Podcast
Questions and Answers
What is the action of the flexor digitorum superficialis?
What is the action of the flexor digitorum superficialis?
Where does the flexor pollicis longus originate?
Where does the flexor pollicis longus originate?
What is the insertion point of the extensor carpi radialis longus?
What is the insertion point of the extensor carpi radialis longus?
Which muscle is responsible for forearm supination?
Which muscle is responsible for forearm supination?
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Where does the extensor indicis originate?
Where does the extensor indicis originate?
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What is the insertion point of the flexor carpi ulnaris?
What is the insertion point of the flexor carpi ulnaris?
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Which muscle is responsible for wrist expansion?
Which muscle is responsible for wrist expansion?
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What is the insertion point of the extensor carpi radialis brevis?
What is the insertion point of the extensor carpi radialis brevis?
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Study Notes
Flexor Digitorum Superficialis
- Flexes the middle phalanges of the four fingers (index, middle, ring, and little)
Flexor Pollicis Longus
- Originates from the anterior surface of the radius and the interosseous membrane
Extensor Carpi Radialis Longus
- Inserts on the base of the second metacarpal bone
Forearm Supination
- Supinator muscle is primarily responsible for supination of the forearm
Extensor Indicis
- Originates from the posterior surface of the ulna, distal to the extensor digitorum
Flexor Carpi Ulnaris
- Inserts on the pisiform bone and the hook of the hamate bone
Wrist Expansion
- Extensor carpi radialis longus and brevis muscles along with other extensor muscles of the wrist are responsible for wrist expansion
Extensor Carpi Radialis Brevis
- Inserts on the base of the third metacarpal bone
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Description
Test your knowledge of the origins, insertions, and actions of the anterior forearm flexor muscles. Identify the muscles based on their origins, insertions, and actions.
