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Upper Muscles O & I

Lab

QuestionAnswer
Temporalis Origin: temporal bone Insertion: Coronoid process of mandible Action: Elevates mandible
Masseter Origin: Zygomatic arch Insertion: Coronoid process, angle of mandible Action: Elevates mandible
Medial Pterygoid O: Maxilla, palatine, & medial surface of lateral pterygoid plate I: Ramus of the mandible A: Side to side mastication elevates mandible
Lateral pterygoid O: Greater wing of sphenoid and lateral surface of lateral pterygoid plate I: Condylar process of mandible A: Side to side mastication depresses mandible
Digastric O: mental protuberance, mastoid process I: Hyoid bone A: Elevates hyoid
Mylohyoid O: Mandible I: hyoid bone A: elevates hyoid
Sternocleidomastoid O: Sternum and clavicle I: Mastoid process A: Head flexion/rotation
Trapezius O: Superior nuchal line, spinous processes of C7-T12 I: Clavicle, acromion process, and spine of scapula A: Rotates and elevates scapula
Levator scapulae O: Transverse processes of C1-C4 I: Medial border of scapula A:Raises angle of scapula
Rhomboid major O: Spinous processes of T2-T5 I: medial border of scapula A: retracts scapula
Rhomboid minor O: Spinous processes of C7-T1 I: Medial border of scapula A: Retracts scapula
Serratus anterior O: Ribs 1-8 I: Medial border of scapula A:Protracts scapula
Pectoralis minor O: Ribs 3-5 I: Coracoid process of scapula A: Stabilizes scapula
Deltoid O: Clavicle, acromion process and spine of scapula I: Deltoid tuberosity A: Abducts, flexes, and extends shoulder
Coracobrachialis O: Coracoid process of scapula I: Middle medial shaft of humerus A: Adducts humerus
Biceps Brachii O: Supraglenoid tubercle and coracoid process I: Radial tuberosity A: Flexes elbow joint, supinates forearm
Triceps Brachii O: Infraglenoid tubercle and shaft of humerus I: olecranon process of ulna A: Extends and adducts arm
Supraspinatus O: Supraspinous fossa I: Greater tubercle of humerus A: Abducts arm
Infraspinatus O: Infraspinous fossa I: greater tubercle of humerus A: adducts arm
Teres minor O: Lateral border of scapula I: Greater tubercle of humerus A: adducts arm
Subscapularis O: Subscapular fossa I: Lesser tubercle of humerus A: medially rotates arm
Pectoralis major O: Clavicle, sternum, ribs 2-6 I: Intertubercular groove A: adducts humerus
Teres major O: Lateral border and inferior angle of scapula I: Intertubercular groove A: Extend, adducts, and medially rotates arm
Latissimus dorsi O: Spinous processes T7-T12, ribs 8-12, iliac crest, thoracolumbar fascia I: intertubercular groove A: primarily extends arm, adducts/rotates arm
Brachialis O: anterior shaft of humerus I: Coronoid process of ulna A: Flexion at elbow joint
Brachioradialis O: lateral supracondylar ridge of humerus I: styloid process of radius A: flexes/adducts forearm
Supinator O: lateral epicondyle of humerus and supinator crest I: lateral surface of radius A: supinates forearm and wrist
Pronator teres O: medial epicondyle of humerus and coronoid process of ulna I: lateral surface of radius A: pronates forearm and wrist
Created by: punkaloo
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