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The cervical plexus is composed of axons from spinal nerves C 1 through C 5. It branches into nerves in the posterior neck and head as well as the phrenic nerve, which connects to the diaphragm at the base of the thoracic cavity. Figure 12.4.5 12.4. 5: Nerve Plexuses of the Body.
nerve翻译：身体, 神经, 勇敢, 勇气;胆量;魄力, 紧张, 粗鲁, 厚颜无耻，厚脸皮。了解更多。
Figure 13.3.1 – Nerve Plexuses of the Body: There are four main nerve plexuses in the human body. The cervical plexus supplies nerves to the posterior head and neck, as well as to the diaphragm. The brachial plexus supplies nerves to the arm. The lumbar plexus supplies nerves to the anterior leg.
Spinal nerves connect the spinal cord with other parts of the body. The brain communicates with most of the body through the spinal nerves. There are 31 pairs of them, located at intervals along the length of the spinal cord (see Overview of Spinal Cord Disorders ). Several cranial nerves and most spinal nerves are involved in both the somatic ...
Motor nerves conduct signals from the central nervous system to muscles. Thus they are synonymous with efferent nerves. Neurologists usually diagnose disorders of the nerves by a physical examination, including the testing of reflexes, walking and other directed movements, muscle weakness, proprioception, and the sense of touch.
24 de oct. de 2023 · Peripheral nerves. The workhorse of the peripheral nervous system are the peripheral nerves.Each nerve consists of a bundle of many nerve fibers and their connective tissue coverings. Each nerve fiber is an extension of a neuron whose cell body is held either within the grey matter of the CNS or within ganglia of the PNS. The comparable structure of the CNS is called a ‘tract’.
7 de feb. de 2023 · Your cranial nerves are pairs of nerves that connect your brain to different parts of your head, neck, and trunk. There are 12 of them, each named for its function or structure. Their functions ...
