MSS Week 11 (Flexion of the Knee (L5 - S2)

Question 1

Semitendinosus

Origin
Insertion
Innervation
Action

Answer 1

Semitendinosus

Origin: ischial tuberosity
Insertion: Medial surface of the proximal tibia
Innervation: Tibial Nerve
Action: Hip Extension and Knee Flexion

Question 2

Semimembranosus

Origin
Insertion
Innervation
Action

Answer 2

Semimembranosus

Origin: Ischial Tuberosity
Insertion: Medial Tibial Condyle
Innervation: Tibial Nerve
Action: Hip Extension and Knee Flexion

Question 3

Biceps Femoris

Long Head

Origin
Insertion
Innervation
Action

Short Head

Origin
Insertion
Innervation
Action

Answer 3

Biceps Femoris

Long Head

Origin: Ischial Tuberosity
Insertion: Head of the Fibula
Innervation: Tibial Nerve
Action: Hip Extension or Knee Flexion

Short Head

Origin: Linea aspera on posterior surface of the femur
Insertion: Head of the Fibula
Innervation: Common Fibular Nerve
Action: Hip Extension or Knee Flexion