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There are 12 pairs of spinal nerves that originate from the thoracic segments of the spinal cord. These nerves mainly supply the skin over the chest and intrinsic back muscles of the thoracolumbar region. The thoracic nerves also supply some of the areas of skin over the abdomen and axilla.
3 dni temu · The vagus nerve is a cranial nerve that arises from the brain, passes through the neck, and innervates many vital organs in the thorax and abdomen. In the thorax it sends parasympathetic signals to slow the heart rate and to the lungs to reduce the respiratory rate.
30 paź 2023 · The long thoracic nerve, also called the nerve of Bell or posterior thoracic nerve, arises just above the clavicle from the proximal portion of the brachial plexus, receiving contributions from roots of spinal nerves C5, C6 and C7.
24 lip 2023 · The long thoracic nerve is the motor nerve to the serratus anterior muscle, which functions to pull the scapula forward around the thorax, allowing for anteversion of the arm, and to lift the ribs, assisting in respiration.
The first two nerves supply fibers to the upper limb in addition to their thoracic branches; the next four are limited in their distribution to the parietes of the thorax; the lower five supply the parietes of the thorax and abdomen.
30 paź 2023 · The intercostal nerves originate segmentally from the anterior/ventral rami of thoracic spinal nerves T1 to T11. The term ’intercostal’ refers to their course in the intercostal space, in which they run alongside intercostal vessels.
1 wrz 2001 · An anatomic and imaging atlas was created to provide detailed information about the six pairs of thoracic nerves (phrenic nerves, vagus nerves, recurrent laryngeal nerves, sympathetic trunks, costal nerves, long thoracic nerves).
