What does thoracodorsal nerve innervate?
The thoracodorsal nerve is a pure motor nerve that innervates the latissimus dorsi muscle.
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 nerve Innervates the subscapularis?
The subscapularis muscle is typically innervated by two distinct nerves, namely an upper and a lower subscapular nerve, both originating from the brachial plexus . These two nerve branches cross the axillary vein dorsally to reach the subscapularis muscle .
What does the thoracodorsal nerve do?
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.
What nerve runs with thoracodorsal artery?
The thoracodorsal nerve is a nerve present in humans and other animals, also known as the middle subscapular nerve or the long subscapular nerve. It supplies the latissimus dorsi muscle….
|Innervates||Latissimus dorsi muscle|
What is the innervation of the supraspinatus?
Supraspinatus is innervated by the suprascapular nerve, formed by the anterior rami of spinal nerves C5 and C6.
What does the suprascapular nerve supply?
The suprascapular nerve supplies two posterior shoulder girdle muscles. These are the infraspinatus muscle, which is the primary external rotator of the arm at the shoulder, and the supraspinatus muscle, responsible for the initial phase of shoulder abduction. There are no cutaneous sensory branches from this nerve.
What is the function of musculocutaneous?
The musculocutaneous nerve is a peripheral nerve in your outer arm. It’s the terminal branch of the lateral cord, which is part of the brachial plexus that extends from your neck to your armpit. The musculocutaneous nerve carries fibers for both motor function (movement) and sensory function (feeling).
Why is it called musculocutaneous nerve?
Description. The Musculocutaneous nerve is a large branch of the Brachial Plexus.It is called musculocutaneous nerve as it supplies the muscles of the front of the arm and skin of lateral side of forearm.
What is thoracodorsal?
The thoracodorsal nerve is a nerve present in humans and other animals, also known as the middle subscapular nerve or the long subscapular nerve. It supplies the latissimus dorsi muscle. Thoracodorsal nerve. Plan of brachial plexus. (Label for thoracodorsal nerve at bottom center.)
What is thoracodorsal artery?
The thoracodorsal artery courses from the axilla along the anterior border of the latissimus dorsi muscle, enters the muscle from underneath, and spreads into two or three major branches at the undersurface of the muscle.
What nerve innervates the supraspinatus and infraspinatus?
The suprascapular nerve
The suprascapular nerve has a motor and sensory innervation. Its motor innervation is to the supraspinatus and infraspinatus muscles.
What is suprascapular neuropathy?
Suprascapular neuropathy is an uncommon cause of shoulder pain and weakness and therefore may be overlooked as an etiologic factor. The suprascapular nerve is vulnerable to compression at the suprascapular notch as well as at the spinoglenoid notch.
What does the supraclavicular nerve innervate?
The supraclavicular nerves are three cutaneous nerves that emerge as a common trunk from the cervical plexus before branching to innervate the skin over the upper chest and shoulders.
What is the thoracodorsal nerve?
The thoracodorsal nerve originates from the posterior cord of the brachial plexus . This nerve receives contributions from spinal nerves C6, C7 and C8. Due to its length and the fact that it arises between the superior and inferior subscapular nerves, the thoracodorsal nerve is also known as the middle subscapular or long subscapular nerve.
What are the symptoms of a thoracodorsal nerve injury?
The thoracodorsal nerve may be injured anywhere along its course by trauma or disease. Numbness or abnormal nerve sensations (i.e., tingling, “pins and needles”) Weakness and loss of function in the associated muscles and body parts, including wristdrop and fingerdrop
What nerve innervates the latissimus dorsi muscle?
The thoracodorsal nerve innervates the latissimus dorsi muscle on its deep surface. The latissimus dorsi is occasionally used for transplantation, and for augmentation of systole in cardiac failure.