Muscles of the Knee

Question 1

Name the Origin, Insertion, Action, and Nerve for:

Rectus Femoris

Answer 1

O: AIIS and Acetabular Roof

I: Tibial Tuberosity via Patellar Tendon

A: Flex hip, Ext knee

N: Femoral N

Question 2

Name the Origin, Insertion, Action, and Nerve for:

Vastus Medialis

Answer 2

O: Linea aspera (med lip)

I: Tibial Tuberosity via Patellar ligament

A: Ext knee

N: Femoral N

Question 3

Name the Origin, Insertion, Action, and Nerve for:

Vastus Lateralis

Answer 3

O: Linea aspera (lat lip)

I: Tibial tuberosity via patellar ligament

A: Ext knee

N: Femoral N

Question 4

Name the Origin, Insertion, Action, and Nerve for:

Vastus Intermedius

Answer 4

O: Ant femur

I: Tibial tuberosity via Patellar ligament

A: Ext knee

N: Femoral N

Question 5

Name the Origin, Insertion, Action, and Nerve for:

Biceps Femoris (Long head)

Answer 5

O: Ischial Tuberosity (sacrotuberous lig.)

I: Head of Fibula

A: Ext hip, Flex Knee, ER tibia

N: Tibial N

Question 6

Name the Origin, Insertion, Action, and Nerve for:

Biceps Femoris (Short head)

Answer 6

O: Linea aspera

I: Head of Fibula

A: Flex Knee, ER tibia

N: Common Fibular N

Question 7

Name the Origin, Insertion, Action, and Nerve for:

Semimembranosus

Answer 7

O: Ischial Tuberosity

I: Med Tibial Condyle

A: Ext hip, Flex Knee, IR tibia

N: Tibial N

Question 8

Name the Origin, Insertion, Action, and Nerve for:

Semitendinosus

Answer 8

O: Ischial Tuberosity (sacrotuberous lig)

I: Med to Tibial Tuberosity via Pes Anserinus

A: Ext Hip, Flex Knee, IR tibia

N: Tibial N

Question 9

Name the Origin, Insertion, Action, and Nerve for:

Poplitius

Answer 9

O: Lat Femoral Condyle

I: Posterior Tibial surface

A: Flex Knee, IR tibia, ER femur

N: Tibial N