KIN 100 - Posteriori Thigh and Popliteal Fossa (lecture 21)

Question 1

Semitendionosus

Answer 1

Proximal attachment: Ischial tuberosity

Distal attachment: Medial tibia (pes anserinus)

Innervation: Tibial part of sciatic

Actions:
- Hip extension
- Knee flexion

Question 1

What are the muscles of the posterior thigh

Answer 1

1. Semitendinosus
2. Semimembranosus
3. Biceps femoris

Question 2

Semimembranosus

Answer 2

Hamstring, deep to semitend.

Proximal attachment: Ischial tuberosity

Distal attachment: Posterior aspect of medial tibial condyle

Innervation: Tibial part of sciatic nerve

Actions:
- Hip extension
- Knee flexion

Question 3

Biceps femoris

Answer 3

Proximal attachment:
- Long head: Ischial tuberosity
- Short head: Linea aspera

Distal attachment: Head of fibula

Innervation:
- Long head: tibial part of sciatic nerve
- Short head: common fibular part of sciatic nerve

Actions:
- Hip extension (long head only)
- Knee flexion

Question 4

Where is the popliteal fossa located

Answer 4

a diamond shaped space at the posterior aspect of the knee joint

Question 5

What muscles is the popliteal fossa bounded by

Answer 5

• Biceps femoris (superolaterally)
• Semimembranosus and semitendinosus (superomedially)
• Lateral head of gastrocnemius (inferolaterally)
• Medial head of gastrocnemius (inferomedially)

Question 6

What are the contents of the popliteal fossa

Answer 6

• Popliteal artery
• Popliteal vein
• Small saphenous vein
• Tibial nerve
• common fibular nerve