Anterior Forearm Muscles - Deep Layer + Review of Superficial Layer

The video provides a comprehensive overview of the anterior forearm muscles, focusing on their anatomy, innervation, and functions. It covers the superficial, intermediate, and deep layers, detailing muscles like brachioradialis, pronator teres, flexor carpi radialis, palmaris longus, and flexor carpi ulnaris. The video also explores flexor digitorum superficialis and profundus, flexor pollicis longus, and pronator quadratus, explaining their roles in wrist and finger movements, as well as their nerve innervations.

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

• Extensor carpi radialis

• Brachioradialis

• Flexor digitorum profundus

• Supinator

What is the primary function of the biceps brachii tendon?

• Inserts on the ulnar tuberosity

• Inserts on the radial tuberosity

• Inserts on the coronoid process

• Inserts on the medial epicondyle

Which nerve innervates the pronator teres?

• Radial nerve

• Musculocutaneous nerve

• Ulnar nerve

• Median nerve

What is the primary action of the flexor carpi radialis?

• Wrist extension

• Wrist flexion and ulnar deviation

• Wrist flexion and radial deviation

• Elbow extension

Where does the flexor digitorum superficialis insert?

• Distal phalanges of digits 2-5

• Metacarpals of digits 2-5

• Middle phalanges of digits 2-5

• Proximal phalanges of digits 2-5

Which joint is NOT flexed by the flexor digitorum superficialis?

• Wrist joint

• Distal interphalangeal joint

• Proximal interphalangeal joint

• Metacarpophalangeal joint

What is the origin of the flexor digitorum profundus?

• Coronoid process of the ulna

• Distal 1/3 of the radius

• Lateral epicondyle of the humerus

• Proximal 3/4 of the ulna

Which muscle is responsible for flexing the distal interphalangeal joints?

• Flexor pollicis longus

• Flexor digitorum superficialis

• Flexor carpi ulnaris

• Flexor digitorum profundus

What is the primary action of the pronator quadratus?

• Supination of the forearm

• Pronation of the forearm

• Flexion of the wrist

• Extension of the elbow

Which nerve innervates the flexor pollicis longus?

• Ulnar nerve

• Anterior interosseous nerve

• Posterior interosseous nerve

• Radial nerve