Lab 1 Muscle

Question 1

Origin of Sternocleidomastoid

Answer 1

Clavicle and Manubrium

Question 2

Insertion of Sternocleidomastoid

Answer 2

Mastoid process of the Temporal bone

Question 3

Action of Sternocleidomastoid

Answer 3

Flexion and rotation

Question 4

Origin of Trapezius

Answer 4

Occipital protuberance(upper), C7-T12(middle), Spinous process

Question 5

Insertion of Trapezius

Answer 5

Clavicle, accordion process and spine of scapula

Question 6

Action of Trapezius

Answer 6

Upper: Extends head, elevates shoulder girdle Middle: Retracts and stabilizes scapula Lower: Depresses scapula and shoulder girdle

Question 7

Origin of Levator Scapula

Answer 7

C1-C4 transverse process

Question 8

Insertion of Levator Scapula

Answer 8

Superior angle of scapula

Question 9

Action of Levator Scapula

Answer 9

Elevates scapula

Question 10

Origin of Rhomboid Minor

Answer 10

C7-T1 spinous process

Question 11

Insertion of Rhomboid Minor

Answer 11

Medial border of scapula

Question 12

Action of Rhomboid Minor

Answer 12

Scapular Retraction

Question 13

Origin of Rhomboid Major

Answer 13

T2-T5 spinous process

Question 14

Insertion of Rhomboid Major

Answer 14

Medial border of scapula

Question 15

Action of Rhomboid Major

Answer 15

Scapular Retraction

Question 16

Origin of the Pectoralis Minor

Answer 16

Ribs 3-5

Question 17

Insertion of the Pectoralis Minor

Answer 17

Coracoid process of scapula

Question 18

Action of Pectoralis Minor

Answer 18

Depresses scapula; elevates 3-5 ribs

Question 19

Origin of Serratus Anterior

Answer 19

Ribs 1-8

Question 20

Insertion of Serratus Anterior

Answer 20

Inferior angle and medial border of scapula

Question 21

Action of Serratus Anterior

Answer 21

Scapular Protraction