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The medial cutaneous branches of the posterior divisions of the thoracic nerves descend for some distance close to the spinous processes before reaching the skin, while the lateral branches travel downward for a considerable distance—it may be as much as the breadth of four ribs—before they become superficial; the branch from the twelfth thoracic, for instance, reaches the skin only a ...
The medial pectoral nerve usually arises from the medial cord of the brachial plexus; it can however occasionally arise directly from the anterior division of the inferior trunk of the brachial plexus. [1] [2] It is derived from the eighth cervical (C8) and first thoracic (T1) spinal nerve roots. [1] The origin is situated posterior to the ...
Its name comes from it being medial to the axillary artery as it passes through the axilla. The other cords of the brachial plexus are the posterior cord and lateral cord. The medial cord gives rise to the following nerves from proximal to distal: medial pectoral nerve (C8-T1) medial brachial cutaneous nerve (T1) medial antebrachial cutaneous ...
Pages in category "Thoracic nerves" The following 17 pages are in this category, out of 17 total. ... Medial pectoral nerve; Meningeal branches of spinal nerve; P.
Inferior lateral cutaneous nerve of arm - Near blue "axillary" area, but actually branches from radial nerve. Most modern sources distinguish the superior and inferior, but some still include a single "lateral brachial cutaneous nerve". ) Intercostobrachial nerve (brown) Medial cutaneous nerve of arm (yellow) - labeled as "medial brachial ...
Palatine nerves; Palmar branch of the median nerve; Palmar branch of ulnar nerve; Pancreatic plexus; Patellar plexus; Pelvic splanchnic nerves; Perforating cutaneous nerve; Perineal branches of posterior femoral cutaneous nerve; Perineal nerve; Petrous ganglion; Pharyngeal branch of vagus nerve; Pharyngeal branches of glossopharyngeal nerve ...
An action potential (or nerve impulse) is a transient alteration of the transmembrane voltage (or membrane potential) across the membrane in an excitable cell generated by the activity of voltage-gated ion channels embedded in the membrane. The best known action potentials are pulse-like waves that travel along the axons of neurons.
The long thoracic nerve arises from the anterior rami of cervical spinal nerves C5, C6, and C7. [1] [2] [3] The root from C7 may occasionally be absent. [4] The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle. [citation needed]