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living anatomy


transverse abdominus a-compress abdominal contents o-lateral inguinal ligament, iliac crest, thoracolumbar aponeurosis, internal surface of last six ribs i-abdominal aponeurosis to linea alba
rectus abdominus a-flex vertebral column o-pubic sympysis, pubic crest i-cartilage of ribs 5, 6,7 and xyphoid process
external oblique a-uni-flex v.column to same side, rotate to opposite side bi-flex vertebral column, compress abdominal contents o-lower 8 ribs i-anterior part of iliac crest, abdominal aponeurosis to linea alba
internal obilque a-uni flex v.c to same side, rotate to same side bi-flex vc, compress abdominal contents o-lateral inguinal ligament, iliac crest, thoracolumbar facia i-internal surface of lower 3 ribs, abdominal aponeurosis to linea alba
psoas major a-flex hip, adduction, lat rotate reverse-anterior pevic tilt, rotate lumbar vert to opposite side, laterally flex vertbrae to same side o-tp of T12-L5, lateral aspect of bodies of T12-L5, and disks b/t T12-L5 i-lesser trochanter of femur
iliacus a-flex hip, adduct hip, lat rotate reverse-anterior pevlic tilt o-internal iliac fossa i-lesser trochanter of femur
diaphragm a-draw central tendon down, increase volume of thoracic cavity to assist inspiration o-costal-internal surface of lower 6 ribs sternal-inner part of xyphoid process lumbar-upper 2 or 3 lumbar vertebrae i-central tendon
intercostals a-ext-draw ribs up & out inspiration int-draw ribs inferiorly during exhalation o-inferior border of rib above i-superior border of rib below
splenius capitis a-extend h/n, lat flex h.n to same side, rotate h/n to same side o-sp of C7-T3, lower part of nuchal ligament i-mastoid process of temporal bone, lateral part of superior nuchal line
splenuis cervicis a-extend h/n, lat flex h/n to same side, rotate h/n to same side o-sp of T3-T6 i-tp of C1-C3
serratus posterior superior a-elevate ribs during inhalation o-spinous process of C7-T3 i-posterior surface of ribs 2-5
serratus posterior inferior a-depress ribs during exhalation o-sp of T12-L3 i-posterior surface of ribs 9-12
muscles of breathing diaphragm, external intercostals, scalenes, sternocleidomastoid, serratus posterior superior, pec minor, pec major, serratus anterior expiration:diaphragm, int intercost, abdominals, serr post inf
erector spinae group iliocostalis, longissimus, spinalis
thoracolumbar aponeurosis o-posterior sacrum, iliac crest, sp of T11&T12, sp of L1-L5
spinalis goes from sp to sp extends from L2-C2 good at extending spine, not rotating or flexing
longissimus has 3 sections goes from sacrum & posterior iliac crest to C2 and mastoid process extends, lat flex v.c to same side, rotates to same side thickest of es group
iliocostalis goes from sacrum & medial iliac crest to lower rib angles, lower rib angles to upper rib angles & tp of C7, upper rib angles to tp of C4-C6 strongest to perform lateral flexion
transversospinalis group originate of tp and insert of sp of vert above semispinalis-span 3-6 most vertical multifidi-span 2-4 rotatores-span 1-2 most horizontal
semispinalis extends from T10-occiput attaches to vertebrae except C1 thickest, strongest extender of v.c and head
multifidi extend from sacrum and medial iliac crest to sp of C2 very thick on posterior aspect of sacrum good at extending and rotating
rotatores goes from upper sacrum to sp of C2 good at rotating to opposite side thickest at thoracic spine
transversospinalis group semispinalis-thickest at neck multifidi-thickest at sacrum rotatores-thickest at thoracic a-extend v.c, lat flex to same side, rotate to opposite side
quadratus lumborum a-laterally flex v.c to same side, assists extension of v.c, hip hiker-lifts posterior iliac crest, fixes ribs in forced inhalation and exhalation o-iliolumbar ligament, iliac crest i-12th rib, tp of L1-L4
Created by: lamsee