Question 1

Saltatory conduction occurs in

Accepted Answer

A) myelinated axons,where action potentials occur only at neurofibril nodes. 
B) myelinated axons,where action potentials occur only under the myelin sheath. 
C) myelinated axons,where action potentials occur continuously down the entire axon. 
D) unmyelinated axons,where action potentials occur continuously down the entire axon. 
E) the axon terminal,where full-size action potentials occur at the hillock. 
A) myelinated axons,where action potentials occur only at neurofibril nodes. 
B) myelinated axons,where action potentials occur only under the myelin sheath. 
C) myelinated axons,where action potentials occur continuously down the entire axon. 
D) unmyelinated axons,where action potentials occur continuously down the entire axon. 
E) the axon terminal,where full-size action potentials occur at the hillock.

Question 2

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Accepted Answer

A) endocytosis by the postsynaptic cell. 
B) reuptake by the presynaptic cell. 
C) phagocytosis by a macrophage. 
D) dendritic lassos. 
A) endocytosis by the postsynaptic cell. 
B) reuptake by the presynaptic cell. 
C) phagocytosis by a macrophage. 
D) dendritic lassos.

Question 3

As an axon approaches the cell onto which it will terminate,it generally branches repeatedly into several

Accepted Answer

A) teloaxons. 
B) dendrites. 
C) collateral axons. 
D) telodendria. 
E) neurolemmocytes. 
A) teloaxons. 
B) dendrites. 
C) collateral axons. 
D) telodendria. 
E) neurolemmocytes.

Question 4

What type of circuit is used to maintain body posture while walking

Accepted Answer

A) Converging 
B) Diverging 
C) Reverberating 
D) Parallel-after-discharge 
E) None of the choices is correct. 
A) Converging 
B) Diverging 
C) Reverberating 
D) Parallel-after-discharge 
E) None of the choices is correct.

Question 5

The type of neuronal circuit in which several nerve impulses come together at a single postsynaptic neuron is a _____________ circuit.

Accepted Answer

A) converging 
B) diverging 
C) reverberating 
D) parallel-after-discharge 
E) None of the choices is correct. 
A) converging 
B) diverging 
C) reverberating 
D) parallel-after-discharge 
E) None of the choices is correct.

Question 6

Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system.

Accepted Answer

A) True 
 B)False

Question 7

A mixed nerve is one that contains both

Accepted Answer

A) cranial and spinal nerve fibers. 
B) sensory and motor neurons. 
C) unipolar and bipolar neurons. 
D) an endoneurium and an epineurium. 
E) presynaptic and postsynaptic neurons. 
A) cranial and spinal nerve fibers. 
B) sensory and motor neurons. 
C) unipolar and bipolar neurons. 
D) an endoneurium and an epineurium. 
E) presynaptic and postsynaptic neurons.

Question 8

In neurophysiology,the term "summation" refers to the addition of

Accepted Answer

A) action potentials at the node of Ranvier. 
B) postsynaptic potentials at the initial segment. 
C) excitatory neurotransmitter molecules at a receptor. 
D) resting membrane potentials in a particular area of the brain. 
E) presynaptic hyperpolarizations. 
A) action potentials at the node of Ranvier. 
B) postsynaptic potentials at the initial segment. 
C) excitatory neurotransmitter molecules at a receptor. 
D) resting membrane potentials in a particular area of the brain. 
E) presynaptic hyperpolarizations.

Question 9

Saltatory conduction of a nerve impulse occurs only along myelinated axons.

Accepted Answer

A) True 
 B)False

Question 10

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

Accepted Answer

A) initial 
B) receptive 
C) conductive 
D) transmissive 
A) initial 
B) receptive 
C) conductive 
D) transmissive

Question 11

One main category of neurotransmitters is amino acids.

Accepted Answer

A) True 
 B)False

Question 12

The axon hillock makes up the ________ segment of a neuron.

Accepted Answer

The answer of The axon hillock makes up the ________...

Question 13

Which is not a general function of the nervous system

Accepted Answer

A) Transporting materials throughout the body 
B) Collecting information 
C) Processing and evaluating information 
D) Responding to information 
E) No exceptions;all are general functions of the nervous system. 
A) Transporting materials throughout the body 
B) Collecting information 
C) Processing and evaluating information 
D) Responding to information 
E) No exceptions;all are general functions of the nervous system.

Question 14

The glial cell that myelinates and insulates axons within the CNS is the

Accepted Answer

A) astrocyte. 
B) ependymal cell. 
C) neurolemmocyte. 
D) microglial cell. 
E) oligodendrocyte. 
A) astrocyte. 
B) ependymal cell. 
C) neurolemmocyte. 
D) microglial cell. 
E) oligodendrocyte.

Question 15

A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.All action potentials are the same strength.Signal strength is coded by varying action potential frequency.

Accepted Answer

A) True 
 B)False

Question 16

Which occurs first

Accepted Answer

A) Absolute refractory period 
B) Relative refractory period 
A) Absolute refractory period 
B) Relative refractory period

Question 17

A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n)__________ neuron.

Accepted Answer

A) autonomic motor 
B) somatic sensory 
C) somatic motor 
D) visceral sensory 
A) autonomic motor 
B) somatic sensory 
C) somatic motor 
D) visceral sensory

Question 18

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion)is primarily the job of

Accepted Answer

A) voltage-gated channels. 
B) sodium-potassium pumps. 
C) chemically gated channels. 
D) mechanically gated channels. 
A) voltage-gated channels. 
B) sodium-potassium pumps. 
C) chemically gated channels. 
D) mechanically gated channels.

Question 19

Which division of the nervous system shows a greater capacity for regeneration

Accepted Answer

A) CNS 
B) PNS 
A) CNS 
B) PNS

Question 20

Which of the following is false regarding acetylcholine

Accepted Answer

A) It is rarely used in the body. 
B) It is the neurotransmitter used at the neuromuscular junction. 
C) It is stored and released by the presynaptic cell. 
D) It is synthesized from acetic acid and choline. 
A) It is rarely used in the body. 
B) It is the neurotransmitter used at the neuromuscular junction. 
C) It is stored and released by the presynaptic cell. 
D) It is synthesized from acetic acid and choline.

Exam 12: Nervous System: Nervous Tissue

Saltatory conduction occurs in

One of the ways in which neurotransmitter is removed from the synaptic cleft is

As an axon approaches the cell onto which it will terminate,it generally branches repeatedly into several

What type of circuit is used to maintain body posture while walking

The type of neuronal circuit in which several nerve impulses come together at a single postsynaptic neuron is a _____________ circuit.

Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system.

A mixed nerve is one that contains both

In neurophysiology,the term "summation" refers to the addition of

Saltatory conduction of a nerve impulse occurs only along myelinated axons.

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

One main category of neurotransmitters is amino acids.

The axon hillock makes up the ________ segment of a neuron.

Which is not a general function of the nervous system

The glial cell that myelinates and insulates axons within the CNS is the

A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.All action potentials are the same strength.Signal strength is coded by varying action potential frequency.

Which occurs first

A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n)__________ neuron.

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion)is primarily the job of

Which division of the nervous system shows a greater capacity for regeneration

Which of the following is false regarding acetylcholine

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