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15 Cards in this Set
- Front
- Back
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purpose of anterior ab wall muscles
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hold/protect viscera
assist w/ quiet & forced respiration, coughing, vomiting increase intra-ab pressure for parturition, micturition and defecation |
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external obliques
(action, orientation, nerve) |
compress ab contents, flex trunk
T7-T11 ICs run inferomedially, "down and in" |
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internal obliques
(action, orientation, nerve) |
compress ab contents, flex trunk
T7-11 run superomedially, "down and out" |
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transversus abdominis
(action, orientation, nerve) |
compress ab contents
T7-11 run transversely |
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rectus abdominis
(action, orientation, nerve) |
compress ab contents, flex trunk, flex vert column, tense ab wall
T7-11 run up & down enclosed in rectus sheath |
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rectus sheath
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aponeurotic tendinous sheath formed by external/internal obliques and transversus abdominis tendons
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anterior rectus sheath
(above & below arcuate line) |
covers entire ant surface of RAbs
above: -external oblique & 1/2 internal oblique tendons below: -external, internal, and transversis tendons |
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posterior rectus sheath
(above & below arcuate line) |
lines only upper 3/4 of RAbs
above: -1/2 internal, transversis tendons below: -just transversalis fascia & parietal peritoneum (not part of sheath) |
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arcuate line
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arch of fibers marking transition of all aponeuroses to anterior side of rectus abs
where posterior sheath ends |
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psoas major
(action, nerve) |
flex thigh
L1-3 |
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psoas minor
(action, nerve) |
flex lumbar verts
L1 |
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quadratus lumborum
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depress/stabilize rib 12
bend trunk laterally T12-L4 |
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iliacus
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flex thigh
L2-4 |
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diaphragm blood supply
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superior: musculophrenic, pericardiacophrenic, superior phrenic arts
inferior: inferior phrenic art |
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diaphragm innervation
(motor & sensory) |
motor: phrenic nerve (C3-4-5)
sensory: phrenic nerve (central) and IC nerves (periph) |
