Podcast
Questions and Answers
What muscles in the posterior compartment of the thigh are supplied by the tibial nerve?
What muscles in the posterior compartment of the thigh are supplied by the tibial nerve?
Which compartments does the common fibular nerve primarily innervate after supplying the short head of the biceps femoris?
Which compartments does the common fibular nerve primarily innervate after supplying the short head of the biceps femoris?
What forms the boundaries of the popliteal fossa laterally?
What forms the boundaries of the popliteal fossa laterally?
What is the floor of the popliteal fossa primarily constituted of?
What is the floor of the popliteal fossa primarily constituted of?
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What is the continuation of the femoral artery as it passes through the adductor hiatus?
What is the continuation of the femoral artery as it passes through the adductor hiatus?
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How many genicular branches does the popliteal artery give off in the popliteal fossa?
How many genicular branches does the popliteal artery give off in the popliteal fossa?
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Which structure is NOT found in the contents of the popliteal fossa?
Which structure is NOT found in the contents of the popliteal fossa?
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What shape is the popliteal fossa?
What shape is the popliteal fossa?
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Which muscle originates from the ischial tuberosity?
Which muscle originates from the ischial tuberosity?
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What is the primary action of the hamstrings?
What is the primary action of the hamstrings?
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Which nerve supplies the muscles of the posterior compartment of the thigh?
Which nerve supplies the muscles of the posterior compartment of the thigh?
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What is the insertion point of the Biceps Femoris?
What is the insertion point of the Biceps Femoris?
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Which of the following statements about the Sciatic nerve is true?
Which of the following statements about the Sciatic nerve is true?
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Which of these muscles is not part of the hamstrings?
Which of these muscles is not part of the hamstrings?
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What are the perforating branches of the profunda femoris artery responsible for?
What are the perforating branches of the profunda femoris artery responsible for?
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Which muscle contributes to hip adduction?
Which muscle contributes to hip adduction?
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Study Notes
Back of Thigh and Popliteal Fossa
- The sciatic nerve descends into the posterior thigh, originating from the gluteal region, innervating all posterior thigh muscles. Its branches extend to the leg and foot.
- The sciatic nerve rests on the adductor magnus muscle and is crossed by the long head of biceps femoris.
- The sciatic nerve divides into the tibial nerve and common fibular nerve, either before or after separating from the common fibular nerve.
- The popliteal fossa is a diamond-shaped area behind the knee, a crucial pathway between the thigh and leg.
Posterior Compartment of Thigh Muscles
- The posterior thigh contains hip extensors and knee flexors.
- Key muscles include: biceps femoris, semitendinosus, semimembranosus, and part of adductor magnus.
Blood Vessels
- Perforating branches of the profunda femoris artery supply blood to the posterior thigh.
Nerve Supply
- The sciatic nerve is the primary nerve supplying the posterior thigh muscles.
Popliteal Fossa Contents
- Key structures in the popliteal fossa include the termination of the small saphenous vein, popliteal artery and vein branches and tributaries, tibial and common fibular nerves, posterior cutaneous nerve of thigh, popliteal lymph nodes and lymphatic vessels.
Popliteal Fossa Boundaries
- Laterally: Biceps femoris, lateral head of gastrocnemius, plantaris
- Medially: Semimembranosus, semitendinosus, medial head of gastrocnemius
- Floor: Popliteal surface of the femur and the popliteus muscle
- Roof: Skin and fascia
Popliteal Artery Branches
- The popliteal artery gives five genicular branches: superior lateral, superior medial, middle, inferior lateral, and inferior medial genicular arteries. These branches form a network for blood supply around the knee.
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Description
This quiz covers the anatomy of the back of the thigh and the popliteal fossa, focusing on the sciatic nerve and its branches. Additionally, it explores the key muscles in the posterior compartment of the thigh, their functions, and the blood vessels involved. Test your knowledge on these critical aspects of lower limb anatomy.
