Chapter 2: Biological Basis of Behavior, Part I, Biological Bases of
Behavior Questions And Answer s 2025/2026
neuron - CORRECT ANSWER-a nerve cell, the basic building block of the nervous
system.
cell body - CORRECT ANSWER-the part of a neuron that contains the nucleus; the
cell's life-support center
dendrites - CORRECT ANSWER-a neuron's bushy, branching extensions that
receive messages and conduct impulses toward the cell body.
axon - CORRECT ANSWER-the neuron extension that passes messages through its
branches to other neurons or to muscles or glands.
myelin sheath - CORRECT ANSWER-a fatty tissue layer segmentally encasing the
axons of some neurons; enables vastly greater transmission speed as neural
impulses hope from one sausage-like node to the next.
glial cells (glia) - CORRECT ANSWER-cells in the nervous system that support,
nourish, and protect neurons. They also play a role in learning, thinking, and
memory
, action potential - CORRECT ANSWER-a neural impulse; a brief electrical charge
that travels down an axon.
refractory period - CORRECT ANSWER-a brief resting pause that occurs after a
neuron has fired, subsequent action potentials cannot occur until the axon returns
to its resting state
threshold - CORRECT ANSWER-the level of stimulation required to trigger a neural
impulse
all-or-none response - CORRECT ANSWER-a neuron's reaction of either firing (with
a full-strength response) or not firing
synapse - CORRECT ANSWER-the junction between the axon tip of the sending
neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this
junction is called the synaptic gap or synaptic cleft
neurotransmitters - CORRECT ANSWER-chemical messengers that cross the
synaptic gaps between neurons when released by the sending neuron,
neurotransmitters travel across the synapse and bind to receptor sites on the
receiving neuron, thereby influencing whether that neuron will generate a neural
impulse.
reuptake - CORRECT ANSWER-a neurotransmitter's reabsorption by the sending
neuron.
Behavior Questions And Answer s 2025/2026
neuron - CORRECT ANSWER-a nerve cell, the basic building block of the nervous
system.
cell body - CORRECT ANSWER-the part of a neuron that contains the nucleus; the
cell's life-support center
dendrites - CORRECT ANSWER-a neuron's bushy, branching extensions that
receive messages and conduct impulses toward the cell body.
axon - CORRECT ANSWER-the neuron extension that passes messages through its
branches to other neurons or to muscles or glands.
myelin sheath - CORRECT ANSWER-a fatty tissue layer segmentally encasing the
axons of some neurons; enables vastly greater transmission speed as neural
impulses hope from one sausage-like node to the next.
glial cells (glia) - CORRECT ANSWER-cells in the nervous system that support,
nourish, and protect neurons. They also play a role in learning, thinking, and
memory
, action potential - CORRECT ANSWER-a neural impulse; a brief electrical charge
that travels down an axon.
refractory period - CORRECT ANSWER-a brief resting pause that occurs after a
neuron has fired, subsequent action potentials cannot occur until the axon returns
to its resting state
threshold - CORRECT ANSWER-the level of stimulation required to trigger a neural
impulse
all-or-none response - CORRECT ANSWER-a neuron's reaction of either firing (with
a full-strength response) or not firing
synapse - CORRECT ANSWER-the junction between the axon tip of the sending
neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this
junction is called the synaptic gap or synaptic cleft
neurotransmitters - CORRECT ANSWER-chemical messengers that cross the
synaptic gaps between neurons when released by the sending neuron,
neurotransmitters travel across the synapse and bind to receptor sites on the
receiving neuron, thereby influencing whether that neuron will generate a neural
impulse.
reuptake - CORRECT ANSWER-a neurotransmitter's reabsorption by the sending
neuron.
