Anatomy Of The Lower Arm

The muscles of the flexor group begin from the lower inner edge of the humerus. Anterior compartment there are three muscles located in the anterior compartment of the upper arm biceps brachii coracobrachialis and brachialis.

8 2 Bones Of The Upper Limb Anatomy And Physiology

In this article we shall look at the anatomy of the muscles of the upper arm their attachments innervation and actions.

Anatomy of the lower arm. It can be divided into the upper arm which extends from the shoulder to the elbow the forearm which extends from the elbow to the hand and the hand. The forearm is the area between the wrist and the elbow. On the posterior side of the upper arm is the triceps brachii which acts as an extensor of the forearm at the elbow and the humerus at the shoulder.

In common usage the arm extends to the hand. In human anatomy the arm is the part of the upper limb between the glenohumeral joint shoulder joint and the elbow joint. We will start with the forearm or lower arm.

Well go over all the muscles in your upper arm and forearm as well as explain. The proximal end of the humerus known as the head is a round structure that forms the ball of the ball and socket shoulder joint. It is homologous to the region of the leg.

Teachme anatomy part of the teachme series the medical information on this site is provided as an information resource only and is not to be used or relied on for any diagnostic or treatment purposes. It extends from the elbow to the wrist. Now let us examine the main muscles of the arm anatomy.

Arm anatomy muscles. The muscles of the lower arm are divided into two groups. The term forearm is used in anatomy to distinguish it from the arm a word which is most often used to describe the entire appendage of the upper limb but which in anatomy technically means only the region of the upper arm whereas the lower arm is called the forearm.

The lower arm or forearm bone is the radius. Extending from the shoulder to the elbow the upper arm provides pulling and lifting strength. The radius is long and curved in shape and runs parallel to the ulna.

The function of the radius is to help in movement and supporting the arm. Muscles attached to the radius include. The muscles in the forearm rotate flex and extend the wrist.

The flexor pollicis longus. Additionally the biceps brachii operates as a supinator of the forearm by rotating the radius and moving the palm of the hand anteriorly. It is a long large bone that extends from the scapula of the shoulder to the ulna and radius of the lower arm.

Your arm muscles allow you to perform hundreds of everyday movements from making a fist to bending your thumb. The flexors and the extensors. The flexor digitorum superficialis.

This hinged joint allows the arm to open up to 180 degrees at full extension.

Forearm Anatomy