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Dorsal Antebrachial Cutaneous Nerve
The posterior cutaneous nerve of forearm is a nerve found in humans and other animals. It is also known as the dorsal antebrachial cutaneous nerve, the external cutaneous branch of the musculospiral nerve, and the posterior antebrachial cutaneous nerve
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Ulnar Nerve
In human anatomy, the ulnar nerve is a nerve that runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest unprotected nerve in the human body (meaning unprotected by muscle or bone), so injury is common. This nerve is directly connected to the little finger, and the adjacent half of the ring finger, innervating the palmar aspect of these fingers, including both front and back of the tips, perhaps as far back as the fingernail beds. This nerve can cause an electric shock-like sensation by striking the medial epicondyle of the humerus from posteriorly, or inferiorly with the elbow flexed. The ulnar nerve is trapped between the bone and the overlying skin at this point. This is commonly referred to as bumping one's "funny bone"
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Median Nerve
The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus. The median nerve originates from the lateral and medial cords of the brachial plexus, and has contributions from ventral roots of C5-C6 (lateral cord) and C8 & T1 (medial cord). The median nerve is the only nerve that passes through the carpal tunnel
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Lateral Root Of Median Nerve
The lateral root of median nerve is one of the two sources of the median nerve.v t eNerves of the brachial plexusSupraclavicularroot (dorsal scapular, long thoracic) upper trunk (suprascapular, to the subclavius)Infraclavicularlateral cordlateral pectoralansa pectoralismusculocutaneous (lateral cutaneous of forearm)median/lateral root: anterior interosseous palmar recurrent common palmar digital (proper palmar digital)medial cordmedial pectoralansa pectoraliscutaneous: medial cutaneous of forearm medial cutaneous of armulnar: muscular palmar dorsal (dorsal digital nerves) superficial (common palmar digital, proper palmar digital) deepmedian/medial root: see aboveposterior cordsubscapular (upper, lower) thoracodorsalaxillary (superior lateral cutaneous of arm)radial: muscular cutaneous (posterior of arm, inferior lateral of arm, posterior of forearm
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Anterior Interosseous Nerve
The anterior interosseous nerve (volar interosseous nerve) is a branch of the median nerve that supplies the deep muscles on the anterior of the forearm, except the ulnar (medial) half of the flexor digitorum profundus. It accompanies the anterior interosseous artery along the anterior of the interosseous membrane of the forearm, in the interval between the flexor pollicis longus and flexor digitorum profundus, supplying the whole of the former and (most commonly) the radial half of the latter, and ending below in the pronator quadratus and wrist joint. Many texts, for simplicity's sake, consider this nerve part of the median nerve. Note that the median nerve supplies all flexor muscles of the forearm except for the ulnar half of flexor digitorum profundus and the flexor carpi ulnaris, which is a superficial muscle of the forearm.Contents1 Innervation 2 Injury 3 Clinical significance 4 See also 5 References 6 External links 7 Additional ImagesInnervation[edit] The
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Palmar Branch Of The Median Nerve
The palmar branch of the median nerve is a branch of the median nerve which arises at the lower part of the forearm.Contents1 Branches 2 Clinical significance 3 Additional images 4 ReferencesBranches[edit] It pierces the palmar carpal ligament, and divides into a lateral and a medial branch;The lateral branch supplies the skin over the ball of the thumb, and communicates with the volar branch of the lateral antebrachial cutaneous nerve. The medial branch supplies the skin of the palm and communicates with the palmar cutaneous branch of the ulnar.Clinical significance[edit] Unlike most of the median nerve innervation of the hand, the palmar branch travels superficial to the Flexor retinaculum of the hand. Therefore, this portion of the median nerve usually remains functioning during carpal tunnel syndrome.[1] Additional images[edit]Diagram of segmental distribution of the cutaneous nerves of the right upper extremity.References[edit] This
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Recurrent Branch Of The Median Nerve
The recurrent branch of the median nerve is the branch of the median nerve which supplies the thenar muscles.[1] It is also occasionally referred to as the thenar branch, or the thenar muscular branch, of the median nerve. In the thenar eminence it provides motor innervation to:opponens pollicis, abductor pollicis brevis, and superficial part of flexor pollicis brevis.An earlier branch of the median nerve also supplies the lumbricals 1 & 2. All other intrinsic muscles of the hand receive their motor innervation from branches of the ulnar nerve. It usually passes distal to the transverse carpal ligament.[2] It ends in the opponens pollicis.[3] This particular nerve is also called "Million Dollar Nerve" because injury to this nerve during carpal tunnel surgery can lead to a million dollar lawsuit. Injury to this nerve can lead to loss of function of the thumb. Such injury can happen if the transverse carpal tunnel ligament (flexor retinaculum) is transected too radially
