Q12 Quadriceps Femoris Group

Question 1

Name the four muscles of this group

Answer 1

Rectus Femoris
Vastus Lateralis
Vastus Medialis
Vastus Intermedius
(Articularis Genu)

Question 2

Give the proximal attachment of the rectus femoris

Answer 2

Straight head - AIIS

Reflected head - rough area of the ilium, superior to the acetabulum

Question 3

Give the distal attachment of the rectus femoris

Answer 3

The upper border of the patella via the Quadriceps tendon with some anterior fibres crossing the patella to form the patella tendon which inserts into the tibial tuberosity

Question 4

Give the action of the Rectus Femoris muscle

Answer 4

Extends the knee

Flexes the hip

Question 5

Give one functional activity in which the muscle participates

Answer 5

The knee extension phase of running/ walking/sit to stand/climbing stairs