muscles p45 action

Question 1

Pectoralis Minor (action)

Answer 1

Action: elevates upper ribs Origin: ribs 3-5 Insertion: coracoid process Innervation: pectoral

Question 2

Serratus Anterior (action)

Answer 2

Action: move scapula forward, rotate scapula

Question 3

External intercostals (action)

Answer 3

Action: elevate rib cage; aid in inspiration

Question 4

Internal Intercostals (action)

Answer 4

Action: depress rib cage; aid in exhalation

Question 5

Diaphragm (action)

Answer 5

Action: primary mover of inspiration, flattens when

Question 6

Rectus Abdominis (action)

Answer 6

Action: flex and rotate vertebral column

Question 7

External Oblique (action)

Answer 7

Action: flex and rotate vertebral column, trunk, and lateral flexion

Question 8

Internal Oblique (action)

Answer 8

Action: flex and rotate vertebral column, trunk, and latral flexion

Question 9

Transverse abdominis (action)

Answer 9

Action: compress abdominal contents

Question 10

Trapezius (action)

Answer 10

Action: extend neck; raise, rotate, and adduct scapula