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LB muscles, anatomy

223 Exam 2

QuestionAnswer
the muscles of the quadriceps femorus group Rectus femoris, Vastus lateralis, Vastus intermedius, Vastus medialis
abdominal muscles (4) superficial to deep external oblique, internal oblique, rectus abdominis, tranversus abdominis
Muscles & function of the erector spinae group (medial to lateral): Spinalis, Longissimus; Iliocostalis function: extension
Muscles of the hamstring location: posterior thigh semimembranosus, semitendinosus, biceps femoris
muscles of the quadriceps Function? rectus femoris, vastus lateralis, vastus intermedius, vastus medialis function: lifting - extending leg
two other important muscles of anterior thigh sartorius, iliopsoas
Deep posterior back muscles, movements Semispinalis(largest, mid thorax to skull base), multifidi (deep fasciculi 1-3 motion segments all up back sacrumm to C2), rotatores (well-defined only in thoracic region) Overall F: extends muscle movement of vertebrae
Function & location of Quadratus lumborum flexes trunk laterally, located in lumbar region - cause of back pain if tight
function & location of psoas & Illiacus flexors of hip, can cause back pain if tight
what are the 3 major nerve plexus? Brachial (C5-8, T1) Lumbar (L1-4); Sacral (L4-S4);
Nerves of the Brachial plexus C5-biceps, C6-wrist extensors, C7-triceps, C8-long finger flexors, T1 - intrinsics
Nerves of the Lumbar Plexus Femoral - saphenous, Obturator, Lateral femoral cutaneous
Nerves of the Sacral Plexus Posterial femoral cutaneous, Superior gluteal, Interior gluteal nerve
Created by: sherryama