Muscles acting on knee

Question 1

sartorius origin

Answer 1

ASIS

Question 2

sartorius insertion

Answer 2

pes anserine:

proximal medial surface of tibia

Question 3

sartorius action

Answer 3

hip flexion,
hip abduction,
hip ER, 
knee flexion,
knee IR

Question 4

sartorius innervation

Answer 4

femoral nerve

Question 5

rectus femoris origin

Answer 5

AIIS

Question 6

rectus femoris insertion

Answer 6

patella via quad tendon;

tibial tuberosity via patellar tendon

Question 7

rectus femoris action

Answer 7

knee extension,

hip flexion

Question 8

rectus femoris innervation

Answer 8

femoral nerve

Question 9

vastus intermedius origin

Answer 9

anterior and lateral surfaces of femur

intertrochanteric line

Question 10

vastus intermedius insertion

Answer 10

patella via quad tendon;

tibial tuberosity via patellar tendon

Question 11

vastus intermedius action

Answer 11

knee extension

Question 12

vastus intermedius innervation

Answer 12

femoral nerve

Question 13

vastus medialis origin

Answer 13

anterior and lateral surfaces of femur (intertrochanteric line)

Question 14

vastus medialis insertion

Answer 14

patella via quad tendon;

tibial tuberosity via patellar tendon

Question 15

vastus medialis action

Answer 15

knee extension

Question 16

vastus medialis innervation

Answer 16

femoral nerve

Question 17

vastus lateralis origin

Answer 17

greater trochanter,

intertrochanteric line

Question 18

vastus lateralis insertion

Answer 18

patella via quad tendon;

tibial tuberosity via patellar tendon

Question 19

vastus lateralis action

Answer 19

knee extension

Question 20

vastus lateralis innervation

Answer 20

femoral nerve

Question 21

biceps femoris long head origin

Answer 21

ischial tuberosity

Question 22

biceps femoris long head insertion

Answer 22

fibular head

Question 23

biceps femoris long head action

Answer 23

hip extension,
knee flexion,
hip and ER of flexed knee;
posterior pelvic tilt

Question 24

biceps femoris long head innervation

Answer 24

tibial nerve (sciatic)

Question 25

biceps femoris short head origin

Answer 25

linea aspera

Question 26

biceps femoris short head insertion

Answer 26

fibular head

Question 27

biceps femoris short head action

Answer 27

knee flexion, | ER of flexed knee

Question 28

biceps femoris short head innervation

Answer 28

common fibular (sciatic)

Question 29

semimembranosus origin

Answer 29

ischial tuberosity

Question 30

semimembranosus insertion

Answer 30

posterior surface of medial tibial condyle

Question 31

semimembranosus action

Answer 31

knee flexion, hip extension, hip and iR of flexed knee, posterior pelvic tilt

Question 32

semimembranosus innervation

Answer 32

tibial (sciatic)

Question 33

semitendinsosus origin

Answer 33

ischial tuberosity

Question 34

semitendinsosus insertion

Answer 34

pes anserine: | medial surface of the proximal tibia

Question 35

semitendinsosus action

Answer 35

knee flexion, hip extension, hip and knee IR, posterior pelvic tilt

Question 36

semitendinsosus innervation

Answer 36

tibial (sciatic)

Question 37

popliteus origin

Answer 37

lateral condyle of femur

Question 38

popliteus insertion

Answer 38

proximal, posterior tibia

Question 39

popliteus action

Answer 39

weak knee flexor, | IR of tibia (unlocks knee)

Question 40

popliteus innervation

Answer 40

tibial

Question 41

gastrocnemius origin

Answer 41

medial and lateral femoral condyles

Question 42

gastrocnemius insertion

Answer 42

calcaneus via Calcaneal (Achilles) tendon

Question 43

gastrocnemius action

Answer 43

knee flexion, | ankle plantarflexion

Question 44

gastrocnemius innervation

Answer 44

tibial

Question 45

plantaris origin

Answer 45

lateral supracondylar line of femur

Question 46

plantaris insertion

Answer 46

calcaneus via Calcaneal (Achilles) tendon

Question 47

plantaris action

Answer 47

weak ankle plantarflexion, | weakly assists in knee flexion

Question 48

plantaris innervation

Answer 48

tibial