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YETZEL GARCIA

ANATOMY STACK 2

TermDefinition
Which chemicals allow neurons to communicate with one another? Neurotransmitters
Which membrane receptor acts to directly change ion permeability when stimulated? Gated-channel receptor
An ion channel that opens in response to a sensory stimulus is a(n) stimulus-gated channel
The tiny bulge at the end of a terminal branch of a presynpatic neuron's axon is called a(n) synaptic knob
When a neuron is resting, the inner surface of its plasma membrane is slightly positive compared with its outer surface. False
In a myelinated fiber, the action potential jumps from one node of Ranvier to the next. True
Movement of the membrane potential away from zero (below the usual RMP) is called hyperpolarization
The magnitude of the action potential peaks when the sodium channels close True
When neurotransmitters from synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effect can add up over a brief period to produce an action potential. This is called temporal summation
A term commonly used as a synonym for action potential is nerve impulse
Created by: yetzelgarcia
 

 



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