The Radial Nerve Course Motor Sensory Teachmeanatomy

The Radial Nerve Course Motor Sensory Teachmeanatomy Anatomical course. the radial nerve is the terminal continuation of the posterior cord of the brachial plexus. it therefore contains fibres from nerve roots c5 – t1. the nerve arises in the axilla region, where it is situated posteriorly to the axillary artery. it exits the axilla inferiorly (via the triangular interval), and supplies. Anatomical course. the median nerve is derived from the medial and lateral cords of the brachial plexus. it contains fibres from roots c6 t1 and can contain fibres from c5 in some individuals. after originating from the brachial plexus in the axilla, the median nerve descends down the arm, initially lateral to the brachial artery.

The Radial Nerve Course Motor Sensory Teachmeanatomy Anatomical course. the musculocutaneous nerve is the terminal branch of the lateral cord of the brachial plexus (c5, c6 and c7) and emerges at the inferior border of pectoralis minor muscle. it leaves the axilla and pierces the coracobrachialis muscle near its point of insertion on the humerus. it gives a branch to this muscle. Origin and course. the radial nerve is the largest terminal branch of the brachial plexus. it originates from the posterior cord along with the axillary nerve, carrying fibers from ventral roots of spinal nerves c5 c8 and t1. the radial nerve arises in the axilla, immediately posterior to the axillary artery, between coracobrachialis and teres. 3 branches in axilla. posterior cutaneous nerve of the arm. branch to long head of triceps. branch to medial head of triceps. triangular interval. it then runs through the triangular interval with profunda brachii artery in posterior compartment between long head of triceps and humerus. spiral groove. next it courses through the spiral groove. The radial nerve is a peripheral nerve supplying specific parts of the arm, forearm, wrist, and hand (see image. posterior upper extremity nerves). this nerve has both motor and sensory functions. the motor branches stimulate the posterior arm muscles, posterior forearm muscles, and extrinsic wrist and hand extensors. the sensory branches supply the skin on the anterolateral arm, distal.