Module 8 Muscles Flashcards by Tatum Erickson

Iliacus - Innervation

Femoral nerve

How well did you know this?

Not at all

Perfectly

Iliacus - origin

Iliac fossa

How well did you know this?

Not at all

Perfectly

Iliacus - insertion

Lesser trochanter

How well did you know this?

Not at all

Perfectly

Iliacus - actions

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

How well did you know this?

Not at all

Perfectly

Psoas Major - Innervation

Lumbar plexus

How well did you know this?

Not at all

Perfectly

Psoas Major - origin

Bodies and transverse processes of lumbar vertebrae

How well did you know this?

Not at all

Perfectly

Psoas Major - insertion

Lesser trochanter

How well did you know this?

Not at all

Perfectly

Psoas Major - actions

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

How well did you know this?

Not at all

Perfectly

Piriformis - Innervation

Sacral plexus

How well did you know this?

Not at all

Perfectly

Piriformis - origin

Anterior surface of sacrum

How well did you know this?

Not at all

Perfectly

Piriformis - insertion

Superior aspect of greater trochanter

How well did you know this?

Not at all

Perfectly

Piriformis - actions

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

How well did you know this?

Not at all

Perfectly

Quadratus Femoris - Innervation

Sacral plexus

How well did you know this?

Not at all

Perfectly

Quadratus Femoris - origin

Lateral border of Ischial tuberosity

How well did you know this?

Not at all

Perfectly

Quadratus Femoris - insertion

Intertrochanteric crest between the greater and lesser trochanters

How well did you know this?

Not at all

Perfectly

Quadratus Femoris - actions

LATERALLY ROTATE the coxal joint

How well did you know this?

Not at all

Perfectly

Obturator Internus - Innervation

Sacral plexus

How well did you know this?

Not at all

Perfectly

Obturator internus - Origin

Obturator membrane & inferior surface of foramen

Obturator internus - insertion

Medial surface of greater trochanter

Obturator internus - actions

LATERALLY ROTATE the coxal joint

Obturator externus - Innervation

Obturator nerve

Obturator externus - origin

Rami of pubis and ischium,
Obturator membrane

Obturator externus - insertion

Trochanteric fossa of femur

Obturator externus - actions

LATERALLY ROTATE the coxal joint

Gemellus Superior - Innervation

Sacral plexus

Gemellus superior - origin

Ischial spine

Gemellus superior - insertion

Medial surface of greater trochanter

Gemellus superior - actions

LATERALLY ROTATE the coxal joint

Gemellus inferior - Innervation

Sacral plexus

Gemellus inferior - origin

Ischial tuberosity

Gemellus inferior - actions

LATERALLY ROTATE the coxal joint

Gemellus inferior - insertion

Medial surface of the greater trochanter

Quadratus Lumborum - innervation

Lumbar plexus (T12-L3)

Quadratus Lumborum - origin

Posterior iliac crest

Quadratus Lumborum - insertion

Last rib, TVPs of L1-L4

Quadratus Lumborum - Actions

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

Gluteus Maximus - Innervation

Inferior gluteal nerve (L5, S1, S2)

Gluteus Maximus - Origin

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

Gluteus Maximus - insertion

Upper fibers: Iliotibial tract Lower fibers: gluteal tuberosity

Gluteus Maximus - Actions

EXTEND LATERALLY ROTATE ABDUCT The coxal joint Lower fibers: ADDUCT the coxal joint

Gluteus Medius - Innervation

Superior gluteal nerve, L4, L5, and S1

Gluteus Medius - Origin

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

Gluteus Medius - Insertion

Lateral aspect of greater trochanter

Gluteus Medius - Actions

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