ANAT 1615 Muscles Test Detailed Notes for Exam #3

ANAT 1615 Muscles Test Detailed Notes for Exam #3 - lecture...

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Unformatted text preview: lecture and Reading assignments Reading:Intro:26-38; Ch.4:466-477; Ch.6:694-695; Ch.8:1001-1008; Ch1:80-82; Ch.2:296-299 Introduction to Muscle A)Back muscle groups vs muscle layers 1.Superficial muscle group of the back:(layers 1 & 2) (attachments, innervation) a)Trapezius m. • O= EOP, SP of C1-T12, lig nuchea and supraSP lig • I=lat 1/3 clavicle, acromion, scapula spine • A=elevate scapula, retracts scapula, up or down rotation of scapula • Innervations= CN XI spinal accessory (motor), C3-C4 SN (sensory) • Sup, middle, inf fibers • Hypomere---ventral prim ramus b)Latissimus Dorsi m. • O=SP T7-L5, iliac crest, lower 3-4 ribs, 1 st 2-3 segments • I=lateral lip of intertubercular groove • A=add humerus, rot humerus, ext humerus down rot scapula • Innervations=C6-8 • Hypomere, ventral prim rami • Thoracodorsal lumbar apornerosis—attaches LD to vert c)Levator Scapulae m. • O=TP C1-C4 • I=sup angle scapula and spine • A=elevate scapula, extend and lat flex head • Innervations=C3-C4, C5 • Deep to LD • hypomere d)Rhomboid Minor m. • O=SP of C7 & T1, lig nuchae, supraSP lig • I= medial margin of the scapula at the medial angle • A=retract scapula, after rotated it pulls it back • Innervations=C5=dorsal scapular nerve • Deep to LD • hypomere e)Rhomboid Major m. • O= SP of T2-T5 • I= medial scapula from the scapular spine to the inferior angle • A=retract scapula, pulls medially back into place • Innervations=C5 • Hypomere 2.Intermediate muscle group of the back a)Serratus Posterior Superior • O=SP of C7-T3 • I= sup border of ribs 2-5 • A=elev ribs--inspir • Innervations=ventral prim rami of T1-3 • hypomere b)Serratus Posterior Inferior • O=SP of T11-L2 • I= inf border of last 4 ribs • A=ribs down and back—expire, fixes ribs • Innervations=vent prim rami T10-12 3.THORACOLUMBAR FASCIA • Continuous with supraSP lig • Separates sup from deep back muscles • Fascia surrounds muscle and up efficiency and power o Keep muscle going in one direction ) 4.deep muscle group of the back (Layers 4,5 & 6) (attachments, function & innervation_ • Named by sup attachment • Innerv by dorsal prim ramus • Epimere a)Spinotransverse group • Most superficial deep back muscles • Epimere and dorsal prim ramus 1)Splenius Capitis • O=SP C3-T3, lower lig nuchae • I= superior nuchal line, mastoid proc • A= o Bilat=extend head and neck o Unilat=rotate and lat bend head and neck to same side • Innervations=DPR 2)Splenius Cervicis • O=SP of T3-T6 • I= TP of C2-C4 •...
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This note was uploaded on 11/21/2011 for the course ANAT 1615 taught by Professor Samueldemons during the Fall '10 term at Life Chiropractic College West.

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ANAT 1615 Muscles Test Detailed Notes for Exam #3 - lecture...

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