Brachial Plexus Anatomy

Origin course and relations. The brachial plexus in a nutshell the brachial plexus is a complex intercommunicating network of nerves formed by spinal nerves c5.

Chapter 15 Axillary Brachial Plexus Block Hadzic S

The brachial plexus is a network of nerve fibres that supplies the skin and musculature of the upper limb.

Brachial plexus anatomy. The brachial plexus is a network of nerves formed by the anterior ramus of the lower four cervical nerves and first thoracic nerve c5 c6 c7 c8 and t1. Trunks from the base of the neck these roots then the roots of the brachial plexus unite. This plexus extends from the spinal cord through the cervicoaxillary canal in the neck over the first rib and into the armpit.

This mnemonic describes the order of these subdivisions. It begins in the root of the neck passes through the axilla and runs through the entire upper extremity. The brachial plexus is an arrangement of nerve fibres running from the spine formed by the ventral rami of the lower cervical and upper thoracic nerve roots it includes from above the fifth cervical vertebra to underneath the first thoracic vertebrac5 t1it proceeds through the neck.

The axillary sheath surrounds the axillary vein axillary artery. The brachial plexus has important five parts which are. Divisions the human neck has a.

It is a very important structure that is responsible for cutaneous and muscular intervention of the entire upper limb except for the trapezius muscle which is neurally innervated by the spinal accessory nerve and the skin near the axilla which is innervated by the intercostobrachial nerve. Anatomy of brachial plexus. The construction of the brachial plexus has a well known scheme.

After their short pathway each of these trunks divides to. It supplies all sensory innervation to the upper limb and most of the axilla. Roots these refer to the starting point of the brachial plexus formed by the spinal nerves c5.

A brachial plexus block allows a surgeon to operate on an upper extremity without the use of a general anesthetic when combined with a tourniquet. Roots are formed between the scalenus anterior and scalenus medius muscles by the anterior rami of c5 c8 and t1 nerve roots. The brachial plexus consists of roots trunks divisions cords and terminal branches as it travels from proximal to distal upper limb.

All of the nerves for the upper extremity arise from the brachial plexus. It supplies all motor innervation to the muscles of the upper limb and shoulder. The location of the injection is between the posterior border of the sternocleidomastoid and the clavicle.

Brachial Plexus Wikipedia