Brachial plexus anatomy

Introduction The brachial plexus is a complex intercommunicating network of nerves formed by spinal nerves C5, C6, C7, C8 and T1. The brachial plexus, frequently appears in examination questions. This guide will cover the brachial plexus and includes a summary diagram. One of the best ways to memorise the brachial plexus is by drawing it. If you’d like to put your knowledge of the brachial plexus to the test, take a look at the Geeky Medics You might also be interested in our Anatomy Flashcard Collection which contains over 2000 anatomy flashcards in addition to advanced features such as spaced repetition. 🫁 Overview of the brachial plexus The brachial plexus is a complex intercommunicating network of nerves formed by spinal nerves C5, C6, C7, C8 and T1. It supplies all sensory innervation to the upper limb and most of the axilla, with the exception of an area of the medial upper arm and axilla, which is supplied by the intercostobrachial nerve T2. It supplies all motor innervation to the muscles of the upper limb and shoulder girdle, with the exception of the trapezius, which is supplied by the spinal accessory nerve XI. It also supplies autonomic innervation to the upper limb by intercommunicating with the stellate ganglion of the sympathetic trunk at the level of T1, where it gains sympathetic fibres which supply specialist functions: • Vasomotor: stimulates vasoconstriction of arteries, arterioles and capillaries resulting in skin pallor and coldness • Pilomotor: stimu...

• The brachial plexus is a network of nerves in the shoulder that carries movement and sensory signals from the spinal cord to the arms and hands. • Brachial plexus injuries typically stem from trauma to the neck, and can cause pain, weakness and numbness in the arm and hand. • Brachial plexus injuries often heal well if they aren’t severe. Many people with minor brachial plexus injuries recover 90%–100% of the normal function of their arms. • In more severe brachial plexus injuries, surgery is often necessary to restore function. • If you have had an injury to the neck or shoulder area and you can’t feel or move your hand or arm, you should call your health care provider to find out what’s causing your symptoms What is the brachial plexus? The brachial plexus is a bundle of nerves that stems from nerve roots in the cervical (neck) and upper trunk (torso) sections of the spinal cord (C5-T1), creating a network that connects to the nerves in the arm. These nerves control the motions of your wrists, hands and arms, allowing you to raise your arm, type on your keyboard or throw a baseball. The brachial plexus nerves extend to the skin and are sensory, too. For instance, they let you know that the pan you just grabbed with your hand is too hot to hold. Brachial Plexus Anatomy From the roots, the brachial plexus nerves branch and fuse through the shoulder and down the arm, classified into a few different sections: trunks, divisions, cords and branches. These sections are not fu...

The brachial plexus is the name of a collection of nerves that run from the top of the spinal cord out into the arms. These nerves are critical for controlling movement in the arms and hands. Injuries to any of the nerves in the brachial plexus can have significant effects, like loss of movement and sensation. But there are treatment options available for brachial plexus injuries. Brachial plexus anatomy and function Nerves are collections of neurons that help the brain and spinal cord communicate with the rest of the body. The brachial plexus refers to one bundle of these nerves that is located at the top of the spinal cord. The spine is divided into several sections that control movement and receive sensory information from different parts of the body. The top two sections of the spine are the cervical spine, which starts at the base of the skull, and the thoracic spine, located behind and attached to the rib cage. The nerves in the brachial plexus come from the bottom part of the cervical spine and the top part of the thoracic spine. The nerves from the cervical spine and parts of the thoracic spine communicate with the upper body, including body parts like the arms, hands, and fingers. As the nerves of the brachial plexus travel down the arm, they split into several nerve branches that have slightly different functions. Several branches control muscles in different parts of the arm, allowing you to flex your upper arm or bend your elbow. Another nerve branch allows you...

Your brachial plexus is a network of nerves in your shoulder that branches into five major nerves in each arm. It carries signals from your spinal cord to your arms and hands, allowing you to move your arm, hands, and wrists. Sensory skin nerves are also part of the brachial plexus and allow you to feel temperature and other There are several types of brachial plexus injuries, with many different causes. They also vary in severity, with some people healing completely on their own and others having permanent damage. Read on to learn more about how brachial plexus injuries occur, what your treatment options are, and more. The most common cause of a brachial plexus injury is some sort of trauma, • falls • direct, blunt blows • motor vehicle accidents, especially motorcycles • penetrating wounds, such as gunshot or knife wounds In some cases, the trauma itself will cause the injury, such as a nerve rupture on impact from a fall. In other cases, a brachial plexus injury can be secondary to another injury, such as: • • • traumatic brain injury • spine fracture • A newborn can also get a brachial plexus injury during childbirth. People often confuse a If you have a pinched nerve (aka cervical radiculopathy, nerve compression, or nerve entrapment), your nerve is compressed. This compression is usually due to inflammation or pressure. Doctors rarely use surgery to treat a pinched nerve, except in severe cases. A brachial plexus injury is more severe and often requires surgery. It a...

The Brachial plexus mnemonics is like a unique cheat-code to learning the nerves of the upper limb. almost be impossible! Have you been searching for an easier way to remember all the cords, roots, branches and injuries of the brachial plexus? Then, you my friend, have landed in the perfect domain! Here’s what we are going to do in this mnemonic series. First of all, we’re going to show you how to remember the parts of the brachial plexus easily. I’d also show you how to remember the arrangements, cords and all the branches. You’d also get our mnemonic for all the nerves and their corresponding roots! And that’s not all; you’d also learn the mnemonic to remember the brachial plexus injuries and their causes! I have stragized all this information in this brachial plexus mnemonic so that you can If you’re ready to jump in on this learning experience, then grab a seat, and let’s get started right away! Table of contents • • • • • • • • • • • • • • • • • • • Definition of Brachial Plexus If you want to learn the brachial plexus, it’s good to first understand the underlying concepts behind everything. To spare you an academic definition, here’s what brachial plexus simply means; It’s coined from the two words “ brachial” and “ plexus” where the former means arm and the later means network. So, brachial plexus can be defined as the system of nerves that supplies the upper limb with both motor and sensory innervation. Get the gist? sensory innervation means the nerves which trans...

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Overview The brachial plexus is the network of nerves that sends signals from the spinal cord to the shoulder, arm and hand. A brachial plexus injury occurs when these nerves are stretched, compressed, or in the most serious cases, ripped apart or torn away from the spinal cord. Minor brachial plexus injuries, known as stingers or burners, are common in contact sports, such as football. Babies sometimes sustain brachial plexus injuries during birth. Other conditions, such as inflammation or tumors, may affect the brachial plexus. Types of nerve damage A cross section of spine (on left) shows how nerve roots are connected to the spinal cord. The most severe type of nerve injury is an avulsion (A), where the nerve roots are torn away from the spinal cord. Less severe injuries involve a stretching (B) of the nerve fibers or a rupture (C), where the nerve is torn into two pieces. Signs and symptoms of a brachial plexus injury can vary greatly, depending on the severity and location of the injury. Usually only one arm is affected. Less-severe injuries Minor damage often occurs during contact sports, such as football or wrestling, when the brachial plexus nerves get stretched or compressed. These are called stingers or burners, and can produce the following symptoms: • A feeling like an electric shock or a burning sensation shooting down the arm • Numbness and weakness in the arm These symptoms usually last only a few seconds or minutes, but in some people the symptoms may linge...