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Hinge joint model making. The peripheral nervous system is divided into two major parts. The nervous system of vertebrates including humans is divided into the central nervous system cns and the peripheral nervous system pns. In the peripheral nervous system bundles of nerve bers or axons conduct information to and from the central nervous system.
The somatic nervous system and the autonomic nervous system. This includes long nerve fibers as well as ganglia made of neural cell bodies. The cns is the major division and consists of the brain and the spinal cord.
The peripheral nervous system pns is the connection between the central nervous system and the rest of the body. Nervous system anterior view in this article well discuss the peripheral nervous system and its divisions as well as the peripheral nervesthe peripheral nervous system pns consists of all the nerves branching out of the brain and spinal cord the central nervous system cnsif you imagine the cns as the main highway then the pns forms all the connecting secondary roads. These nerves carry information to and from the central nervous system to.
Other cranial nerves contain a mix of sensory and motor fibers. The central nervous system cns is the part of the nervous system consisting primarily of the brain and spinal cordthe cns is so named because it integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric animalsie all multicellular animals except sponges and radially symmetric animals such as jellyfishand it. The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord.
It includes the cranial nerves and spinal nerves from their origin to their end. Peripheral nervous system nerves often extend a great length from the central nervous system to reach the periphery of the body. The cns is like the power plant of the nervous system.
The autonomic nervous system is the part of the nervous system concerned with the innervation of involuntary structures such as the heart smooth muscle and glands within the body. The anterior horn cells although technically part of the central nervous system cns are sometimes discussed with. The cns is enclosed and protected by the meninges a three layered system of.
The peripheral nervous system consists of all neurons that exist outside the brain and spinal cord. The spinal canal contains the spinal cord while the cranial cavity contains the brain. Peripheral nervous system overview.
The peripheral nervous system connects the central nervous system cns to various parts of the body. For example the oculomotor nerve controls the opening and closing of the eyelid and some eye movements.
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