The axillary nerve is located at the proximal end, against the shoulder girdle.

Dislocation of the humerus's glenohumeral joint, has the potential to injure the axillary nerve or the axillary artery.

Having passed through this inter muscular gap, the radial nerve continues posteriorly in a medial to lateral fashion on the arm while in conjunction with the axillary artery / brachial artery.

However, a study conducted in 2004 determined that, in 20 cadaveric specimens and 15 surgical dissections on participants, the long head was innervated by a branch of the axillary nerve in all cases.

The axillary nerve or the circumflex nerve is a nerve of the human body, that comes off the of the brachial plexus ( upper trunk, posterior division, posterior cord ) at the level of the axilla ( armpit ) and carries nerve fibers from C5 and C6.

The axillary nerve travels through the quadrangular space with the posterior circumflex humeral artery and vein.

The axillary nerve supplies three muscles ; deltoid ( a muscle of the shoulder ), teres minor ( one of the rotator cuff muscles ) and the long head of the triceps brachii ( an elbow extensor ).

The posterior cord splits inferiorly to the glenohumeral joint giving rise to the axillary nerve which wraps around the anatomical neck of the humerus, and the radial nerve which wraps around the humerus anteriorly and descends along its lateral border.

* The trunk of the axillary nerve gives off an articular filament which enters the shoulder-joint below the subscapularis.

The axillary nerve may be injured in anterior-inferior dislocations of the shoulder joint, compression of the axilla with a crutch or fracture of the surgical neck of the humerus.

An example of injury to the axillary nerve includes axillary nerve palsy.

The nerve descends behind the brachial plexus and the axillary vessels, resting on the outer surface of the Serratus anterior.

The long thoracic nerve can also be damaged during surgery for breast cancer, specifically radical mastectomies that involve removal of axillary lymph nodes.

The deltoid is innervated by the axillary nerve.

The axillary nerve originates from the ventral rami of the C5 and C6 cervical nerves, via the superior trunk, posterior division of the superior trunk, and the posterior cord of the brachial plexus.

While some might argue that, by this logic, humans should also express hairy shoulders given that these body parts would putatively be exposed to similar conditions, the protection of the head, the seat of the brain that enabled humanity to become one of the most successful species on the planet ( and which also is very vulnerable at birth ), was arguably a more urgent issue ( axillary hair in the underarms and groin were also retained as signs of sexual maturity ).

The American Golden Plover is smaller, slimmer and relatively longer-legged than European Golden Plover ( Pluvialis apricaria ) which also has white axillary ( armpit ) feathers.

Pacific Golden Plover is smaller, slimmer and relatively longer-legged than European Golden Plover, Pluvialis apricaria, which also has white axillary ( armpit ) feathers.

They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence.

It can also include cosmetic care of the body and removal of the pubic and axillary hair, and shaving of the facial hair.

This happens mostly in the axillary ( armpit ) region, although the gland can also be found in the areola, anogenital region, and around the navel.

Pain can also be in the side of the neck, the pectoral area below the clavicle, the axillary area, and the upper back ( i. e. the trapezius and rhomboid area ).

They also differ from the related genus Calia ( mescalbeans ) in having deciduous leaves and flowers in axillary, not terminal, racemes.

There were also two local axillary airfields for emergency and overflow landings.

A possible theory being studied now is that these axillary odors are being used to provide information about the immune system.

Approximately 75 % of the lymph from the breast travels to the ipsilateral ( same-side ) axillary lymph nodes, whilst 25 % of the lymph travels to the parasternal nodes ( beside the sternum bone ), to the other breast, and to the abdominal lymph nodes.

Between 38 and 89 % of breast cancer patients suffer from lymphedema due to axillary lymph node dissection and / or radiation.

Wedekind and colleagues found that both men and women prefer the axillary odors of people whose MHC is different from their own.

Pubic hair and axillary ( armpit ) hair can vary in color considerably from the hair of the scalp.

These develop from axillary buds.

Image: Gray810. png | Suprascapular and axillary nerves of right side, seen from behind.

A muscular slip, the axillary arch, varying from 7 to 10 cm in length, and from 5 to 15 mm in breadth, occasionally springs from the upper edge of the latissimus dorsi about the middle of the posterior fold of the axilla, and crosses the axilla in front of the axillary vessels and nerves, to join the under surface of the tendon of the pectoralis major, the coracobrachialis, or the fascia over the biceps brachii.

Image: Gray809. png | The right brachial plexus ( infraclavicular portion ) in the axillary fossa ; viewed from below and in front.

Image: Gray809. png | The right brachial plexus ( infraclavicular portion ) in the axillary fossa ; viewed from below and in front.

File: Gray809. png | The right brachial plexus ( infraclavicular portion ) in the axillary fossa ; viewed from below and in front.

File: Gray810. png | Suprascapular and axillary nerves of right side, seen from behind.

Image: Gray809. png | The right brachial plexus ( infraclavicular portion ) in the axillary fossa ; viewed from below and in front.

Transpulmonary thermodilution uses the Stewart-Hamilton principle, but measures temperatures changes from central venous line to a central arterial line ( i. e. femoral or axillary ) arterial line.

The axillary inflorescence vary in length from insignificant to 1m long, and can carry from a few ( 1-4 ) ( e. g. Dendrobium nobile ) to as many as 100 ( e. g. Dendrobium speciosum ) flowers.

Image: Gray809. png | The right brachial plexus ( infraclavicular portion ) in the axillary fossa ; viewed from below and in front.

In all plumages, the inner flanks and axillary feathers at the base of the underwing are black, a feature which readily distinguishes it from the other three Pluvialis species in flight.

The resulting scar runs from the posterior axillary line ( when placing you open hands on your hips, the thumbs lie along the posterior axillary line.