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Gross Anatomy > Muscles of the Thigh > Flashcards

Muscles of the Thigh Flashcards

1
Q

Rectus femoris

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Anterior inferior iliac spine (straight head), ilium (superior to acetabulum)(reflected head)
  • Distal Attachment: Tibial tuberosity
  • Action: Extend leg at knee, flex thigh at hip joint
  • Innervation: Femoral nerve
  • Blood Supply: Profunda femoris, lateral circumflex femoral arteries
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2
Q

Vastus Intermedius

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Anterior and lateral surfaces of body of femur
  • Distal Attachment: Tibial tuberosity
  • Action: Extends leg at knee
  • Innervation: Femoral nerve
  • Blood Supply: Profunda femoris, lateral circumflex femoral arteries
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3
Q

Vastus lateralis

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Greater trochanter, lateral lip of linea aspera of femur
  • Distal Attachment: Tibial tuberosity
  • Action: Extends legs at knee
  • Innervation: Femoral nerve
  • Blood Supply: Profunda femoris, lateral circumflex femoral arteries
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4
Q

Vastus medialis

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Intertrochanteric line, medial lip of linea aspera of femur
  • Distal Attachment: Tibial tuberosity
  • Action: Extends leg at knee
  • Innervation: Femoral nerve
  • Blood Supply: Femoral artery, profunda femoris artery
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5
Q

Sartorius

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Anterior superior iliac spine
  • Distal Attachment: Upper medial surface of tibia
  • Action: Abducts, laterally rotates, flexes thigh; flexes knee joint
  • Innervation: Femoral nerve
  • Blood Supply: Femoral artery
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6
Q

Pectineus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Superior ramus of pubis
  • Distal Attachment: Pectineal line of femur
  • Action: Adducts thigh, flexes thigh at hip, medially rotates thigh
  • Innervation: Femoral nerve
  • Blood Suppy: Medial circumflex artery, obturator artery
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7
Q

Iliacus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Iliac fossa, iliac crest
  • Distal Attachment: Lesser trochanter of femur
  • Action: Flexes thigh at hip, stabilizes hip joint
  • Innervation: Femoral nerve
  • Blood Supply: Iliac branches of ilolumbar artery
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8
Q

Psoas Major

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Transverse process of lumbar vertebrae, side bodies of T12-L5
  • Distal Attachment: Lesser trochanter of femur
  • Action: Flexes hip
  • Innervation: L1, 2, 3 nerves
  • Blood Supply: Lumbar arteries of iliolumbar artery
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9
Q

Adductor brevis

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Body and inferior pubic ramus
  • Distal Attachment: Medial side of linea aspera of femur
  • Action: Adducts thigh at hip
  • Innervation: Obturator nerve
  • Blood Supply: Profunda femoris, medial circumflex femoral, obturator arteries
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10
Q

Adductor longus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Body of pubis inferior to pubic crest
  • Distal Attachment: Medial side of linea aspera of femur
  • Action: Adducts thigh at hip, weakly flexes thigh
  • Innervation: Obturator nerve
  • Blood Supply: Profunda femoris, medial circumflex femoral arteries
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11
Q

Adductur magnus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment:
    • Adductor part: Ischiopubic ramus
    • Hamstring part: Ischial tuberosity
  • Distal Attachment:
    • Adductor part: Gluteal tuberosity, linea aspera of femur
    • Hamstring part: Adductor tubercle of femur
  • Action:
    • Adductor part: Adducts and weakly flexes thigh
    • Hamstring part: Adducts and weakly extends thigh
  • Innervation:
    • Adductor part: Obturator nerve
    • Hamstring part: Sciatic nerve (tibial division)
  • Blood supply: Profunda femoris, femoral artery, obturator artery
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12
Q

Gracilis

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Body and inferior ramus of pubis
  • Distal Attachment: Upper medial surface of tibia (immediately posterior to attachment of sartorius)
  • Action: Adducts thigh, flexes and medially rotates leg
  • Innervation: Obturator nerve
  • Blood Supply: Profunda femoris artery, medial circumflex femoral artery
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13
Q

Gluteus maximus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Posterior gluteal line, sacrum (dorsal surface), occyx, sacrotuberous ligament
  • Distal Attachment: Gluteal tuberosity, iliotibial tract
  • Action: Extend thigh, lateral rotation of thigh, abduction of thigh
  • Innervation: Inferior gluteal nerve
  • Blood Supply: Inferior gluteal arteries
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14
Q

Gluteus medius

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Between anterior and posterior gluteal lines of ilium
  • Distal Attachment: Lateral surface of greater trochanter of femur
  • Action: Abducts thigh, medially rotates thigh, stabilizes pelvis when opposite leg is raised
  • Innervation: Superior gluteal nerve
  • Blood Supply: Superior gluteal artery
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15
Q

