W2 - Knee Extension Muscles

Question 1

Name the four muscles that produce knee extension

Answer 1

Rectus femoris
Vastus intermedius
Vastus medialis
Vastus lateralis

Question 2

Name the proximal distal attachment sites for the rectus femoris muscle for knee extension

Answer 2

Proximal
Long head: AIIS
short head: ilium, just superior to the acetabulum

Distal
Quadriceps femoris tendon

Question 3

Name the nerve that supplies the rectus femoris muscle for knee extension

Answer 3

Femoral nerve. L2-L4.

Question 4

Name the proximal in distal attachment sites for the vastus intermedius muscle for knee extension

Answer 4

Proximal
Femur : upper 2/3 of an anterior and lateral surface

Distal
Quadriceps femoris tendon, lateral margin of patella, and lateral tibia condyle

Question 5

Name the nerve that supplies the vastus intermedius muscle for knee extension

Answer 5

Femoral nerve. L2-L4.

Question 6

Name the proximal and distal attachments for the vastus medialis muscle for knee extension

Answer 6

Proximal
Femur: medial part of intertrochanteric line, Pectineal line, media clip of linear aspera, media supercondylar line

Distal
Quadriceps femoris tendon and medial border of patella

Question 7

What nerve supplies the vastus medialis muscle for knee extension?

Answer 7

Femoral nerve L2-L4

Question 8

Name the proximal and distal attachment sites for the vastus lateralis muscle for knee extension

Answer 8

Proximal
Femur : lateral part of intertrochanteric line, margin of greater trochanter, lateral margin of gluteal tuberosity and lateral lip of linear aspera

Distal
Quadriceps femoris tendon and lateral margin of patella

Question 9

What nerve supplies the vastus lateralis muscle from the extension?

Answer 9

Femoral nerve L2-L4