Axillary Nerve Anatomy

The trunk of the. The axillary nerve then passes medially to the surgical neck of the humerus where it divides into three terminal branches.

Ppt Quadrangular Space Structures Passing Through

The axillary nerve which is also called the circumflex nerve emerges from the posterior cord of a network of nerves called the brachial plexus right at the level of the armpit.

Axillary nerve anatomy. The motor branch of the long head of the triceps brachii arises on average. Anaesthesia or loss in sensation of the area of the skin posterior to the deltoid muscle. Mixed sensory and motor nerve.

Wasting of the deltoid muscle. It terminates by dividing into anterior and posterior divisions. Wraps around the surgical neck of the humerus running in the deep deltoid fascia with the posterior circumflex humeral artery.

Supplies the anterior deltoid muscle. Anterior terminal branch winds around the surgical neck of the humerus. Posterior circumflex humeral artery.

Its a major peripheral nerve of the arm carrying fibers from the fifth and sixth cervical vertebrae c5 and c6 which are in near the base of the neck. The axillary nerve is a major peripheral nerve of the upper limb that originates from the brachial plexus. Enters and passes backwards through the quadrangular space.

Injury to the axillary nerve can result in the following. Paralysis of the deltoid and teres minor muscles. The posterior branch lower branch supplies the teres minor and the posterior part of the deltoid.

Divides into anterior and posterior branches within the quadrangular space. It then runs backwards in close relation to the capsule of shoulder joint. It emerges from the posterior cord of the brachial plexus.

Weakness of arm abduction. Posterior terminal branch provides motor innervation to the posterior aspect. Axillary nerve arises in the axilla from posterior cord of brachial plexus behind the third part of axillary artery.

Structure the anterior branch upper branch winds around the surgical neck of the humerus.

Axillary Nerve 3d Anatomy Tutorial