anatomy thigh

Question 1

Innervation of hamstring

Answer 1

Tibial division of sciatic nerve, except short head of biceps femoris(common fibular portion)

Question 2

Hamstring functions

Answer 2

• Thigh extension,except short head of biceps femoris

- leg flexion(all four)

Question 3

Function of semitendinosus

Answer 3

Extend thigh;flex leg (med. rotate)

Question 4

innervation of semitendinosus

Answer 4

tibial division of sciatic nerve

Question 5

Semimembranosus function

Answer 5

extend thigh;flex leg

Question 6

Semimembranosus innervation

Answer 6

tibial division of sciatic nerve

Question 7

Bicep Femoris

Answer 7

Long head: Flex leg; extend thigh , tibial division of sciatic nerve
Short head: only flexed leg, comon fibular branch fo the sciatic

Question 8

Function of Adductor Magnus(Hamstring portion)

Answer 8

Extend thigh

Question 9

Innervation of Adductor Magnus

Answer 9

Tibial division of sciatic nerve

Question 10

Popliteal Fossa boundaries

Answer 10

1. Superomedially-semitendinosus & semimembranosus
2. Superolaterally-Biceps femoris
3. Inferolaterally-lateral head gastrocnemius
4. Inferomedially-medial head astrocnemius

Question 11

Popliteal fossa contents

Answer 11

Superifical to deep

• nerves(common fibular nerve and tibial nerve)
• popliteal vein,lymph nodes and branches(small saphenous vein)
• popliteal artery and branches

Question 12

popliteal artery

Answer 12

• deepest structure in popliteal fossa
• continuation of femoral artery:becomes popliteal artery after passing through adductor hiatus
• Runs close to knee join capsule:
• –Gives rise to genicular branches
• supplies articular capsule and ligaments of knee joint

Question 13

Genicular anastomosis

Answer 13

• Descending branch of lateral femoral circumflex artery
• Superior lateral genicular artery
• inferior lateral genicular artery
• superior medial genicular artery
• inferior medial genicular artery

Question 14

Politeal artery Termination

Answer 14

Ends divide into :

1. anterior tibial artery
2. Posterior tibial artery

Question 15

Popliteal fein formed by waht?

Answer 15

Union of anterior and posterio tibial veins:usually near inferio border of popliteus muscle

Question 16

Popliteal vein

Answer 16

• small saphenous vein terminates into popliteal vein
• lies superficial to and in same fibrous sheath as popliteal artery
• becomes femoral vein after traversing adductor hiatus

Question 17

Nerves in popliteal fossa?

Answer 17

Sciatic nerve usually ends at superior angle of popliteal fossa where it divides:

• tibial nerve
• Common fibular(peroneal) Nerve

Question 18

Tibial Nerve

Answer 18

-Most superficial(relative to popliteal artery and vein)
Distribution:
-superficial and deep posterior leg muscles
-knee joint

Question 19

Common Fibular(peroneal) nerve

Answer 19

• Leaves popliteal fossa by passing superficial to lateral head of gastrocnemius
• Winds around head and Neck of fibula(susceptible to injury)
• deep to fibularis longus it terminates into :
  1. Deep fibular nerve
  2. Superficial Fibular nerve

Question 20

Sural Nerve is what type of nerve?

Answer 20

Cutaneous nerve

Question 21

What is the sural nerve composed of ?

Answer 21

• Medial sural cutaneous nerve from the tibial nerve

- sural(or fibular) communicating branch from the common fibular nerve or the lateral sural cutaneous nerve

Question 22

What does the sural nerve innervate?

Answer 22

• Supplies distal posterior aspect of leg and lateral aspect of ankle and foot
• Runs inferiorly with small saphenous vein

Question 23

Muscles of the hamstring

Answer 23

Semitendinosus
Semimembranosus
Biceps Femoris
—long head and short head

Question 24

True Hamstring

Answer 24

cross both the hip and the knee joint and are therefore involved in knee flexion and hip extension

Question 25

3 true hamstring muscles

Answer 25

• Semitendinosus
• semimembanosus
• biceps Femoris long head