Human Body: Organ Systems: Nervous System
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12 terms
Terms | Definitions |
|---|---|
Central Nervous System | The portion of the vertebrate nervous system consisting of the brain and spinal cord. |
Peripheral Nervous System | The sensory and motor neurons that connect the central nervous system to the rest of the body. |
Autonomic Nervous System | This nervous system provides involuntary control over smooth muscle, cardiac muscle, and glands. |
Somatic Nervous System | The division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system. |
Synapse | The junction between two neurons (axon-to-dendrite) or between a neuron and a muscle. |
Dendrites | The bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body. |
Cell Body | Contains the nucleus, where most of the molecules the neuron needs to survive and function is manufactured. |
Axons | Long, thin fibers that transmit signals away from the neuron cell body to other neurons or to muscles and glands. |
Brain | That part of the central nervous system that includes all the higher nervous centers. |
Spinal Cord | A major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain. |
Sense Organs | Taste - buds in tongue, touch receptors in dermis, hearing - ear, eye - sight - part of peripharal nervous system. |
Nerves Diagram | ![]() |
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