The Arm Anatomy

In brachiating tree swinging primates the arm is unusually long. 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.

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Watch the following video tutorials to learn everything about the bones of the arm.

The arm anatomy. Other important bones in the shoulder include. It is the scaffold of the arm and its main functions include forearm movement motion transmission and passage of neurovascular structures along the upper limb. The upper arm is located between the shoulder joint and elbow joint.

The humerus is the bone of the arm that articulates with the scapula proximally and with the radius and the ulna distally. It contains four muscles three in the anterior compartment biceps brachii brachialis coracobrachialis and one in the posterior compartment triceps brachii. Activities such as lifting weights or heavy boxes require brute strength from the muscles of the arm.

The muscles of the arm and hand are specifically designed to meet the bodys diverse needs of strength speed and precision while completing many complex daily tasks. The term is sometimes restricted to the proximal part from shoulder to elbow the distal part is then called the forearm. In common usage the arm extends to the hand.

In terms of gross anatomy the arm refers to the portion between the shoulder and elbow joints. There are many muscles and ligaments attached to the humerus. Well go over the bones joints muscles nerves and blood vessels that make up the human arm.

A mineral calcium phosphate. The clavicle collarbone meets the acromion in the acromioclavicular joint. In human anatomy the arm is the part of the upper limb between the glenohumeral joint shoulder joint and the elbow joint.

Arm in zoology either of the forelimbs or upper limbs of ordinarily bipedal vertebrates particularly humans and other primates. Anatomy of bones of the arm. The arm is one of the bodys most complex and frequently used structures.

The upper arm bone that extends from the shoulder to the elbow is called the humerus. This is a long bone that helps in supporting and moving the upper arm. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and socket.

The acromion is a bony projection off the scapula. The humerus is divided into 3 parts the round head the narrow neck and the tubercles. The primary protein that makes up bone collagen has a higher tensile strength than steel but it also has a flexibility that allows it to absorb tremendous pressure.

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