32

Adducts thigh at hip

Question 33

Biceps Femoris

Answer 33

Flexes leg, extends thigh, rotates leg laterally when knee is flexed.

Question 34

Semitendinosus

Answer 34

Flexes leg, extends thigh, rotates leg medially when knee is flexed

Question 35

Semimambranosus

Answer 35

Flexes leg, extends thigh, rotates leg medially when knee is flexed

Question 36

hamstring part of adductor magnus

Answer 36

adducts and extends thigh.