Anterior Thigh Muscles (Quadriceps + more)

Question 1

Rectus Femoris

Origin

Insertion

(N.B: part of Quadriceps)

Answer 1

Origin:

• AIIS

Insertion:

• Tibial tuberosity

Question 2

Rectus Femoris

Action

Innervation

(N.B: part of Quadriceps)

Answer 2

Action:

• Extends knee
• Flexes hip (due to origin)

Innervation:

• Femoral n. (L2-4)

Question 3

Vastus Medialis

Origin

Insertion

(N.B: part of Quadriceps)

Answer 3

Origin:

• Med. linea aspera

Insertion:

• Tibial tuberosity

Question 4

Vastus Medialis

Action

Innervation

(N.B: part of Quadriceps)

Answer 4

Action:

• Extends knee

Innervation:

• Femoral n. (L2-4)

Question 5

Vastus Lateralis

Origin

Insertion

(N.B: part of Quadriceps)

Answer 5

Origin:

• Lat. linea aspera

Insertion:

• Tibial tuberosity

Question 6

Vastus Lateralis

Action

Innervation

(N.B: part of Quadriceps)

Answer 6

Action:

• Extends knee

Innervation:

• Femoral n. (L2-4)

Question 7

Vastus Intermedius

Origin

Insertion

(N.B: part of Quadriceps)

Answer 7

Origin:

• Front of femoral shaft

Insertion:

• Tibial tuberosity

Question 8

Vastus Intermedius

Action

Innervation

(N.B: part of Quadriceps)

Answer 8

Action:

• Extends knee

Innervation:

• Femoral n. (L2-4)

Question 9

Sartorius

Origin

Insertion

Answer 9

Origin:

• ASIS

Insertion:

• Med. tibia

Question 10

Sartorius

Action

Innervation

Answer 10

Action:

• Flexes/ lat. rotates/ abducts hip
• Flexes knee

Innervation:

• Femoral n. (L2-4)

Question 11

Pectineus

Origin

Insertion

Answer 11

Origin:

• Pecten of pubis

Insertion:

• Spiral line

Question 12

Pectineus

Action

Innervation

Answer 12

Action:

• Adduction
• Flexes/ med. rotates hip

Innervation:

• Femoral n. (L2-4)

Question 13

Blood Supply

of ALL:

• Quadriceps
• Sartoris
• Pectineus

Answer 13

FEMORAL ARTERY