Radial muscles of the forearm

This tutorial covers the radial muscles of the forearm, focusing on the brachioradialis, extensor carpi radialis longus, and extensor carpi radialis brevis. It explains their origins, insertions, and innervation by the radial nerve. The video also provides visual aids and encourages further learning through additional resources.

Which of the following is NOT one of the radial muscles of the forearm?

• Extensor carpi radialis longus

• Flexor carpi ulnaris

• Brachioradialis

• Extensor carpi radialis brevis

Where does the brachioradialis muscle primarily originate?

• Coracoid process

• Lateral supracondylar ridge of the humerus

• Medial epicondyle of the humerus

• Olecranon process

What is the insertion point of the brachioradialis muscle?

• Lateral epicondyle of the humerus

• Base of the third metacarpal

• Styloid process of the radius

• Base of the second metacarpal

The extensor carpi radialis longus muscle inserts on which bone?

• Styloid process of the ulna

• Base of the second metacarpal

• Lateral epicondyle of the humerus

• Base of the third metacarpal

Which muscle lies underneath the brachioradialis?

• Extensor carpi radialis brevis

• Pronator teres

• Extensor carpi radialis longus

• Flexor carpi radialis

What is the primary difference between the extensor carpi radialis longus and brevis?

• Their insertion points

• Their origin points

• Their innervation

• Their length and thickness

Which nerve supplies the radial muscles of the forearm?

• Musculocutaneous nerve

• Ulnar nerve

• Radial nerve

• Median nerve