knee flexion

Question 1

What muscles perform knee flexion?

Answer 1

biceps femoris
semimembranosus 
semitendonosus
sartorius
popliteus

Question 2

Origin of biceps femoris.

Answer 2

long head - ischial tuberosity

short head - lower linea aspera and lateral condyloid ridge of the femur.

Question 3

Insertion of biceps femoris.

Answer 3

head of fibula

lateral condyle of tiba

Question 4

function of biceps femoris.

Answer 4

flex the knee
extend hip
lateral rotation of hip

Question 5

Origin of semimembranosus

Answer 5

ischial tuberosity

Question 6

Insertion of semimembranosus

Answer 6

posterior surface of the medial condyle of the tibia

Question 7

function of semimembranosus

Answer 7

flex the knee
extend the hip
internal rotation of the hip and knee

Question 8

Origin of semitendinosus

Answer 8

ischial tuberosity

Question 9

insertion of semitendinosus

Answer 9

Upper anterior medial condyle of the tibia

Question 10

function of semitendinosus

Answer 10

flex the knee
extend the knee
internal rotation of hip and knee

Question 11

Origin of sartorius

Answer 11

Anterior superior iliac spine

Question 12

insertion of sartorius

Answer 12

medial surface of the tibia, near tibial tuberosity

Question 13

function of sartorius

Answer 13

hip and knee flexion

assist in lateral rotation of the hip

Question 14

Origin of popliteus

Answer 14

The posterior surface of the lateral condyle of the femur

Question 15

insertion of popliteus

Answer 15

upper posterior medial surface of tibia

Question 16

function of popliteus

Answer 16

knee flexion

assists in medial rotation

Question 17

origin of gastrocnemius

Answer 17

medial and lateral epicondyles of the femur

Question 18

insertion of gastrocnemius

Answer 18

the posterior surface of the calcaneus via the Achilles tendon

Question 19

function of gastrocnemius

Answer 19

strong plantar flexor of ankle

weak knee flexion