Psychology Chapter 3:
Biopsychology 2026 |
Study Guide, Practice
Questions, Answers,
Rationales & Exam Review
| Complete Ethics Study
Guide
Updated 2026 Questions and Answers
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Rationales
Included
, neurons nerve cells, the basic elements of the nervous system
dendrite a cluster of fibers at one end of a neuron that recieves messages form other
neurons
axon the part of the neuron that carries messages destined for other neurons
terminal buttons small bulges at the end of axons that send messages to other neurons
myelin sheath a protective coating of fat and protein that wraps around an axon
action potential an electric nerve impulse that travels through a neuron's axon when it is set off by a
"trigger" changing the neuron's charge from negative to positive
synapse the space between two neurons where the axon of a sending neuron communicates
with the dendrites of a receiving neuron by using chemical messages
neurotransmitters chemicals that carry messages across the synapse to dendrite (and sometimes the
cell body) of a receiving neuron
hypothalamus BRAIN: Function: Maintain a steady internal environment for the body - responsible
for regulating basic biological needs: hunger, thirst, temperature control
hypothalamus BRAIN: Location: Just below the thalamus
Amygdala BRAIN: Function: Controls fear and aggression
Biopsychology 2026 |
Study Guide, Practice
Questions, Answers,
Rationales & Exam Review
| Complete Ethics Study
Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, neurons nerve cells, the basic elements of the nervous system
dendrite a cluster of fibers at one end of a neuron that recieves messages form other
neurons
axon the part of the neuron that carries messages destined for other neurons
terminal buttons small bulges at the end of axons that send messages to other neurons
myelin sheath a protective coating of fat and protein that wraps around an axon
action potential an electric nerve impulse that travels through a neuron's axon when it is set off by a
"trigger" changing the neuron's charge from negative to positive
synapse the space between two neurons where the axon of a sending neuron communicates
with the dendrites of a receiving neuron by using chemical messages
neurotransmitters chemicals that carry messages across the synapse to dendrite (and sometimes the
cell body) of a receiving neuron
hypothalamus BRAIN: Function: Maintain a steady internal environment for the body - responsible
for regulating basic biological needs: hunger, thirst, temperature control
hypothalamus BRAIN: Location: Just below the thalamus
Amygdala BRAIN: Function: Controls fear and aggression
