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Anatomy Exam 3 > Thigh Muscles > Flashcards

Thigh Muscles Flashcards

1
Q

What are the Flexors of the Hip Joint?

A
  • Pectineus
  • Iliopsoas (Psoas Major)
  • Psoas mionor
  • Iliacus
  • Sartorius
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2
Q

Are the Flexors of the Hip Joint Anterior or Posterior?

A

ANTERIOR Muscles of thigh

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3
Q

What is the origin (proximal attachment) of the Pectineus?

A

Superior ramus of pubis

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4
Q

What is the insertion (distal attachment) of the Pectineus?

A

Pectineal Line of femur, just inferior to lesser trochanter

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5
Q

What is the innervation of the Pectineus?

A

Femoral nerve (L2, L3),

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6
Q

What is the main action of the Pectineus?

A

Adducts and flexes thigh; assists with medial rotation of thigh

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7
Q

What is the origin (proximal attachment) of the Iliopsoas & (Psoas major)?

A

Sides of T12-L5 vertebrae and discs between them; transverse processes of all lumbar vertebrae

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8
Q

What is the insertion (distal attachment) of the Iliopsoas & (Psoas major)?

A

Lesser trochanter of femur

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9
Q

What is the innervation of the Iliopsoas & (Psoas major)?

A

Anterior rami of Lumbar nerves (L1, L2, L3)

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10
Q

What is the origin (proximal attachment) of the Psoas minor?

A

Sides of T12-L1 vertebrae and intervertebral discs between them

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11
Q

What is the insertion (distal attachment) of the Psoas minor?

A

Pectineal line, iliopectineal eminence via iliopectineal arch

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12
Q

What is the innervation of the Psoas minor?

A

Anterior rami of Lumbar nerves (L1, L2)

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13
Q

What is the origin (proximal attachment) of the Iliacus?

A

Iliac crest, iliac fossa, ala of sacrum, and anterior sacro-iliac ligaments

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14
Q

What is the insertion (distal attachment) of the Iliacus?

A

Tendon of psoas major, lesser trochanter, and femoral distal to it

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15
Q

What is the innervation of the Iliacus?

A

Femoral nerve L2, L3

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16
Q

What is the main action of the

  • Iliopsoas & (Psoas major)
  • Psoas minor
  • Iiliacus
A

Act conjoinly in flexing thigh at hip joint and in stabilizing this joint

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17
Q

What is the origin (proximal attachment) of the Sartorius?

A

Anterior superior iliac spine and superior part of notch inferior to it

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18
Q

What is the insertion (distal attachment) of the Sartorius?

A

Superior part of medial surface of tibia

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19
Q

What is the innervation of the Sartorius?

A

Femoral nerve (L2, L3)

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20
Q

What is the main action of the Sartorius?

A

Flexes, abducts, and laterally rotates thigh at hip joint; flexes leg at knee joint, (medially rotating leg when knee is flexed)

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21
Q

What are the Extensors of the Knee?

A
  • Quadriceps Femoris
    1. ) Rectus femoris
    2. ) Vastus lateralis
    3. ) Vastus medialis
    4. ) Vastus intermedius
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22
Q

Are the Extensors of the Knee Anterior or Posterior?

A

ANTERIOR!!!!

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23
Q

What is the origin (proximal attachment) of the Rectus femoris?

A

Anterior inferior iliac spine and ilium superior to acetabulum

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24
Q

What is the origin (proximal attachment) of the Vastus lateralis?

