Module 8 Muscles Flashcards

1
Q

Iliacus - Innervation

A

Femoral nerve

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2
Q

Iliacus - origin

A

Iliac fossa

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3
Q

Iliacus - insertion

A

Lesser trochanter

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4
Q

Iliacus - actions

A

With origin fixed:
FLEX the coxal joint
May LATERALLY FLEX the coxal joint

With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY

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5
Q

Psoas Major - Innervation

A

Lumbar plexus

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6
Q

Psoas Major - origin

A

Bodies and transverse processes of lumbar vertebrae

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7
Q

Psoas Major - insertion

A

Lesser trochanter

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8
Q

Psoas Major - actions

A

With origin fixed:
FLEX the coxal joint
May LATERALLY ROTATE coxal joint

With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY

Unilaterally: assist to LATERALLY FLEX the lumbar spine

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9
Q

Piriformis - Innervation

A

Sacral plexus

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10
Q

Piriformis - origin

A

Anterior surface of sacrum

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11
Q

Piriformis - insertion

A

Superior aspect of greater trochanter

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12
Q

Piriformis - actions

A

LATERALLY ROTATE the coxal joint
ABDUCT the coxal joint when the hip is flexed

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13
Q

Quadratus Femoris - Innervation

A

Sacral plexus

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14
Q

Quadratus Femoris - origin

A

Lateral border of Ischial tuberosity

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15
Q

Quadratus Femoris - insertion

A

Intertrochanteric crest between the greater and lesser trochanters

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16
Q

Quadratus Femoris - actions

A

LATERALLY ROTATE the coxal joint

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17
Q

Obturator Internus - Innervation

A

Sacral plexus

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18
Q

Obturator internus - Origin

A

Obturator membrane & inferior surface of foramen

19
Q

Obturator internus - insertion

A

Medial surface of greater trochanter

20
Q

Obturator internus - actions

A

LATERALLY ROTATE the coxal joint

21
Q

Obturator externus - Innervation

A

Obturator nerve

22
Q

Obturator externus - origin

A

Rami of pubis and ischium,
Obturator membrane

23
Q

Obturator externus - insertion

A

Trochanteric fossa of femur

24
Q

Obturator externus - actions

A

LATERALLY ROTATE the coxal joint

25
Q

Gemellus Superior - Innervation

A

Sacral plexus

26
Q

Gemellus superior - origin

A

Ischial spine

27
Q

Gemellus superior - insertion

A

Medial surface of greater trochanter

28
Q

Gemellus superior - actions

A

LATERALLY ROTATE the coxal joint

29
Q

Gemellus inferior - Innervation

A

Sacral plexus

30
Q

Gemellus inferior - origin

A

Ischial tuberosity

31
Q

Gemellus inferior - actions

A

LATERALLY ROTATE the coxal joint

32
Q

Gemellus inferior - insertion

A

Medial surface of the greater trochanter

33
Q

Quadratus Lumborum - innervation

A

Lumbar plexus (T12-L3)

34
Q

Quadratus Lumborum - origin

A

Posterior iliac crest

35
Q

Quadratus Lumborum - insertion

A

Last rib,
TVPs of L1-L4

36
Q

Quadratus Lumborum - Actions

A

LATERALLY TILT pelvis
LATERALLY FLEX the vertebral column
Assist to EXTEND the vertebral column
FIX the last rib during forced inhalation and exhalation

37
Q

Gluteus Maximus - Innervation

A

Inferior gluteal nerve (L5, S1, S2)

38
Q

Gluteus Maximus - Origin

A

Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments

39
Q

Gluteus Maximus - insertion

A

Upper fibers: Iliotibial tract

Lower fibers: gluteal tuberosity

40
Q

Gluteus Maximus - Actions

A

EXTEND
LATERALLY ROTATE
ABDUCT
The coxal joint

Lower fibers: ADDUCT the coxal joint

41
Q

Gluteus Medius - Innervation

A

Superior gluteal nerve, L4, L5, and S1

42
Q

Gluteus Medius - Origin

A

Gluteal surface of the ilium,
Between posterior and anterior gluteal lines,
Just below iliac crest

43
Q

Gluteus Medius - Insertion

A

Lateral aspect of greater trochanter

44
Q

Gluteus Medius - Actions

A

Posterior fibers:
ABDUCT, EXTEND, LATERALLY ROTATE the coxal joint
POSTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint

Middle fibers:
ABDUCT the coxal joint
DEPRESS the same side of the pelvis at the hip joint

Anterior fibers:
ABDUCT, FLEX, MEDIALLY ROTATE the coxal joint
ANTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint