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Lab

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