11-26-07 anatomy notes

11-26-07 anatomy notes - 11-26-07 anatomy notes1.Muscles of

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Unformatted text preview: 11-26-07 anatomy notes1.Muscles of Masticationa.Masseter (raises mandible when it contracts)i.(O)-Zygomatic Archii.(I)-angle and ramus of mandibleb.Temporalisi.(O)-temporalis fossaii.(I)-coronoid process and mandiblei.raises and retracts the mandiblec.Medial Pterygoid Muscles (aka internal pterygoid)-raises mandiblei.(O)-pterygoid process of the sphenoidii.(I)-angle and ramus of mandiblei.behind mandibled.Lateral Pterygoid aka external pterygoid-lowers mandiblei.(O)-pterygoid process of sphenoid and great wing of sphenoidii.(I)-mandibular condylee.Buccinator Musclei.(O)-alveolar processes of the maxilla and mandibleii.(I)-orbicularis musclei.compresses cheeks in a kissing motion2.Movement of Heada.Sternocleidomastoid Musclei.(O)-sternum and clavicleii.(I)-mastoid process of temporal boneiii.contraction of one:i.flexion of cervical vertebrae laterally toward side of contractioniv.contraction of both:i.flex cervical vertebrae anteriorlya.pulls head toward feetb.Splenius Capitis Musclei.Is a deep muscle, covered by trapeziusii.(O)-spinous processes of 7thcervical, 1st-4ththoracic vertebrae, and nuchal ligamentsiii.(I)-occipital bone and mastoid processiv.contraction on one side: i.head rotated toward side of contractionv.contraction of both at same time:i.flex cervical vertebrae posteriorly and extends heada.head is drawn backward3.Movement of Shoulder Girdlea.Scapula/Shoulder Girdlei.Levator Scapulae (pm)i.Elevation of scapulaii.(O)-1st-4thcervical vertebraeiii.(I)-superior angle of scapulab.Rhomboideus Major Musclei.Rhomboideus Major (syn)ii.(O)-2nd-5ththoracic vertebrae are originsiii.(I)-vertebral border, scapulai.raising, adducting, and laterally rotating the scapulac.Rhomboideus Minori.Rhomboideus Minor (Syn)ii.(O)-7thcervical and 1stthoracic vertebraeiii.(I)-vertebral border of scapula at spinei.elevates scapula, adducts and laterally rotates scapulad.Pectoralis Minori.Depresses scapulaii.(O)-3rd-5thribsiii.(I)-corocoid process of scapulae.Skini.Serratus anteriori.Abducts scapulaa.Moves scapula away from midline and laterallyii.(O)-1st-8thribsiii.(I)-vertebral border of scapula, behind itiv.Left-post. viewv.Right-lateral viewf.Trapeziusi.Adductioni.Scapula drawn away from midline, away from Humerusii.(O)-occipital bone, nuchal ligament, 7thcervical and all thoracic vertebraeiii.(I)-clavicle, acromion, and spine of scapulaiv.Whole muscle contractioni.adducts scapula and pulls it toward midlinev.Upper portion contractioni.Extends headvi.Middle portion contractioni.Elevates scapulavii.Lower portion contractioni.Depresses scapula4.Movement of Humerus at Shoulder Jointa.Corachobra Musclei.Flexion of armii.Coracobrachialis (PM)iii.(O)-coracoid processiv.(I)-middle humerusb.Pectoralis Majori.Pectoralis Major (SYN for flexion of arm)ii.(O)-clavicle, sternum, costal cartilagesiii.(I)-greater tubercle of Humerusc.Teres Majori.Extension of armi.If arm is flexed, teres major returns it to its anatomical position...
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This note was uploaded on 04/02/2008 for the course BIOL 20204 taught by Professor Barcellona during the Fall '07 term at TCU.

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11-26-07 anatomy notes - 11-26-07 anatomy notes1.Muscles of

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