What does Thoracodorsal nerve supply?
The thoracodorsal nerve carries solely motor fibers. Its main function is to innervate the latissimus dorsi muscle. When it reaches the muscle, the thoracodorsal nerve gives off several small terminal branches that reach the margins of the muscle and supply the whole muscle.
Why is the axillary nerve important?
The axillary nerve’s primary purpose is to supply nerve function to the shoulder joint and three muscles in the arm, but it also innervates some skin in that region, as well.
Why is the radial nerve important?
The radial nerve provides motor (movement) and sensory functions to the arm. It: Stimulates muscles so you can straighten and raise your elbows, wrists, hands and fingers. Provides touch, pain and temperature sensations to portions of the back of the upper arm, forearm, and to the back of the hand and fingers.
What nerve Innervates the Deltoideus?
the axillary nerve
The deltoid muscle is innervated by one of the main branches of the brachial plexus, the axillary nerve (C5, C6).
What happens when thoracodorsal nerve is damaged?
An intact thoracodorsal nerve may also cause atrophy of the muscle, which can lead to shoulder and arm weakness that hampers numerous common movements, including standing up from a chair.
What is the value of axillary nerve?
The axillary nerve supplies two muscles in the arm: deltoid (a muscle of the shoulder) and teres minor (one of the rotator cuff muscles). The axillary nerve also carries sensory information from the shoulder joint.
What happens if the axillary nerve is damaged?
Axillary nerve dysfunction is nerve damage that can lead to a loss of movement or sensation in the shoulder. Conditions associated with axillary nerve dysfunction include fracture of the humerus (upper arm bone), pressure from casts or splints, and improper use of crutches.
What would happen if the radial nerve was damaged?
This nerve controls movement and sensation in the arm and hand and extension of the elbow, wrist and fingers. Radial nerve palsy is a condition that affects the radial nerve and if damage to this nerve occurs, weakness, numbness and an inability to control the muscles served by this nerve may result.
What muscles does the radial nerve stimulate?
Branches and innervation Along its course in the arm region, the radial nerve provides muscular branches that innervate the triceps brachii, anconeus, and brachioradialis muscles.
What does the musculocutaneous nerve innervate?
The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis. It is also responsible for cutaneous innervation of the lateral forearm.