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Anatomy > 31. Posterior Thigh and Popliteal Fossa > Flashcards

31. Posterior Thigh and Popliteal Fossa Flashcards

1
Q

Which muscles make up the posterior thigh?

A

Hamstrings - semitendonosus, semimembranosus, biceps femoris

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2
Q

Action of posterior thigh muscles?

A

Extend hip
Flex knee

Also contribute to rotation of the knee

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3
Q

Origin of semitendinosus?

A

Ischial tuberosity

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4
Q

Insertion of semitendinosus?

A

Medial surface of superior tibia

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5
Q

Innervation of semitendinosus?

A

Tibial division of sciatic L5, S1, S2

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6
Q

Origin of semimembranosus?

A

Ischial tuberosity

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7
Q

Insertion of semimembranosus?

A

Posterior surface of medial condyle of tibia

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8
Q

Innervation of semimembranosus?

A

Tibial division of sciatic L5, S1, S2

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9
Q

Origin of biceps femoris?

A

Long head - ischial tuberosity

Short head - linea aspera and lateral supracondylar line of femur

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10
Q

Insertion of biceps femoris?

A

Head of fibula

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11
Q

Innervation of biceps femoris?

A

Long - tibial division of sciatic L5, S1, S2

Short - common peroneal division of sciatic L5, S1, S2

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12
Q

Which posterior thigh muscles laterally rotate the knee when the knee IS FLEXED?

A

Biceps femoris

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13
Q

Which posterior thigh muscles medially rotate the knee when the knee IS FLEXED?

A

Semimembranosus
Semitendinosus
Gracilis
Sartorius

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14
Q

Which posterior thigh muscle does the sciatic nerve pass deep to?

A

Long head of biceps femoris

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15
Q

What nerves and vessels pierce the deep fascial roof of the popliteal fossa?

A

Sural nerve

Short saphenous vein

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16
Q

Superior boundary of popliteal fossa?

A

Diverging tendons of hamstrings
Lateral - biceps femoris
Medial - semimem/tend

17
Q

Inferior boundary of popliteal fossa?

A

Medial and lateral heads of gastrocnemius

18
Q

Contents of popliteal fossa?

A

Popliteal artery (medial and deep)
Popliteal vein
Tibial nerve
Common fib nerve (lateral and superficial)

19
Q

What makes up the floor of the popliteal fossa?

A

Popliteal surface of femur
Capsule of knee joint
Popliteus muscle

20
Q

What makes up the floor of the popliteal fossa?

A

Oblique popliteal ligament

21
Q

What tendon does the oblique popliteal ligament come from?

A

Expansion of semimembranosus

22
Q

What vessels pierce the joint capsule of knee joint?

A

Middle genicular vessels

23
Q

What do the middle genicular vessels supply?

A

Cruciate ligaments

24
Q

Where does the popliteal artery run to and from?

A

Adductor hiatus

Inferior border of popliteus

25
Q

How many genicular artery branches of popliteal are there?

A

5

26
Q

What are the terminal branches of the popliteal artery?

A

Anterior and posterior tibial

Anatomy (49 decks)

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