Muscles of the Arm – Anconeus, Biceps Brachii, Coracobrachialis, and Brachialis

muscles of the arm

If you are looking for a workout program to increase your strength, you should consider targeting the muscles of the arm. These are the Anconeus, Biceps brachii, Coracobrachialis, and Brachialis. If you’re not sure which one to focus on, read our articles on each of these muscles. Then you’ll be well-equipped to start your workout. By the time you’re done, you’ll feel stronger than ever.


Anconeus muscle electrical activity increases during elbow extension and flexion. This muscle contributes significantly to arm motion during the flexion-extension cycle. The relative electrical activity of biceps and triceps brachii was not affected by anconeus blockade. In addition, the work performed at the elbow remained the same when the muscle was blocked. Furthermore, elbow kinematics were not changed after anconeus blockade.

Biceps brachii

Biceps brachii are a pair of muscle groups in the upper arm. They are located in the forearm and extend to the elbow. There are three heads of the biceps brachii; the third represents the long head of the coracobrachialis. Supernumerary heads of the biceps brachii are thought to enhance strength in elbow flexion and exaggerate the kinematics of biceps brachii. However, their presence may cause misinterpretation during surgical procedures and interfere with the course of MCN.


The coracobrachialis muscle is split into two parts, the superficial head and the deep head. The deep head attaches to the medial border of the biceps brachii muscle, while the superficial head arises from the short head of biceps brachii. The musculocutaneous nerve passes through the middle of both heads. Both parts of the coracobrachialis are derived from the musculocutaneous nerve.


Brachialis muscles of the arm are synergistic muscles that contribute to specific movements over multi-joint systems. The activity pattern of these muscles may depend on the positions of the distal and proximal joints. This study explores the relationship between the biomechanical advantages of biceps brachii and hand position. It evaluated the activity of 16 healthy individuals during elbow flexion in different hand positions. sEMG of the brachioradialis and biceps brachii were recorded during each movement at a rate of 20deg/s. Furthermore, the kinematics of the elbow flexion movement were recorded to identify the biceps brachii’s role in the pronated hand position.

Supinator muscle

If you have overused your supinator muscle, you may notice pain at the lateral elbow and forearm. These pains may be caused by entrapment of the deep radial nerve or trigger point activation. This condition can lead to poor joint mechanics. Supinator trigger points often refer pain to the lateral elbow or the web of the thumb on the dorsal side. Fortunately, there are many ways to treat these pains, including massage.

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