A

Greater trochanter and lateral lip of linea aspera of femur

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25
What is the origin (proximal attachment) of the Vastus medialis?
Intertrochanteric line and medial lip of linea aspera of femur
26
What is the origin (proximal attachment) of the Vastus intermedius?
Anterior and lateral surfaces of shaft of femur
27
What is the insertion (distal attachment) for ALL the muscles of the Quadriceps femoris?
- Via common tendinous (quadriceps tendon) and independent attachments to base of patella - Indirectly via patellar ligament to tibial tuberosity - Medial and lateral vasti also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)
28
What is the innervation for ALL the muscles of the Quadriceps femoris?
Femoral nerve (L2, L3, L4)
29
What is the main action for ALL the muscles of the Quadriceps femoris?
Extend leg at knee joint; rectus femoris also steadies hip joint and helps iliopsoas flex thigh
30
What are the Adductors of the thigh?
- Adductor Longus - Adductor brevis - Adductor magnus - Gracilis - Obturator externus
31
Are the Adductors of the thigh Anterior or Posterior?
ANTERIOR!
32
What is the origin (proximal attachment) of the Adductor Longus?
Body of pubis inferior to pubic crest
33
What is the insertion (distal attachment) of the Adductor Longus?
Middle third of linea aspera of femur
34
What is the main action of the Adductor Longus?
Adducts thigh
35
What is the origin (proximal attachment) of the Adductor brevis?
Body and inferior ramus of pubis
36
What is the insertion (distal attachment) of the Adductor brevis?
Pectineal line and proximal part of linea aspera of femur
37
What is the innervation for both the Adductor Longus and Adductor brevis?
Obturator nerve, branch of anterior division (L2, L3, L4)
38
What is the main action of the Adductor brevis?
Adducts thigh; to some extent flexes it
39
What is the origin (proximal attachment) of the Adductor magnus?
- Adductor part: Inferior ramus of pubis, ramus of ischium | - Hamstrings part: ischial tuberosity
40
What is the insertion (distal attachment) of the Adductor magnus?
- Adductor part: gluteal tuberosity, linea apsera, medial supracondylar line - Hamstrings part: adductor tubercle of femur
41
What is the innervation for both the Adductor magnus?
- Adductor part: Obturator nerve, branch of posterior division (L2, L3, L4) - Hamstrings part: tibial part of sciatic nerve
42
What is the main action of the Adductor magnus?
- adducts thigh - Adductor part: flexes thigh - Hamstrings part: extends thigh
43
What is the origin (proximal attachment) of the Gracilis?
Body and inferior ramus of pubis
44
What is the insertion (distal attachment) of the Gracilis?
Supeior part of medial surface of tibia
45
What is the innervation for both the Gracilis?
Obturator nerve (L2, L3)
46
What is the main action of the Gracilis?
- Adducts thigh - Flexes leg - helps rotate leg medially
47
What is the origin (proximal attachment) of the Obturator Externus?
Margins of obturator foramen and obturator membrane
48
What is the insertion (distal attachment) of the Obturator Externus?
Trochanteric fossa of femur
49
What is the innervation for the Obturator Externus?
Obturator nerve (L3, L4)
50
What is the main action of the Obturator Externus?
Laterally rotates thigh; steadies head of femur in acetabulum
51
What are the Extensors of the Hip and Flexors of the Knee?
- Semitendinosus - Semimembranosus - Biceps Femoris
52
Are the Extensors of the Hip and Flexors of the Knee Anterior or Posterior?
POSTERIOR!
53
What is the origin (proximal attachment) of both the Semitendinosus and the Semimembranosus?
Ischial Tuberosity
54
What is the insertion (distal attachment) of the Semitendinosus?
Medial surface of superior part of tibia
55
What is the insertion (distal attachment) of the Semimembranosus?
- Posterior part of medial condyle of tibia | - Reflected attachment forms oblique popliteal ligament (to lateral femoral condyle)
56
What is the innervation for both the Semitendinosus and the Semimembranosus?
Tibial division of sciatic nerve (L5, S1, S2)
57
What is the main action of the both the Semitendinosus and the Semimembranosus?
- Extend thigh - Flex leg and rotate it medially when knee is flexed - When thigh and leg are flexed, they can extend the trunk
58
What is the origin (proximal attachment) of the Biceps Femoris?
- Long head: Ischial Tuberosity | - Short head: Linea aspera and lateral supracondylar line of femur
59
What is the insertion (distal attachment) of the Biceps Femoris?
- Lateral side of head of fibula | - tendon is split at this site by fibular collateral ligament of knee
60
What is the innervation for the Biceps Femoris?
- Long head: tibial division of sciatic nerve (L5, S1, S2) | - Short head: common fibular division of sciatic nerve (L5, S1, S2)
61
What is the main action of the Biceps Femoris?
- Flexes leg and rotates it laterally when knee is flexed | - extends thigh

Anatomy Exam 3 (5 decks)

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