10 Questions
Which muscle originates from the upper 2/3 of the lateral supracondylar ridge of the humerus?
Brachioradialis
What is the action of the brachioradialis muscle?
Flexion of the elbow at midprone position
Which muscle is responsible for extending the thumb?
Extensor pollicis brevis
Which muscle originates from the front of the lateral epicondyle?
Common extensor origin
What is the nerve supply of the extensor carpi radialis longus muscle?
Radial nerve
Which muscle is responsible for extending the index finger?
Extensor indicis
What is the insertion point of the brachioradialis muscle?
Base of styloid process of radius
Which muscle is responsible for abduction of the thumb?
Abductor pollicis longus
What is the action of the extensor pollicis longus muscle?
Extension of the thumb
Which muscle is located in the deep layer of the forearm?
Supinator
Test your knowledge of the muscles, bones, and movements of the forearm and hand. Identify the muscles responsible for thumb and finger movements, and their points of insertion. Learn about the anatomy of the radius, ulna, and metacarpal bones.
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