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PSYCH. CHAPTERS 1,2,3 EXAM REVIEW QUESTIONS AND ANSWERS
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PSYCH. CHAPTERS 1,2,3 EXAM REVIEW QUESTIONS AND ANSWERS
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PSYCH. CHAPTERS 1,2,3 EXAM REVIEWQUESTIONS AND ANSWERS
The fundamental unit of the nervous system is___. (Ch. 3) - Answer-Neuron
Which 1 is a type of neuron? (Ch.3) - Answer-Sensory Neurons (afferent neurons),
Motor Neurons (efferent neurons), interneurons
The part of the neuron that receives info from other cells is the ___. (Ch. 3) - Answer-
interneurons
The long extension from the cell body whose function is to transmit info to other neurons
is__. (Ch. 3) - Answer-axon
The part of the neuron that is a fatty layer, that is wrapped around the axon, and that
increases the speed of transmission is the____. (Ch. 3) - Answer-myelin sheath
Multiple Sclerosis is a disorder that involves problems with___. (Ch.3) - Answer-myelin
sheath on large clusters of axons
The gap or space between neurons is referred to as a(n)___. (Ch. 3) - Answer-synaptic
cleft
Spreading voltage changes that occur when one neuron stimulates another is a(n) ___.
(Ch. 3) - Answer-graded potentials
Which of the following is a characteristic of a graded potential? (Ch. 3) - Answer-2
chara: 1. Their strength diminishes as they travel along the cell membrane away from
the source of the stimulation. 2. Potentials are cumulative or additive
Which of the following is associated with "firing" of the neuron? (Ch. 3) - Answer-action
potential
The part of the axon that involves small sacs that contain neurotransmitters is
called___. (Ch. 3) - Answer-synaptic vesicles
____ are chemicals that transmit information from one cell to another. (Ch. 3) - Answer-
neurotransmitters
___neurotransmitters depolarize the postsynaptic membrane. (Ch. 3) - Answer-
excitatory
___neurotransmitters increase the polarization of the postsynaptic membrane. (Ch.3) -
Answer-inhibitory
, Inhibitory neurotransmitters (do what) ___. (Ch. 3) - Answer-increase the polarization of
the postsynaptic membrane
The neurotransmitter that has the capability of exciting nearly every neuron in the
nervous system and appears to be involved in learning is____. (Ch.3) - Answer-
glutamale
GABA is a(n)____(what kind of neurotransmitter) (Ch.3) - Answer-widespread,inhibitory
role
The neurotransmitter that regulates anxiety and that is used by about one-third of all the
neurons in the brain is___. ) (Ch.3) - Answer-dopamine
Memory & learning are associated most with which neurotransmitter? (Ch.3) - Answer-
acetylcholine
Chemicals that elevate mood and reduce pain are referred to as ___. (Ch.3) - Answer-
endorphins
Narcotics work because they are chemically very similar to ___. (Ch. 3 ) - Answer-
endorphins
Basic life processes are in the control of what part of the nervous system? (Ch.3) -
Answer-autonomic nervous system
In an emergency situation, the adrenal glands of the body secrete "emergency"
hormones while the ___nervous system prepares the body for fight or flight. (Ch. 3) -
Answer-sympathetic
An angry student comes at me with a knife. I take it that they aren't happy with their
grade. What part of the automatic nervous system is involved? (Ch.3) - Answer-
sympathetic
This link between the spinal cord and the brain is involved in heartbeat, circulation, and
respiration. This link is the ___. (Ch.3) - Answer-medulla oblongata
A car accident causes damage to a person's medulla oblongata. What is the person
most likely going to be like? (Ch.3) - Answer-dead
All of the information that I see, hear,taste, and feel is processed by, and relayed to, the
higher brain centers by the___. (Ch.3) - Answer-thalamus
The amygdala seems to be important in___. (Ch.3) - Answer-limbic system
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