Motions & Major Movers

Question 1

What muscles are involved in flexion of the shoulder?

Answer 1

anterior deltoid, pectoralis major, coracobrachialis

[Work together to lift the arm forward]

Question 2

Which muscles are responsible for flexion of the elbow?

Answer 2

biceps brachii, brachialis, brachioradialis

[Contract to bend the arm at the elbow joint]

Question 3

What muscles are involved in extension of the shoulder?

Answer 3

posterior deltoid, latissimus dorsi, teres major and minor

[Help to move the arm backward]

Question 4

Which muscle is primarily responsible for extension of the elbow?

Answer 4

triceps brachii

This muscle is essential for straightening the arm.

Question 5

What muscles are involved in abduction of the shoulder?

Answer 5

deltoid, supraspinatus, trapezius, serratus anterior

These muscles help to lift the arm away from the body.

Question 6

Which muscles are responsible for adduction of the shoulder?

Answer 6

latissimus dorsi, pectoralis major, subscapularis, teres major, teres minor, infraspinatus, long head of triceps, coracobrachialis

These muscles work together to pull the arm toward the body.

Question 7

What muscles are involved in lateral rotation of the arm?

Answer 7

infraspinatus, teres minor, posterior deltoid

These muscles allow the arm to rotate outward.

Question 8

Which muscles are responsible for medial rotation of the arm?

Answer 8

subscapularis, latissimus dorsi, pectoralis major, teres major, anterior deltoid

These muscles facilitate the inward rotation of the arm.