Superficial Muscles Flashcards
What is the origin of the Extensor Carpi Radialis Longus?
Lateral supracondylar ridge of the humerus.
Which muscle inserts at the base of the second metacarpal?
Extensor Carpi Radialis Longus.
True or False: The Extensor Carpi Radialis Brevis originates from the lateral epicondyle of the humerus.
True.
What nerve supplies the Extensor Carpi Radialis Brevis?
Radial nerve.
What action is performed by the Extensor Carpi Radialis Brevis?
Extension and abduction of the wrist.
Fill in the blank: The Extensor Digitorum originates from the _____ epicondyle of the humerus.
lateral.
Which muscle allows for extension of the fingers?
Extensor Digitorum.
What is the insertion point of the Extensor Digitorum?
Extensor expansions of digits 2 to 5.
What is the primary nerve supply to the Extensor Digitorum?
Radial nerve.
What action does the Extensor Digiti Minimi perform?
Extension of the little finger.
True or False: The Extensor Carpi Ulnaris originates from the medial epicondyle of the humerus.
False.
Where does the Extensor Carpi Ulnaris insert?
Base of the fifth metacarpal.
Which nerve supplies the Extensor Carpi Ulnaris?
Radial nerve : posterior interosseuos nerve
What is the action of the Extensor Carpi Ulnaris?
Extension and adduction of the wrist.
What is the origin of the Supinator muscle?
Lateral epicondyle of the humerus and supinator crest of the ulna.
The Supinator muscle is innervated by which nerve?
Radial nerve.
What action does the Supinator perform?
Supination of the forearm.
Which muscle assists in the extension of the thumb?
Abductor Pollicis Longus.
What is the origin of the Abductor Pollicis Longus?
Posterior surface of the radius and ulna, and interosseous membrane.
Where does the Abductor Pollicis Longus insert?
Base of the first metacarpal.
What is the nerve supply to the Abductor Pollicis Longus?
Radial nerve.
What action does the Abductor Pollicis Longus perform?
Abduction and extension of the thumb.
What is the origin of the Extensor carpi radialis Brevis?
By a common tendon from lateral epicondyle of humerus and literally ligament of elbow joint
Which muscle inserts at the base of the proximal phalanx of the thumb?
Extensor Pollicis Brevis.
