Muscles That Move Arm

Question 1

Shoulder Joint

Answer 1

Glenohumeral joint (shoulder joint) consists of the attachment of humerus bone to scapula

Ball and socket joint

Responsible for 120degrees of motion (highly mobile, less stable)

Question 2

Arms raised out to side

Answer 2

Shoulder abduction

Deltoid: all fibers and supraspinatus

Question 3

Arms lowered to side and across body

Answer 3

Shoulder Addiction

Pectoralis major and latissimus dorsi

Question 4

Arm out front

Answer 4

Shoulder flexion

Pectoralis major, and anterior fibers of the deltoid

Question 5

Arm lifted behind or down in front

Answer 5

Shoulder extension

Latissimus dorsi, teres major (“little lat”)

Question 6

Arm rotated so elbow faces forward

Answer 6

Internal shoulder rotation

Subscapularis
Latissimus dorsi and pectoralis major

Question 7

Elbow faces backward

Answer 7

External rotation

Infraspinatus and teres minor

Question 8

Move arm up and out to the side

Answer 8

Horizontal abduction

Latissimus dorsi and posterior fibers of deltoid

Question 9

Move arm up and across body

Answer 9

Horizontal adduction

Pectoralis major and anterior fibers of deltoid

Question 10

Elbow and wrist joints

Answer 10

Elbow joints: Humerus, radius, and ulna bones

Wrist joints: distal ends or radius, ulna, and carpal bones

Question 11

Bent elbow

Answer 11

Elbow flexion

Biceps brachii

Question 12

Straightened elbow

Answer 12

Elbow extension

Triceps brachii

Question 13

Palm bent towards forearm

Answer 13

Wrist flexion

Wrist flexors

Question 14

Bend back of the hand towards forearm

Answer 14

Wrist extension

Wrist extensors