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ANATOMY LOWER LIMB > The Thigh > Flashcards

The Thigh Flashcards

1
Q

What are the 3 compartments of the thigh?

A
  1. anterior
  2. medial
  3. posterior
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2
Q

What are the 2 main parts of the ANTERIOR compartment of the thigh?

A
  1. sartorius
  2. quadriceps femoris
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3
Q

What 4 muscles make up the quadriceps femoris?

A
  1. vastus medialis
  2. vastus lateralis
  3. vastus intermedius
  4. rectus femoris
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4
Q

Sartorius (O.I.A.I) - longest muscle in the body

A

origin: anterior superior iliac spine

insertion: medial tibial condyle

action: flexes the knee

innervation: femoral nerve

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5
Q

Vastus medialis (O.I.A.I)

A

origin: medial side of linea aspera

insertion: patella

action: extends knee

innervation: femoral nerve

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6
Q

Vastus lateralis (O.I.A.I)

A

origin: lateral side of linea aspera

insertion: patella

action: extends knee

innervation: femoral nerve

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7
Q

Vastus intermedius (O.I.A.I)

A

origin: shaft of femur

insertion: superior border of patella

action: extends knee

innervation: femoral nerve

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8
Q

Rectus femoris (O.I.A.I)

A

origin: anterior inferior iliac spine

insertion: superior border of patella

action: extends knee, flexes hip (kicking action)

innervation: femoral nerve

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9
Q

Iliopsoas muscle (O.I.A.I)

A

iliacus origin: blade of ilieum

psoas origin: transverse process of lumbar spine

insertion: lesser trochanter

action: N/A

innervation: lumbar plexus (L2, L3)

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10
Q

What is NAVL?

A

Nerve
Artery
Vein
Limphatics

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11
Q

What is the main action of the muscles in the MEDIAL compartment of the thigh?

A

adductors of the hip (thigh)

generally innervated by the obturator nerve with 2 exceptions!!!

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12
Q

What muscles make up the ANTERIOR layer of the medial compartment of the thigh?

A
  1. gracilis
  2. pectineus
  3. adductor longus
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13
Q

Gracilis (O.I.A.I)

A

origin: pubis

insertion: upper tibia

action: adduction, flexing and medially rotating the hip

innervation: obturator nerve

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14
Q

Pectineus (O.I.A.I)

A

origin: pubis

insertion: uppermost muscle on the linea aspera

action: adducts the hip

innervation: femoral and obturator nerves

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15
Q

Adductor longus (O.I.A.I)

A

origin: pubis

insertion: below pectineus on linea aspera

action: adducts the hip

innervation: obturator nerve

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16
Q

What muscles make up the POSTERIOR layer of the medial compartment of the thigh?

A
  1. adductor brevis
  2. adductor magnus
17
Q

Adductor brevis (O.I.A.I)

A

origin: pubis

insertion: behind the pectineus and above adductor magnus on the linea aspera

action: adducts the hip

innervation: obturator nerve

18
Q

Adductor magnus (O.I.A.I)

A

origin: pubis

insertion: top part is below the adductor brevis on linea aspera, lower part inserts into adductor tubercle on the medial epicondyle

action: adducts the hip

innervation: top part is obturator nerve, bottom part is tibial division of the sciatic nerve

19
Q

What 3 muscles make up the POSTERIOR compartment of the thigh?

A
  1. biceps femoris
  2. semitendinosus
  3. semimembranosus
20
Q

Biceps femoris (O.I.A.I)

A

long head origin: ischial tuberosity

short head origin: linea aspera

insertion: head of fibula

long head action: extends hip, flexes knee

short head action: flexes knee

long head innervation: tibial division of the sciatic nerve

short head innervation: common perineal division of the sciatic nerve

21
Q

Semitendinosus (O.I.A.I)

A

origin: ischial tuberosity

insertion: proximal tibia

action: extends hip, flexes knee

innervation: tibial division of sciatic nerve

22
Q

Semimembranosus (O.I.A.I)

A

origin: ischial tuberosity

insertion: behind medial condyle of tibia

action: extends hip, flexes knee

innervation: tibial division of sciatic nerve

23
Q

Lateral meniscus

A
  • round
  • only attaches centrally
  • moves only anteriorly and posteriorly
24
Q

Medial meniscus

A
  • fixed
  • cannot move
  • more damage if injured

ANATOMY LOWER LIMB (5 decks)

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