An indepth guide to the nerve supply to the upper limb, including tips on identifying peripheral nerve injuries in osces, videos and a handy summary table. Introduction upper limb function depends on five roots of origin of spinal nerves in the neck. The brachial plexus is responsible for the innervation to the upper limb and some parts of the thorax. It originates from nerve roots c5 to t1 and, as it passes through the. The medical information on this site is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes. Muscles stabilizing pectoral girdle muscles of the upper limb. Anatomy lateral femoral cutaneous nerve of thigh everything you need to know dr. Lateral, medial, posterior in relation to the axillary artery. If you would like a large, unwatermarked image for your web page or. Scribd is the worlds largest social reading and publishing site.
Summary of the nerve supply of upper extremity youtube. Cranial nerve 11, spinal accessory nerve rhomboids spines of c7 and t15 vertebral medial border of scapula retract and medially rotate the scapula dorsal scapular levator scapulae transverse processes of c14 upper part of medial border of scapula elevate scapula, medial rotation of scapula 3rd and 4 th cervical spinal nerves. The nerve supply to the upper limb is almost entirely supplied by the brachial plexus. Muscles of anteriorflexor compartment of arm and their nerve supply muscles supplied by musculocutaneous nerve. There are 6 topics covered in the nerves of the upper limb, an overview of the brachial plexus and a more indepth look into its 5 main branches. You may not embed one of our images on your web page without a link back to our site.
Immediately distal to the teres major, the brachial artery gives rise to the profunda brachii deep artery, which travels with the radial nerve in the radial groove of the humerus and supplies structures in the posterior. Nerves of upper limb free download as powerpoint presentation. These spinal roots branch and join in a complex manner forming the brachial plexus, which passes over the first rib and under the clavicle to reach the axilla. I have covered the brachial plexus itself in more detail in a separate article here. There, five nerves emerge and pass down the limb to supply. The diagram below summarises the structure and branches of the. The inside of psoas major from anterior sections of the ventral rami of l2 to l4 spinal nerves. Arterial supply to the upper limb subclavian brachial. This video provides an overview of the nerve supply of the upper extremity. Anatomic variations of brachial plexus anatomical sciences journal. In the left arm of the patient the course and supply of median nerve is normal.
Dissection of right and left upper limbs and demonstration of the origin and the. Pdf the communications between the ulnar and median nerves in. Extremities developed from limb buds in the body wall. Compare and contrast the dermatomes and cutaneous fields of the upper limb. Instant anatomy is a specialised web site for you to learn all about human anatomy of the body with diagrams, podcasts and revision questions. Instant anatomy lower limb nerves cutaneous supply. Its bones, muscles, nerves, joints, blood vessels and lymphatics, anatomical areas, and structures found in the hand. It runs through the upper anterior part of the obturator foramen to the medial adductor compartment of the thigh while descending along the. The nerve goes down in psoas major and issues from its medial border at the ala of the sacrum. The basic anatomy of the median and ulnar nerves in the upper limb is well described in textbooks. Muscle name origin insertion action innervation muscles of. Obturator nerve belongs to the adductor compartment of the thigh.