1 天前 · Five major nerves extend from the brachial plexus into the arm: the axillary, musculocutaneous, median, radial, and ulnar nerves. Each of these nerves carries information in the form of nerve impulses to and from a particular region of the arm and hand.

The brachial plexus is a group of nerves that control the muscles of the shoulder, arm, forearm, and hand. These same nerves also provide sensations (feeling) of the whole upper limb. There are five components of the brachial plexus: roots, trunks, divisions, cords, and branches.

There are 6 topics covered in the nerves of the upper limb, an overview of the brachial plexus and a more in-depth look into it’s 5 main branches: axillary, musculocutaneous, median, radial, and ulnar nerves. The brachial plexus is a collection of nerve fibres that supply motor and sensory innervation to the upper limb.

2024年3月13日 · The arm is the region of the upper extremity extending between the shoulder and elbow joints. The nerves found within the arm are terminal branches of the brachial plexus and serve to innervate muscles of the upper extremity and transmit sensory information to the higher processing centers of the brain.[1]

2023年10月30日 · In the shoulder and arm, the brachial plexus gives rise to two nerves: When the brachial plexus is injured, these nerves are affected and some interesting clinical syndromes can be observed. The main artery in the shoulder is the axillary artery.

Cutaneous innervation of the upper limbs is the nerve supply to areas of the skin of the upper limbs (including the arm, forearm, and hand) which are supplied by specific cutaneous nerves. Modern texts are in agreement about which areas of the skin are served by which cutaneous nerves, but there are minor variations in some of the details.

2023年7月25日 · It consists of three sections: the upper arm, forearm, and hand. It extends from the shoulder joint to the fingers and contains 30 bones. It also consists of many nerves, blood vessels (arteries and veins), and muscles. The nerves of the arm are supplied by one of the two major nerve plexus of the human body, the brachial plexus.

Three main nerves run past the elbow and wrist to the hand. Median nerve. This nerve passes down the inside of the arm and crosses the front of the elbow. At the wrist it goes through a "tunnel"-called the carpal tunnel-made up of the wrist bones and a tough band of connective tissue (ligament).

2016年7月24日 · There, five nerves emerge and pass down the limb to supply all of the structures in the arm, forearm and hand. Traction injuries to the upper limb can tear the roots from the spinal cord. If all of the roots are involved, upper limb function is lost. The brachial plexus is also vulnerable to pressure in the axilla.

2016年2月8日 · Musculocutaneous nerve: This nerve contributes to muscles that bend the elbow and provides sensation to the forearm. Axillary nerve: This nerve provides signals to muscles that help raise the arm. It travels deep around the shoulder. Nerves are fragile and can be damaged by pressure, stretching, or cutting.