Lab

Question Answer
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

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