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Spring Test 1

Masterbooks Intro to A&P Volume 3

Which system is part of the motor division that controls the involuntary functions? autonomic nervous system
Which cells in nervous tissue help protect and support the neurons? neuroglia
What is the place where a neuron communicates with another neuron or with a muscle cell? synapse
Which part of the nervous system is composed of the brain and the spinal cord? central nervous system
What are the excitable nerve cells that transmit electrical signals? neurons
What is the master control center of the entire nervous system? brain
The portion of the action potential cycle where the membrane potential becomes less and less negative, and then positive. depolarization
Which neurons carry impulses toward the central nervous system? sensory neurons
Which neurons carry impulses away from the central nervous system? motor neurons
What excites a neuron, triggering an electrical signal called an action potential? stimulus
Which tissue is the primary component of the nervous system? nervous tissue
What is composed of these three parts: cell body, dendrites, and the axon? neuron
What are the molecules that carry the signals across the synaptic cleft? neurotransmitters
Can neurons be routinely replaced? NO
This term means "body". somatic
What are the two major divisions of the nervous system? central nervous system & peripheral nervous system
What is made up of bundles of axons located in the peripheral nervous system? nerve
What happens to the number of myelinated axons from birth throughout childhood until adulthood? increases