Gluteus minimus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Between inferior and anterior gluteal lines
  • Distal Attachment: Anterior surface of greater trochanter of femur
  • Action: Abducts thigh, medially rotates thigh, stabilizes pelvis when opposite leg is raised
  • Innervation: Superior gluteal nerve
  • Blood Supply: Superior gluteal artery
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16
Q

Tensor fascial latae

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Suppy

A
  • Proximal Attachment: Iliac crest between anterior superior iliac spine and tuberculum
  • Distal Attachment: Iliotibial tract
  • Action: Tenses fascia lata and counteracts backward pull of gluteus maximus, abducts thigh, medially rotates thigh, flexes thigh, aids in knee extension
  • Innervation: Superior gluteal nerve
  • Blood Supply: Lateral circumflex femoral artery
17
Q

Piriformis

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Sacrum (anterior surface)
  • Distal Attachment: Greater trochanter
  • Action: Laterally rotates extended thigh, abducts flexed thigh
  • Innervation: Ventral rami of L5, S1, S2
  • Blood Supply: Superior and inferior gluteal arteries, internal pudendal artery
18
Q

Superior gemellus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Ischial spine (outer surface)
  • Distal Attachment: Greater trochanter of femur (medial surface)
  • Action: Laterally rotates extended thigh
  • Innervation: Nerve to obturator internus
  • Blood Supply: Inferior gluteal artery, internal pudendal artery
19
Q

Obturator internus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Pelvic surface of obturator membrane and obturator foramen
  • Distal Attachment: Greater trochanter of femur (medial surface) (posterior to neck of femur)
  • Action: Laterally rotates extended thigh
  • Innervation: Nerve to oburator internus
  • Blood Supply: Internal pudendal artery, obturator artery
20
Q

Inferior gemellus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Upper ischial tuberosity
  • Distal Attachment: Greater trochanter of femur (medial surface)
  • Action: Laterally rotates extended thigh
  • Innervation: Nerve to quadratus femoris
  • Blood Supply: Medial circumflex femoral artery
21
Q

Quadratus femoris

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Ischial tuberosity (lateral margin)
  • Distal Attachment: Intertrochanteric crest
  • Action: Laterally rotates thigh at hip
  • Innervation: Nerve to quadratus femoris
  • Blood Supply: Medial circumflex femoral artery
22
Q

Obturator externus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: External surface of obturator foramen and obturator membrane
  • Distal Attachment: Trochanteric fossa (posterior to neck of femur)
  • Action: Laterally rotates thigh
  • Innervation: Obturator nerve
  • Blood Supply: Medial circumflex femoral artery, obturator artery
23
Q

Biceps femoris

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment:
    • Long head: Ischial tuberosity
    • Short head: Lateral side of linea aspera (NOT A HAMSTRING MUSCLE)
  • Distal Attachment: Head of fibula (lateral side)
  • Action: Flexes leg, laterally rotates leg when knee is flexed, extends thigh at hip
  • Innervation:
    • Long head: Sciatic nerve (tibial division L5-S2)
    • Short head: Sciatic nerve (common fibular division)
  • Blood Supply: Profunda femoris, inferior gluteal, medial circumflex femoral arteries
24
Q

Semitendinosus

Proximal Attachment

Distal Attachment

Action

Innervation
Blood Supply

A
  • Proximal Attachment: Ischial tuberosity
  • Distal Attachment: Tibia (upper medial surface)
  • Action: Flexes leg, extends thigh, extends leg medially when knee is flexed
  • Innervation: Sciatic nerve (tibial division)
  • Blood Supply: Profunda femoris artery, medial circumflex femoral artery
25
Q

Semimembranosus

Proximal Attachment

Distal Attachment

Action

Innervation

Blood Supply

A
  • Proximal Attachment: Ischial tuberosity
  • Distal Attachment: Medial tibial condyle (medial posterior surface)
  • Action: Flexes leg, extends thigh, rotates leg medially when knee is flexed
  • Innervation: Sciatic nerve (tibial division)
  • Blood Supply: Profunda femoris artery, medial circumflex femoral artery
26
Q

Pes anserinus

Made from what muscle tendons?

A
  • Sartorius (anterior compartment)
  • Gracilis (medial compartment)
  • Semitendinosus (posterior compartment)
  • Attached to proximal anteromedial part of tibia
27
Q

Popliteal fossa

Boundaries

Contents

A
  • Boundaries
    • Gastrocnemius (lateral and medial heads) - inferior boundary
    • Semimembranosus - upper medial boundary
    • Biceps femoris - upper lateral boundary
  • Contents:
    • Tibial nerve (off sciatic nerve)
    • Common fibular nerve (off sciatic nerve)
    • Popliteal artery
    • Popliteal vein
    • Small saphenous vein

Gross Anatomy (21 decks)

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