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Functional Anatomy > Posterior and Anterior Thigh > Flashcards

Posterior and Anterior Thigh Flashcards

1
Q

What is the proximal attachment of the semitendinosus and semimembranosus?

A

Ischial tuberosity

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2
Q

What is the distal attachment of the semitendinosus?

A

Medial surface of superior part of tibia

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3
Q

What nerve innervates the semitendinosus and semimembranosus?

A

Tibial division of sciatic nerve (L5,S1,S2)

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4
Q

What is the main action of the semitendonosus and semimembranosus?

A
  • Extends thigh
  • flex leg and rotate it medially when leg is flexed
  • When thigh and leg are flexed these muscles can extend trunk
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5
Q

What is the distal attachment of the semimembranosus?

A

Medial condyle of tibia

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6
Q

What is the proximal attachment of the biceps femoris?

A

Long head: ischial tuberosity

Short head: linea aspera and lateral supracondylar line of femur

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7
Q

What is the distal attachment of the biceps femoris?

A

Head of fibula; tendon is split at this sight by fibular collateral ligament of knee

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8
Q

What nerve innervates the biceps femoris?

A

Long head: tibial division of sciatic nerve (L5,S1,S2)

Short head: common fibular division of sciatic nerve (L5,S1,S2)

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9
Q

What is the muscle action of the biceps femoris?

A
  • Flexes leg and rotates is laterally when knee is flexed

- Extends thigh

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10
Q

What is the proximal attachment of the pectineus?

A

Superior ramus of the pubis

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11
Q

What is the distal attachment of the pectineus?

A

Pectineal line inferior to lesser trochanter

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12
Q

What nerve innervates the pectineus?

A 
Femoral nerve (L2,L3) 
May receive branches from oburator nerve
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13
Q

What is the main action of the pectineus?

A
  • Adducts and flexes thigh

- Assists in medial rotation of thigh

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14
Q

What is the proximal attachment of the psoas major?

A

Sides of T12-L5 vertebrae

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15
Q

What is the distal attachment of the psoas major?

A

Lesser trochanter of femur

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16
Q

What nerve innervates the psoas major?

A

Anterior rami of lumbar nerves (L1, L2)

17
Q

What is the main action of the psoas major, psoas minor, and illiacus?

A
  • Flex thigh at hip joint

- stabilizes hip joint

18
Q

What is the proximal attachment of the psoas minor?

A

Sides of T12-L1 vertebrae and intervertebral discs

19
Q

What is the distal attachment of the psoas minor?

A

Pectineal line, iliopectineal eminence via iliopectineal arch

20
Q

What nerve innervates the psoas minor?

A

Anterior rami of lumbar nerve (L1, L2)

21
Q

What is the proximal attachment of the iliacus?

A
  • Iliac crest and fossa
  • ala of sacrum
  • Anterior sacro-iliac ligaments
22
Q

What is the distal attachment of the iliacus?

A
  • Tendon of psoas major

- Lesser trochanter of femur and below it

23
Q

What nerve innervates the iliacus?

A

Femoral nerve (L2, L3)

24
Q

What is the proximal attachment of the sartorius?

A

Anterior superior iliac spine

25
Q

What is the distal attachment of the sartorius?

A

Medial surface of tibia?

26
Q

What nerve the sartorius?

A

Femoral nerve (L2, L3)

27
Q

What is the main action of the sartorius?

A
  • Flexes, abducts, and laterally rotates thigh at hip joint

- Flexes leg at knee joint

28
Q

What id the proximal attachment of the rectus femoris?

A

Anterior inferior iliac spine

29
Q

What is the distal attachment of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius?

A

Quadriceps tendon and patellar tendon

30
Q

What nerve innervates the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius?

A

Femoral nerve (L2, L3, L4)

31
Q

What is the main action of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius?

A
  • Extend leg at knee joint

- Steadies hip joint

32
Q

What is the proximal attachment of the vastus lateralis?

A
  • Greater trochanter

- Linea aspera of femur

33
Q

What is the proximal attachment of the vastus medialis?

A
  • Intertrochanteric line

- Linea aspera of femur

34
Q

What is the proximal attachment of the vastus intermedius?

A

Shaft of femur

Functional Anatomy (9 decks)

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