Question 1

Any two EPSPs will override one IPSP.

Accepted Answer

A) True 
 B)False

Question 2

Which of these happens first in an adrenergic synaptic transmission?

Accepted Answer

A)   ATP is converted to cyclic AMP
B)   Adenylate cyclase is activated
C)   G protein dissociates from the NE receptor
D)   G protein binds to adenylate cyclase
E)   Cyclic AMP induces several effects in the cellF) C) and E)
G) None of the above

Question 3

All of the following are typical characteristics of neurotransmitters except __________.

Accepted Answer

A)   they are synthesized by a presynaptic neuron
B)   they are released in response to stimulation
C)   they are released into the bloodstream before reaching the postsynaptic cell
D)   they bind to specific receptors on the postsynaptic cell
E)   they alter the physiology of the postsynaptic cellF) A) and C)
G) B) and C)

Question 4

In the brain,neurons are more abundant than neuroglia.

Accepted Answer

A) True 
 B)False

Question 5

A cholinergic synapse uses __________ as its neurotransmitter.

Accepted Answer

A)   monoamine
B)   acetylcholine
C)   epinephrine
D)   norepinephrine
E)   catecholamineF) C) and D)
G) A) and E)

Question 6

While both systems maintain homeostasis,how does the nervous system differ from the endocrine system?

Accepted Answer

A)   The nervous system releases neurotransmitters between cells,while the endocrine system releases hormones into the blood.
B)   The nervous system releases neurotransmitters into the blood,while the endocrine system releases hormones between cells.
C)   The nervous system releases hormones between cells,while the endocrine system releases neurotransmitters into the blood.
D)   The nervous system releases hormones into the blood,while the endocrine system releases neurotransmitters between cells.E) C) and D)
F) A) and C)

Question 7

Which of the following are effectors?

Accepted Answer

A)   Receptors
B)   Stimuli
C)   Reflexes
D)   Glands
E)   Sense organsF) A) and C)
G) B) and C)

Question 8

Ependymal cells line the inner cavities of the CNS.

Accepted Answer

A) True 
 B)False

Question 9

Where are unmyelinated nerve fibers surrounded by Schwann cells?

Accepted Answer

A)   In the PNS
B)   In the CNS
C)   In the PNS and CNS
D)   Nowhere.Unmyelinated nerve fibers are never surrounded by Schwann cells.E) A) and C)
F) A) and B)

Question 10

Inhibitory postsynaptic potentials (IPSPs) are associated with which of the following?

Accepted Answer

A)   Depolarization of the cell membrane
B)   Repolarization of the cell membrane
C)   Hyperpolarization of the cell membrane
D)   No change in the cell membrane potential
E)   No change of the thresholdF) D) and E)
G) All of the above

Question 11

Most metabolic and regulatory functions in a neuron happen where?

Accepted Answer

A)   The axon
B)   The neurosoma
C)   The dendrites
D)   The axon hillock
E)   The Schwann cellF) C) and E)
G) C) and D)

Question 12

How does a neuron transport enzymes produced in the neurosoma to its axon terminals?

Accepted Answer

A)   Along microtubules
B)   By diffusion
C)   Via cytoplasmic streaming
D)   Through co-transportE) A) and C)
F) All of the above

Question 13

Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons.These neurons secrete an inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain.What neurotransmitter is this?

Accepted Answer

A)   Serotonin
B)   Dopamine
C)   Acetylcholine
D)   GABA
E)   GlutamateF) D) and E)
G) A) and D) B

Question 14

What is the most common inhibitory neurotransmitter in the brain?

Accepted Answer

A)   γ-aminobutyric acid (GAB
A)  
B)   Noradrenaline
C)   Epinephrine
D)   Acetylcholine
E)   NorepinephrineF) A) and E)
G) A) and D) A

Question 15

The term "nerve fiber" refers to a(n) __________.

Accepted Answer

A)   nerve cell
B)   organelle in nerve cells
C)   organ
D)   axon
E)   bundle of macromolecules in nerve cellsF) A) and D)
G) C) and D)

Question 16

In order to regenerate,a peripheral nerve fiber must have which of the following?

Accepted Answer

A)   All dendrites intact
B)   At least half the length of the fiber intact
C)   At least the entire axon and neurilemma intact
D)   The neurosoma and at least some neurilemma intact
E)   At least part of the neurosoma intactF) A) and E)
G) A) and C) D

Question 17

Which glial cell is found wrapped around nerve fibers in the PNS?

Accepted Answer

A)   Oligodendrocytes
B)   Schwann cells
C)   Satellite cells
D)   Nodes of Ranvier
E)   Ependymal cellsF) C) and E)
G) C) and D)

Question 18

Norepinephrine is a monoamine.

Accepted Answer

A) True 
 B)False

Question 19

When the voltage of a plasma membrane shifts from +35 mV towards 0 mV,the cell is __________.

Accepted Answer

A)   depolarizing
B)   repolarizing
C)   hyperpolarizing
D)   reaching the threshold
E)   exiting the thresholdF) B) and E)
G) None of the above

Question 20

Neurons move material away from the neurosoma by retrograde transport.

Accepted Answer

A) True 
 B)False

Exam 12: Nervous Tissue

Any two EPSPs will override one IPSP.

Correct AnswerverifiedShow Answer

Which of these happens first in an adrenergic synaptic transmission?

Correct AnswerverifiedShow Answer

All of the following are typical characteristics of neurotransmitters except __________.

Correct AnswerverifiedShow Answer

In the brain,neurons are more abundant than neuroglia.

Correct AnswerverifiedShow Answer

A cholinergic synapse uses __________ as its neurotransmitter.

Correct AnswerverifiedShow Answer

While both systems maintain homeostasis,how does the nervous system differ from the endocrine system?

Correct AnswerverifiedShow Answer

Which of the following are effectors?

Correct AnswerverifiedShow Answer

Ependymal cells line the inner cavities of the CNS.

Correct AnswerverifiedShow Answer

Where are unmyelinated nerve fibers surrounded by Schwann cells?

Correct AnswerverifiedShow Answer

Inhibitory postsynaptic potentials (IPSPs) are associated with which of the following?

Correct AnswerverifiedShow Answer

Most metabolic and regulatory functions in a neuron happen where?

Correct AnswerverifiedShow Answer

How does a neuron transport enzymes produced in the neurosoma to its axon terminals?

Correct AnswerverifiedShow Answer

Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons.These neurons secrete an inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain.What neurotransmitter is this?

Correct AnswerverifiedB

What is the most common inhibitory neurotransmitter in the brain?

Correct AnswerverifiedA

The term "nerve fiber" refers to a(n) __________.

Correct AnswerverifiedShow Answer

In order to regenerate,a peripheral nerve fiber must have which of the following?

Correct AnswerverifiedD

Which glial cell is found wrapped around nerve fibers in the PNS?

Correct AnswerverifiedShow Answer

Norepinephrine is a monoamine.

Correct AnswerverifiedShow Answer

When the voltage of a plasma membrane shifts from +35 mV towards 0 mV,the cell is __________.

Correct AnswerverifiedShow Answer

Neurons move material away from the neurosoma by retrograde transport.

Correct AnswerverifiedShow Answer

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D

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