Musclss Of Thorax, Shoulder And Neck

Question 1

Flexes arm medially

Answer 1

Pectoralis major

Question 2

Supinates scapula anteriorly and down ward (shrugging); abducts arm (raise arm)

Answer 2

Serratus anterior

Question 3

Prime mover; abducts arm (raises arm away from body)

Answer 3

Deltoid

Question 4

Draws scapula laterally

Answer 4

Pectoralis minor

Question 5

Muscle of respiration; aids in INSPIRATION

Answer 5

External intercostals

Question 6

Muscles of respiration; aids in EXPIRATION

Answer 6

Internal intercostal

Question 7

Muscle of respiration; PRIME MOVER in INSPIRATION

Answer 7

Diaphragm

Question 8

Elevates and depresses scapula (shrugging shoulders) and pulls chest forward in forced inspiration

Answer 8

Trapezius

Question 9

Extends arms medially (PRIME MOVER)

Answer 9

Latissimus Dorsi

Question 10

Lateral rotation of humerus, stabilizes shoulder; helps keep head of humerus in glenoid cavity; partially covered by deltoid and trapezius

Answer 10

Infraspinatus

Question 11

Lateral rotation of humerus, stabilizes shoulder; helps keep head of humerus in glenoid cavity; inferior to infraspinatus

Answer 11

Teres minor

Question 12

Extends arms medically; medical rotation of humerus; synergist of Latissimus dorsi

Answer 12

Teres Major