Bones and Landmarks
What landmark do you identify in order to locate the carpal bones?
Flexor Wrist crease
Which is the origin of the flexor digitorum profundus?
Anterior and medial surfaces of proximal 3/4 of ulna
Will adduction of the wrist lengthen or shorten the fibers of extensor carpi radialis longus and brevis?
Lengthen
Name an action of flexor carpi radialis.
AB-duct the wrist
What is the origin of extensor carpi radialis longus?
Distal 1/3 of the lateral supracondylar ridge of the humerus
What bone shaft is prominent in the forearm?
The Ulna
Which muscle runs between the pisiform and the medial epicondyle of the humerus?
Flexor carpi ulnaris
True of false:
Extensor Carpi Ulnaris ADducts the wrist
True
What is an action of flexor digitorum profundus?
Wrist flexion
Flexion of the 2nd-5th fingers
What is the insertion of extensor carpi radialis longus?
Base of the 2nd metacarpal
What are the phalanges?
The fingers
Where does the common flexor tendon originate?
Medial epicondyle of the humerus
Extensor Digitorum helps to extend the wrist...Ture or False
True
What is the action of Pronator Teres-name it's origin and insertion.
Pronates the forearm
O: Common Flexor Tendon
I: Middle of Lateral Surface of radius
What is the insertion of the extensor carpi radialis brevis?
Base of the 3rd metacarpal
Where is the styloid process of the radius located?
At the distal end of the radius
What is the insertion of flexor digitorum superficialis?
sides of middle phalanges of 2nd-5th fingers
Wrist ABduction shortens the fibers of Extensor Carpi Ulnaris
False
It ADducts the wrist
What is the action of Pronator Quadratus and what is it's Origin and Insertion?
Pronates the forearm
O: Anterior surface of the distal 1/4 of the ulna
I: Anterior, lateral surface of the distal radius
What is the origin of palmaris longus?
common flexor tendon from medial epicondyle of humerus
Which is the proper name for the thumb?
Pollux
Brachialis is a strong elbow flexor that is located here_______
Deep to biceps brachii
If you are playing the piano, and or typing on a keyboard, what muscle is mainly contracting?
Extensor digitorum
What is the action of the supinator, and what are it's Origin and Insertion?
Supinates the forearm
O: Lateral epicondyle of humerus, radial collateral ligament, annular ligament and supinator crest of ulna
I: Just below the radial tuberosity aka. lateral, posterior, and anterior surfaces of the proximal 1/3 of the radius
What is the insertion of the flexor carpi ulnaris?
pisiform, hook of the hamate, and base of the 5th metacarpal