Muscles of the Antibrachial Region and Pollix

Vocabulary flashcards covering the appendicular muscles of the antibrachial region, including wrist extensors, pronators, supinators, and muscles controlling the pollix.

Wrist extensors

Muscles located on the posterior side of the antibrachial region, which include the extensor karpy radiialis longus, extensor karpy radiialis brevis, extensor digtorum, and extensor karpy ulnaris.

Pronator terries

A muscle involved in pronation that is remembered using the pass fail pass fail pneumonic.

Pronator quadratus

A muscle responsible for pronation located at the distal end of the radius and the ulna.

Brachioraiialis

A muscle on the lateral side that runs from the brachial region to the radius, assists with elbow flexion, and serves as an important anatomical landmark separating the anterior wrist flexors from the posterior wrist extensors.

Extensor karpy radiialis longus

A long extensor located lateral to the extensor karpy radiialis brevis on the radial side that extends the wrist and assists in radial flexion of the wrist.

Radial flexion

The movement of flexing the wrist towards the radial side laterally while in anatomical position.

Extensor karpy radiialis brevis

A wrist extensor located medial to the extensor karpy radiialis longus that helps to extend the wrist by bending it backwards or straightening it out.

Extensor digtorum

A muscle that extends the digits by extending the wrist, the metacarpo falangial joints, and the interfallangial joints.

Metacarpo falangial

The joints where your digits meet your hand.

Interfallangial

The joints that correspond to the knuckles on your fingers.

Extensor karpy naris

A muscle on the medial side with the ulna in the posterior antibrachium that helps flex the wrist and fixes the wrist during hand gripping or when the fist is clenched.

Supenator

A muscle found deeper to the wrist extensors that supenates the forearm by turning the hands anteriorly or superiorly.

Anconius

A muscle located on the posterior part of the elbow that acts like an elbow patch and helps to extend the elbow.

Pollix

The thumb, which features opposable movement controlled by specialized muscles such as the flexor policus longus, abductor policus longus, extensor policus brevis, and extensor policus longus.

Abductor policus longus

A thumb muscle that abducts the polix in the frontal or palmer plane anteriorly and extends the pollock at the carpomacarpal joint.

Carpomacarpal joint

The joint region where the wrist meets the hand.

Extensor policus longus

A muscle that extends all the way to distal failins one and functions to extend the polix, metacarpal one, and proximal failins one.

Extensor policus brevvis

A shorter muscle compared to the extensor policus longus that helps to extend metacarpal one and the proximal failings of the polix.