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Common Palmar Digital Nerves Of Median Nerve
In the palm of the hand the median nerve is covered by the skin and the palmar aponeurosis, and rests on the tendons of the Flexor muscles
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Proper Palmar Digital Nerves Of Median Nerve
In the palm of the hand the median nerve is covered by the skin and the palmar aponeurosis, and rests on the tendons of the Flexor muscles
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Medial Cord
The medial cord is a division of the brachial plexus. The medial cord gives rise to the following nerves:The medial pectoral nerve, C8 and T1, to the pectoralis muscle The medial brachial cutaneous nerve, T1 The medial antebrachial cutaneous nerve, C8 and T1 The median nerve, partly. The other part comes from the lateral cord. C7, C8 and T1 nerve roots. The first branch of the median nerve is to the pronator teres muscle, then the flexor carpi radialis, the palmaris longus and the flexor digitorum superficialis. The median nerve provides sensation to the anterior palm, the anterior thumb, index finger and middle finger. It is the nerve compressed in carpal tunnel syndrome. The ulnar nerve originates in nerve roots C8 and T1 (and occasionally C7). It provides sensation to the ring and pinky fingers
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Medial Pectoral Nerve
The medial pectoral nerve (medial anterior thoracic) arises from the medial cord (sometimes directly from the anterior division of the inferior trunk) of the brachial plexus and through it from the eighth cervical and first thoracic roots. It passes behind the first part of the axillary artery, curves forward between the axillary artery and vein, and unites in front of the artery with a filament from the lateral nerve. It then enters the deep surface of the pectoralis minor muscle, where it divides into a number of branches, which supply the muscle. Two or three branches pierce the muscle and end in the sternocostal head of the pectoralis major muscle. The medial pectoral nerve pierces both the pectoralis minor and the sternocostal head of the pectoralis major
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Medial Cutaneous Nerve Of Arm
The medial brachial cutaneous nerve (lesser internal cutaneous nerve; medial cutaneous nerve of arm) is distributed to the skin on the medial brachial side of the arm.Contents1 Anatomy 2 Eponym 3 See also 4 References 5 Additional images 6 External linksAnatomy[edit] It is the smallest branch of the brachial plexus, and arising from the medial cord receives its fibers from the eighth cervical and first thoracic nerves
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Muscular Branches Of Ulnar Nerve
The muscular branches of ulnar nerve, two in number, arise near the elbow: one supplies the Flexor carpi ulnaris
Flexor carpi ulnaris
(superficial muscle of the anterior compartment of the forearm); the other, the ulnar half of the Flexor digitorum profundus
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Lateral Pectoral Nerve
The lateral nerve (lateral anterior thoracic nerve) arises from the lateral cord of the brachial plexus, and through it from the fifth, sixth, and seventh cervical nerves. It passes across the axillary artery and vein, pierces the clavipectoral (coracoclavicular) fascia, and is distributed to the deep surface of the Pectoralis major
Pectoralis major
muscle.Contents1 Function 2 Clinical significance 3 See also 4 References 5 Additional images 6 External linksFunction[edit] It sends a filament to join the medial (pectoral) anterior thoracic nerve and form with it a loop in front of the first part of the axillary artery. Although this nerve is described as mostly motor, it also has been considered to carry proprioceptive and nociceptive fibers
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Palmar Branch Of Ulnar Nerve
The palmar branch of the ulnar nerve arises about five cm proximal to the wrist from where the ulnar nerve splits into palmar and dorsal branches. The palmar branch represents the continuation of the ulnar nerve as it crosses the flexor retinaculum of the hand on the lateral side of the pisiform bone, medial to and a little behind the ulnar artery. Some sources state that it ends by dividing into a superficial and a deep branch.[1] (Other sources state that the superficial branch of ulnar nerve and deep branch of ulnar nerve are the terminal branches of the ulnar nerve itself.)[2] Additional Images[edit]Palmar branch of ulnar nervePalmar branch of ulnar nerveReferences[edit] This article incorporates text in the public domain from page 942 of the 20th edition of Gray's A
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