A&P5 Word Scramble
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Question | Answer |
neuron: | a cell in neural tissue that is specialized for intercellular communication through changes in membrane potential and synaptic connections |
reflex: | automatic reaction to a stimulus |
nerve impulse: | a self-propagating wave of depolarization; also called an action potential |
summation: | the accumulation of effects, especially those of muscular, sensory, or mental stimuli |
plexus: | a network of interlacing nerves, blood vessels, or lymphatics |
autonomic nervous system: | the division of the nervous system that functions involuntarily; innervates cardiac muscle, smooth muscle, and glands |
motor nervous system: | carries impulses from the central nervous system to effector organs muscles and glands |
somatic nervous system: | a division of the peripheral nervous system; also called the voluntary nervous system |
acetylcholine: | a chemical transmitter substance released by certain nerve endings |
afferent: | carrying to or toward a center |
axon: | neuron process that carries impulses away from the nerve cell body; efferent process; the conducting portion of a nerve cell |
central nervous system: | the brain and the spinal cord |
conductivity: | ability to transmit an electrical impulse |
dendrites: | the branching extension of neurons that carry electrical signals to the cell body; the receptive portion of a nerve cell |
depolarization: | the loss of a state of polarity; the loss of a negative charge inside the plasma membrane |
intersegmental reflex: | a reflex that involves several segments of the spinal cord |
limbic system: | the group of nuclei and centers in the cerebrum and diencephalon that are involved with emotional states, memories, and behavioral drives |
membrane potential: | (transmembrane potential) the potential difference, measured across a cell membrane and expressed in millivolts that results from the uneven distribution of positive and negative ions across the cell membrane |
peripheral nervous system (PNS): | a system of nerves that connects the outlying parts of the body with the central nervous system |
synapse: | the region of communication between neurons |
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ELENITA28
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