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A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. [1] [2] These are grouped into the corresponding cervical, thoracic, lumbar, sacral and coccygeal regions of the spine. [1]
Sectional organization of spinal cord. The spinal cord is the main pathway for information connecting the brain and peripheral nervous system. [3] [4] Much shorter than its protecting spinal column, the human spinal cord originates in the brainstem, passes through the foramen magnum, and continues through to the conus medullaris near the second lumbar vertebra before terminating in a fibrous ...
The fifth lumbar spinal nerve 5 (L5) [5] originates from the spinal column from below the lumbar vertebra 5 (L5). L5 supplies many muscles, either directly or through nerves originating from L5. They are not innervated with L5 as single origin, but partly by L5 and partly by other spinal nerves. The muscles are: gluteus maximus muscle mainly S1
The brachial plexus with the courses of the spinal nerves shown in color. Based on an unpublished illustration by Jane Phillips-Conroy for the course Principles of Human Anatomy and Development (L48 4581) at Washington University in St. Louis. Known discrepancies with Brachial plexus article:
The formation of the spinal nerve from the dorsal and ventral roots. Date: 1 December 2006: Source: Vectorized in CorelDraw by Mysid on an existing image at en-wiki ...
In the cervical region, the spinal nerve roots come out above the corresponding vertebrae (i.e., nerve root between the skull and 1st cervical vertebrae is called spinal nerve C1). From the thoracic region to the coccygeal region, the spinal nerve roots come out below the corresponding vertebrae. This method creates a problem when naming the ...
The spinal cord or medulla spinalis; The brain or encephalon The hindbrain or rhombencephalon; The midbrain or mesencephalon; The forebrain or prosencephalon; Composition and central connections of the spinal nerves; Pathways from the brain to the spinal cord; The meninges of the brain and medulla spinalis; The cerebrospinal fluid; The cranial ...
Thoracic spinal nerve 12; Thoraco-abdominal nerves; V. Ventral ramus of spinal nerve This page was last edited on 28 April 2019, at 21:38 (UTC). ...