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THE MUSCLES OF THE POST ABDOMINAL WALL & PELVIC WALL AND FLOOR
ORIGIN
INSERTION INNERVATION ARTERY
ACTION
Posterior
Abdominal Wall
Psoas Major
Sides of inter vert discs Lesser Trochanter
Lumbar Plexus Lumbar
Flexes thigh
& adj. Vert bodies T12-
L2-L3 Femoral N 1-4
trunk
L5 Tp’s and lumbar vert joint
Psoas Minor
Body and intervert. Disk Pelvic Brim at
Lumbar plexus
Assists
Of T12-L1
Pectinate line
T12, L2
Psoas major
Iliacus
Ant. Iliac fossae, ant side With PSOAS MAJOR branches of
femoral Flex at hip
Of
crest of iliac m, + at Ilio Psoas
L2,
L3
Lig holding iliac
bone to under inguinal over
Ant. Sacral-iliac lig pelvic brim
PELVIC
WALL AND FLOOR:
1.
Obturator Internus Forms Lateral side of Pelvic
Wall L5, S1, S2
Inf. Glut A.
2.
Piriformis Anterior side
of sacrum inside of pelvis
S1, S2
Inf. Glut
3.
Coccygeus Ischial
spine Lateral borders of
Coccygeal Nerve Inf.
Glut No action
support
lower 2 sacral Floor
4.
Levator Ani. Forms the Pelvic
diaphragm or bottom of pelvic cavity
Inf. Glut'
1.
Puborectalis Pubis
Ramis not seen from unite with pubo- Pudendal
S3, S4 Inf. Glut Sustain wt2
pelvic surface
Coccygeus into
itself pelvic cavity
2.
Pubococcygeus
Ramis of pelvis sacrum
and coccyx Pudendal S3-S4 Inf. Glut Sustain wt of
forms
anococcygeal pelvic cavity
ligament
3.
Iliococcygeus Arcus tendinous +
Ramis of Coccyx
Pudendal S3-S4 Inf. Glut Sustain wt of
spine of ischeum
pelvic cavity
by Dr. Scott David Neff MSOM MPS-BT DC DABCO CFE FFAAJTS 09-31-2004
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