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The axillary nerve has both a motor and a sensory distribution of innervation. It has motor fibres that innervate the deltoid muscle , acting as an abductor, flexor and extensor at the shoulder joint, as well as the teres minor muscle , allowing lateral rotation of the glenohumeral joint.
The axillary nerve is a major peripheral nerve of the upper limb. In this article, we shall look at the applied anatomy of the nerve - its anatomical course, motor functions and cutaneous innervation. We shall also consider the clinical correlations of damage to the axillary nerve.
The axillary nerve or the circumflex nerve is a nerve of the human body, that originates from the brachial plexus (upper trunk, posterior division, posterior cord) at the level of the axilla (armpit) and carries nerve fibers from C5 and C6.
What is the function of the axillary nerve? The axillary nerve helps you move muscles in your upper limbs, near your shoulder. It also provides sensation to this area, including: Pain. Position. Temperature. Touch. Which muscles are innervated by the axillary nerve? Deltoid, which allows you to lift your arm.
The axillary nerve functions as both a motor nerve (dealing with movement) and a sensory nerve (dealing with sensation, such as touch or temperature). Motor Function As a motor nerve, the axillary nerve innervates three muscles in the arm.
damage to nerve with a muscle split will denervate the anterior deltoid. terminates in small cutaneous branches supplying the anterior and anterolateral shoulder. posterior branch. supplies the teres minor and posterior deltoid muscles.
The axillary nerve begins at the ventral rami of C5 and C6 spinal nerves and continues as the smaller branch of the posterior cord of the brachial plexus. It innervates the deltoid and teres minor muscles via the anterior and posterior branches, respectively.