ANATOMY EXAM 2 (ACTUALLY CLASS)

ANATOMY EXAM 2 (ACTUALLY CLASS)
Sternocleidomastoid Origin - correct answer Sternum, clavicle (two heads)
Sternocleidomastoid Insertion - correct answer mastoid process
Sternocleidomastoid Action - correct answer contralateral rotation, ipsilateral side-bending,
bilateral contraction flexes the neck
Trapezius Origin - correct answer external occipital protuberance, s[inous processes of C1-C6,
C7-T12
Trapezius Insertion - correct answer posterolateral 1/3 of clavicle, acromion, spine of scapula
Trapezius Action Upper Fibers - correct answer Extension of neck, laterally flexes neck (side-
bending)
Trapezius Action middle fibers - correct answer retract scapula
Trapezius Action lower fibers - correct answer downward rotation/depression of scapula
levator scapulae origin - correct answer transverse processes of cervical vertebrae
levator scapulae insertion - correct answer superior angle of scapula
levator scapulae action - correct answer elevates scapula
Rhomboid minor origin - correct answer spinous processes of C6-C7
Rhomboid minor insertion - correct answer medial border of scapula (above spine)
Rhomboid minor action - correct answer retracts, slightly elevates, rotates, and fixes scapula
Rhomboid major origin - correct answer spinous processes of T1-T4
Rhomboid major insertion - correct answer medial border of scapula (below spine)
Rhomboid major action - correct answer retracts, rotates, and fixes scapula
serratus anterior origin - correct answer ribs 1-8
serratus anterior insertion - correct answer anterior surface of medial border of scapula
serratus anterior action - correct answer rotates and protracts scapula; elevates ribs
pectoralis minor origin - correct answer 3-5 ribs
pectoralis minor insertion - correct answer coracoid process of scapula
pectoralis minor action - correct answer protracts and depresses scapula
pectoralis major origin - correct answer clavicle, sternum
pectoralis major insertion - correct answer Lateral crest of intertubercular groove

, ANATOMY EXAM 2 (ACTUALLY CLASS)
pectoralis major action - correct answer flexes humerus at GH joint adducts and medially
rotates humerus at GH joint, extends humerus from a flexed position
Latissimus Dorsi insertion - correct answer Medial crest of intertubercular groove
Latissimus Dorsi action - correct answer extends humerus at GH joint adduct and medially
rotates arm at GH joint
Deltoid origin - correct answer clavicle, acromion processes, scapular spine
Deltoid insertion - correct answer deltoid tuberosity of humerus
Deltoid action - correct answer flexes and extends humerus at GH joint, adducts humerus,
Medially and laterally rotates humerus at GH joint.
Coracobrachialis origin - correct answer coracoid process of scapula
Coracobrachialis insertion - correct answer midshaft of humerus
Coracobrachialis action - correct answer flexes and adducts arm at GH joint
Supraspinatus origin - correct answer supraspinous fossa
Supraspinatus insertion - correct answer greater tubercle of humerus
Supraspinatus action - correct answer abducts arm at GH joint, hold head of humerus in place
infraspinatus origin - correct answer infraspinous fossa
infraspinatus insertion - correct answer greater tubercle of humerus (below supraspinatus)
infraspinatus action - correct answer lateral rotation of arm at GH joint, hold head of humerus
in place
Teres Minor origin - correct answer lateral border of scapula
Teres Minor insertion - correct answer greater tubercle of humerus (below infraspinatus)
Teres Minor action - correct answer laterally rotates arm at GH joint, hold head of humerus in
place
Subscapularis origin - correct answer subscapular fossa
Subscapularis insertion - correct answer lesser tubercle of humerus
Subscapularis action - correct answer medially rotates arm at GH joint, hold head of humerus
in place
teres Major origin - correct answer inferior, lateral angle of scapula
teres Major insertion - correct answer Medial crest of intertubercular groove