NSCS 200 EXAM 1 2025/2026 QUESTIONS
AND ANSWERS 100% PASS
What is the definition of neuroscience? - ANS The study of the nervous system
What are the two branches of the nervous system? - ANS Central Nervous System and
Peripheral Nervous System
What does the CNS encompass? - ANS brain and spinal cord
What does the PNS encompass? - ANS Connects the CNS to the rest of the body
What is cognitive science? - ANS Study of the mind and its operations
What are the main types of neurons? - ANS Sensory, motor, interneurons
What do motor neurons do? - ANS Control muscle and skeletal movement
What do interneurons do? - ANS Communicate between sensory (environmental stimulus)
and motor neurons
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,What is not involved in a reflex? Why? - ANS The brain is not involved, because reflexes
happen at the level of the spinal cord
What are four main functions of neurons? - ANS 1. Process information
2. sense environmental and internal changes
3. Communicate changes to other neurons and muscles
4. Command body responses
Label neuron parts: - ANS A) Dendrites
B) Cell Body/Soma
C) (Only the first part) - Axon Hillock
C) (Only the second part and whatever is under the myelin sheath) - Axon
D) Axon terminals
E) Does not matter - Schwann Cell
F) Myelin Sheath
G) Nodes of Ranvier
H) Nucleus
What do dendrites do? - ANS Receive signals/information from other neurons and carry
them to cell body
What do axons do? - ANS Carry signals/information away from the cell body
What is the end of an axon called? - ANS Axon terminal
What is myelin sheath? - ANS Fatty sheath wrapping around axon that is composed of glia
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, Are dendrites the only place that can receive signals? - ANS No. It can happen at level of
dendrites, axon and soma.
What is the 3 names of the signal that dendrites receive? - ANS synaptic inputs, postsynaptic
potentials, electrical impulses
Are glia neurons? - ANS No
How many main glia are there and how many in each of the divisions? - ANS 4, 1 in PNS and
3 in CNS
What are the 3 glia of the CNS? - ANS 1. Astrocyte
2. Oligodendrocyte
3. Microglial Cell
What is the 1 glia of the PNS? What does it do? - ANS 1. Schwann Cell - forms myelin sheath
What disease involves glia and how? - ANS Multiple sclerosis: an autoimmune disease that
attacks myelin sheath.
What does myelin do - ANS Helps action potentials conduct fast
What happens to an axon if myelin is damaged - ANS Multiple sclerosis-hardening lesions
develop around axon bundles
What happens to an action potential if myelin is damaged - ANS slow or disrupted signaling
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
AND ANSWERS 100% PASS
What is the definition of neuroscience? - ANS The study of the nervous system
What are the two branches of the nervous system? - ANS Central Nervous System and
Peripheral Nervous System
What does the CNS encompass? - ANS brain and spinal cord
What does the PNS encompass? - ANS Connects the CNS to the rest of the body
What is cognitive science? - ANS Study of the mind and its operations
What are the main types of neurons? - ANS Sensory, motor, interneurons
What do motor neurons do? - ANS Control muscle and skeletal movement
What do interneurons do? - ANS Communicate between sensory (environmental stimulus)
and motor neurons
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,What is not involved in a reflex? Why? - ANS The brain is not involved, because reflexes
happen at the level of the spinal cord
What are four main functions of neurons? - ANS 1. Process information
2. sense environmental and internal changes
3. Communicate changes to other neurons and muscles
4. Command body responses
Label neuron parts: - ANS A) Dendrites
B) Cell Body/Soma
C) (Only the first part) - Axon Hillock
C) (Only the second part and whatever is under the myelin sheath) - Axon
D) Axon terminals
E) Does not matter - Schwann Cell
F) Myelin Sheath
G) Nodes of Ranvier
H) Nucleus
What do dendrites do? - ANS Receive signals/information from other neurons and carry
them to cell body
What do axons do? - ANS Carry signals/information away from the cell body
What is the end of an axon called? - ANS Axon terminal
What is myelin sheath? - ANS Fatty sheath wrapping around axon that is composed of glia
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Are dendrites the only place that can receive signals? - ANS No. It can happen at level of
dendrites, axon and soma.
What is the 3 names of the signal that dendrites receive? - ANS synaptic inputs, postsynaptic
potentials, electrical impulses
Are glia neurons? - ANS No
How many main glia are there and how many in each of the divisions? - ANS 4, 1 in PNS and
3 in CNS
What are the 3 glia of the CNS? - ANS 1. Astrocyte
2. Oligodendrocyte
3. Microglial Cell
What is the 1 glia of the PNS? What does it do? - ANS 1. Schwann Cell - forms myelin sheath
What disease involves glia and how? - ANS Multiple sclerosis: an autoimmune disease that
attacks myelin sheath.
What does myelin do - ANS Helps action potentials conduct fast
What happens to an axon if myelin is damaged - ANS Multiple sclerosis-hardening lesions
develop around axon bundles
What happens to an action potential if myelin is damaged - ANS slow or disrupted signaling
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
