NSCS 200 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
What is the definition of neuroscience? - CORRECT ANSWER The study of the nervous
system
What are the two branches of the nervous system? - CORRECT ANSWER Central
Nervous System and Peripheral Nervous System
What does the CNS encompass? - CORRECT ANSWER brain and spinal cord
What does the PNS encompass? - CORRECT ANSWER Connects the CNS to the rest of
the body
What is cognitive science? - CORRECT ANSWER Study of the mind and its operations
What are the main types of neurons? - CORRECT ANSWER Sensory, motor, interneurons
What do motor neurons do? - CORRECT ANSWER Control muscle and skeletal
movement
What do interneurons do? - CORRECT ANSWER Communicate between sensory
(environmental stimulus) and motor neurons
What is not involved in a reflex? Why? - CORRECT ANSWER The brain is not involved,
because reflexes happen at the level of the spinal cord
What are four main functions of neurons? - CORRECT ANSWER 1. Process information
2. sense environmental and internal changes
,3. Communicate changes to other neurons and muscles
4. Command body responses
Label neuron parts: - CORRECT ANSWER 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? - CORRECT ANSWER Receive signals/information from other
neurons and carry them to cell body
What do axons do? - CORRECT ANSWER Carry signals/information away from the cell
body
What is the end of an axon called? - CORRECT ANSWER Axon terminal
What is myelin sheath? - CORRECT ANSWER Fatty sheath wrapping around axon that is
composed of glia
Are dendrites the only place that can receive signals? - CORRECT ANSWER No. It can
happen at level of dendrites, axon and soma.
What is the 3 names of the signal that dendrites receive? - CORRECT ANSWER synaptic
inputs, postsynaptic potentials, electrical impulses
, Are glia neurons? - CORRECT ANSWER No
How many main glia are there and how many in each of the divisions? - CORRECT
ANSWER 4, 1 in PNS and 3 in CNS
What are the 3 glia of the CNS? - CORRECT ANSWER 1. Astrocyte
2. Oligodendrocyte
3. Microglial Cell
What is the 1 glia of the PNS? What does it do? - CORRECT ANSWER 1. Schwann Cell -
forms myelin sheath
What disease involves glia and how? - CORRECT ANSWER Multiple sclerosis: an
autoimmune disease that attacks myelin sheath.
What does myelin do - CORRECT ANSWER Helps action potentials conduct fast
What happens to an axon if myelin is damaged - CORRECT ANSWER Multiple sclerosis-
hardening lesions develop around axon bundles
What happens to an action potential if myelin is damaged - CORRECT ANSWER slow or
disrupted signaling
What are 4 functions of glia (and 1 disease) - CORRECT ANSWER 1. Provide nutrients
and insulation for blood brain barrier (astrocytes)
2. Provide support for nerve cells 'myelin sheath' (oligodendrocytes, schwann cells)
3. Assist with neuronal migration during development
4. essential for synaptic function
QUESTIONS AND CORRECT ANSWERS
What is the definition of neuroscience? - CORRECT ANSWER The study of the nervous
system
What are the two branches of the nervous system? - CORRECT ANSWER Central
Nervous System and Peripheral Nervous System
What does the CNS encompass? - CORRECT ANSWER brain and spinal cord
What does the PNS encompass? - CORRECT ANSWER Connects the CNS to the rest of
the body
What is cognitive science? - CORRECT ANSWER Study of the mind and its operations
What are the main types of neurons? - CORRECT ANSWER Sensory, motor, interneurons
What do motor neurons do? - CORRECT ANSWER Control muscle and skeletal
movement
What do interneurons do? - CORRECT ANSWER Communicate between sensory
(environmental stimulus) and motor neurons
What is not involved in a reflex? Why? - CORRECT ANSWER The brain is not involved,
because reflexes happen at the level of the spinal cord
What are four main functions of neurons? - CORRECT ANSWER 1. Process information
2. sense environmental and internal changes
,3. Communicate changes to other neurons and muscles
4. Command body responses
Label neuron parts: - CORRECT ANSWER 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? - CORRECT ANSWER Receive signals/information from other
neurons and carry them to cell body
What do axons do? - CORRECT ANSWER Carry signals/information away from the cell
body
What is the end of an axon called? - CORRECT ANSWER Axon terminal
What is myelin sheath? - CORRECT ANSWER Fatty sheath wrapping around axon that is
composed of glia
Are dendrites the only place that can receive signals? - CORRECT ANSWER No. It can
happen at level of dendrites, axon and soma.
What is the 3 names of the signal that dendrites receive? - CORRECT ANSWER synaptic
inputs, postsynaptic potentials, electrical impulses
, Are glia neurons? - CORRECT ANSWER No
How many main glia are there and how many in each of the divisions? - CORRECT
ANSWER 4, 1 in PNS and 3 in CNS
What are the 3 glia of the CNS? - CORRECT ANSWER 1. Astrocyte
2. Oligodendrocyte
3. Microglial Cell
What is the 1 glia of the PNS? What does it do? - CORRECT ANSWER 1. Schwann Cell -
forms myelin sheath
What disease involves glia and how? - CORRECT ANSWER Multiple sclerosis: an
autoimmune disease that attacks myelin sheath.
What does myelin do - CORRECT ANSWER Helps action potentials conduct fast
What happens to an axon if myelin is damaged - CORRECT ANSWER Multiple sclerosis-
hardening lesions develop around axon bundles
What happens to an action potential if myelin is damaged - CORRECT ANSWER slow or
disrupted signaling
What are 4 functions of glia (and 1 disease) - CORRECT ANSWER 1. Provide nutrients
and insulation for blood brain barrier (astrocytes)
2. Provide support for nerve cells 'myelin sheath' (oligodendrocytes, schwann cells)
3. Assist with neuronal migration during development
4. essential for synaptic function
