Muscles of the Arm

muscles of the arm

There are a number of muscles in the arm. The three main groups include the biceps brachii, coracobrachialis, and brachialis. Each muscle has a different purpose. You should understand their function before you attempt to exercise them. In this article, we’ll discuss the biceps brachii.

biceps brachii

The biceps brachii is a muscle in the anterior compartment of the arm. It has a long and short head, which joins to form a common tendon that inserts into the radial tuberosity and bicipital aponeurosis. It is rare to find biceps brachii muscles with more than two heads, but they do exist. The present study documents the occurrence of a supernumerary head in adult cadavers from South India. Twenty adult formalin-fixed cadavers were studied. The morphological characteristics of the biceps brachii were examined, as well as the distribution of a supernumerary head in the human arm.

The biceps brachii muscles are located on the arm, near the axillary artery. They are also connected to the musculocutaneous nerve and the median nerve. These two nerves form a common axon in the arm.


The coracobrachialis is a muscle in the arm. Its origins are obscure, but it was discovered during an anatomical dissection. It has three parts: the coracoid process, the coracoid muscle body, and the medial epicondyle. The coracoid process originates from the coracoid bone, while the rest of the muscle attaches to the medial epicondyle.

The coracobrachialis muscle has two heads: the superficial head and the deep head. The superficial head originates from the coracoid process, while the deep head derives from the lateral side of the short head of the biceps brachii. The two heads are connected via a common part of insertion. The superficial head receives a branch of the musculocutaneous nerve, and the deep head receives another branch.

The coracobrachialis is one of the three anterior muscles of the arm. Its action is antagonistic to that of the Deltoid and other biceps brachii. The Coracobrachialis inserts on the olecranon of the ulna. There are three heads: the long head, the short head, and the superficial head.

ulnar nerve

If you’re experiencing pain in your elbow, your ulnar nerve might be the cause. An irritated nerve will send a shock through your elbow to your ring finger and little finger. This is known as Tinel’s sign, and it can also lead to pain when bending your elbow and wrist.

The ulnar nerve originates from the brachial plexus, near the C8 vertebra. It travels posteriorly down the arm toward the olecranon notch, passing through the firm intermuscular septum. The ulnar nerve also provides sensory supply to the skin of the hand.

Ulnar nerves control the muscles in the arm and help us hold objects. They also control the sensations in parts of our hand. When pressure is placed on the ulnar nerve, it can cause pain, numbness, and tingling. This nerve is located in the elbow and wrist and is responsible for gripping. This nerve can also become trapped in the elbow or wrist. This can cause problems such as Guyon’s canal syndrome. The ulnar nerve also controls the muscles in the hand and forearm.

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