Main muscles of the upper limb

This tutorial explores the main muscles of the upper limb, including the shoulder, arm, forearm, and hand. It details the functions and anatomical relations of these muscles, focusing on the deltoid, rotator cuff, biceps, triceps, and various forearm and hand muscles. The video also covers clinical aspects of rotator cuff injuries, providing insights into symptoms and treatments. The tutorial concludes with a summary of the key points discussed.

Which muscle is primarily responsible for abducting the arm at the shoulder joint?

• Teres Minor

• Supraspinatus

• Deltoid

• Infraspinatus

What is the primary function of the rotator cuff muscles?

• Rotation and stabilization of the shoulder

• Extension of the arm

• Abduction of the fingers

• Flexion of the forearm

Which muscle is NOT part of the anterior compartment of the arm?

• Brachialis

• Coracobrachialis

• Triceps Brachii

• Biceps Brachii

The triceps brachii muscle is primarily responsible for which action?

• Flexion of the elbow

• Extension of the elbow

• Abduction of the arm

• Rotation of the forearm

Which muscle is part of the superficial anterior compartment of the forearm?

• Flexor Carpi Radialis

• Extensor Digitorum

• Brachioradialis

• Supinator

What is the main action of the posterior forearm muscles?

• Abduction of the thumb

• Pronation of the forearm

• Extension of the wrist

• Flexion of the wrist

Which group of muscles is responsible for fine motor movements in the hand?

• Extrinsic muscles

• Intrinsic muscles

• Rotator cuff muscles

• Forearm extensors

The thenar muscle group primarily acts on which part of the hand?

• Little finger

• Wrist

• Thumb

• Middle finger

What is a common cause of rotator cuff strains?

• Improper diet

• Lack of exercise

• Overuse of the rotator cuff

• Genetic factors

Which treatment is NOT typically used for rotator cuff strains?

• Ice

• Surgical intervention

• Antibiotics

• Rest