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33 Cards in this Set

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  • Back
Affectors
Sensory nerve cells that RECEIVE stimuli
Axon
Part of neuron that CONDUCTS IMPULSES AWAY from cell body; each cell has ONE
Autonomic nervous system
Automatically regulates glands, smooth muscles of hollow organs, and heart
Cell body
Sending and receiving center of neuron, carries on metabolism, stores energy
Central nervous system
Nerve tissues that form the brain and spinal cord; controls voluntary acts
Cerebral cortex
Gray matter of cerebrum (outer layer)
Cerebrospinal fluid
Watery fluid protecting the brain and spinal cord
Dendrite
Neuron part that CARRIES IMPULSES TO cell body
Effectors/ACTORS
Nerve endings that carry out actions
Electroencephalogram (EEG)
Traces electrical activity of a brain
Fissure
A DEEP groove or furrow in an organ such as the brain
Ganglion
Mass of nerve tissues, nerve cell bodies, outside the CNS
Gray Matter
Grayish colored nerve tissue, primarily NONMYELINATED nerve fibers; contains MANY cell bodies of neurons
Hemisphere
Either half of the cerebrum or cerebellum
Lobe
A well-defined part of an organ separated by boundaries such as the brain
Meninges
3-layered membrane protects spinal cord and brain
Myelinated (medullated)
Covered with myelin
Myelin sheath
Noncellular, fatty covering of a nerve fiber
Myoneural junction
Ending of a nerve at a muscle
Nerve
Bundle of nerve fibers, blood vessels, and connective tissue OUTSIDE CNS
Nerve fibers
Threadlike projections of cytoplasm from cell body of neuron. (axons & dendrites)
Nervous system
Coordinates body activities Deals with brain, spinal cord,nerves
Neuroglia
Found ONLY in brain & spinal cord Support for nerve tissue (blood vessels, connective tissue, specialized cells)
Neurology
Study of the nervous system
Neuron
Basic nerve cell
Peripheral nervous system
Provides INPUT from sensory receptors TO CNS and output FROM CNS to effectors
Plexus
A network of nerves
Regeneration
Repair, regrowth, or restoration of a part
Stimulus
Any agent or influence that produces a response in living protoplasm
Sulcus
SLIGHT groove, furrow, or depression in an organ, especially of the brain
Synapse
JUNCTION of AXON and one or more DENDRITES which transmits nerve impulses in ONE direction ONLY
Ventricle
One of the cavities of the brain
White matter
Nerve tissue consisting of MYELINATED nerve fibers