What is the function of the myelin sheath in a neuron?

The myelin sheath is a fatty layer that insulates the axon, speeding up the transmission of neural impulses.

What is the all-or-nothing principle in neural firing?

A neuron either fires completely at full strength or does not fire at all; the size of the action potential does not vary with stimulus intensity.

What occurs during the refractory period of a neuron?

The neuron cannot fire another action potential; it is resetting its resting potential by restoring the ion balance across the membrane.

What is the difference between an excitatory and an inhibitory neurotransmitter?

Excitatory neurotransmitters increase the likelihood that the receiving neuron will fire an action potential, while inhibitory neurotransmitters decrease that likelihood.

What is reuptake in synaptic transmission?

Reuptake is the process by which the sending neuron reabsorbs excess neurotransmitters from the synaptic cleft, ending their effect on the receiving neuron.

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Biological Bases of Behavior – AP Psychology

Master the biological foundations of behavior for the AP Psychology Exam with 30 targeted flashcards. Topics include neuron structure, neurotransmitters, brain regions, the nervous system, and endocrine system. Essential review for Unit 2 of the AP Psychology curriculum.

31 cards Intermediate Neuron Structure & Function Neurotransmitters The Nervous System Brain Structures & Functions Endocrine System & Genetics

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