Question 1

Most of the energy consumed by the nervous system is used for the movement of ions.

Accepted Answer

A) True 
 B)False  True

Question 2

A graded potential results in the generation of an action potential.

Accepted Answer

A) True 
 B)False  False

Question 3

The term used to describe the branching system of neurons into limitless pathways is:

Accepted Answer

A) convergence 
B) divergence 
C) the all-or-nothing principle 
D) excitatory mechanisms 
E) inhibitory mechanisms 
A) convergence 
B) divergence 
C) the all-or-nothing principle 
D) excitatory mechanisms 
E) inhibitory mechanisms B

Question 4

___is found in high concentration outside the cell.

Accepted Answer

A) Protein anions 
B) Sodium 
C) Potassium 
D) Calcium 
A) Protein anions 
B) Sodium 
C) Potassium 
D) Calcium

Question 5

A(n)___ potential is propagated from the axon hillock to the terminal bouton.

Accepted Answer

A) action 
B) resting 
C) graded 
D) depolarized 
A) action 
B) resting 
C) graded 
D) depolarized

Question 6

Neurons are classified according to:

Accepted Answer

A) the number of ribosomes they contain 
B) their shape 
C) the length of their axons 
D) the number of dendrites in each 
E) the number of axons they contain 
A) the number of ribosomes they contain 
B) their shape 
C) the length of their axons 
D) the number of dendrites in each 
E) the number of axons they contain

Question 7

The point of contact from one axon to another neuron is the:

Accepted Answer

A) axoplasm 
B) cytoplasm 
C) endoplasmic reticulum 
D) terminal bouton 
E) neurofilament 
A) axoplasm 
B) cytoplasm 
C) endoplasmic reticulum 
D) terminal bouton 
E) neurofilament

Question 8

Which of the following is NOT a component of the synapse?

Accepted Answer

A) the postsynaptic terminal 
B) the axon hillock 
C) the synaptic cleft 
D) the presynaptic terminal 
A) the postsynaptic terminal 
B) the axon hillock 
C) the synaptic cleft 
D) the presynaptic terminal

Question 9

A(n)___ potential is propagated from the cell membrane at the point of synapse with another neuron.

Accepted Answer

A) action 
B) resting 
C) graded 
D) depolarized 
A) action 
B) resting 
C) graded 
D) depolarized

Question 10

A neural impulse is transmitted across the synaptic cleft primarily through ___ means.

Accepted Answer

A) thermal 
B) chemical 
C) electrical 
D) metabolic 
A) thermal 
B) chemical 
C) electrical 
D) metabolic

Question 11

The relative amount of voltage in an electrical field is the definition of:

Accepted Answer

A) potential 
B) irritability 
C) resting potential 
D) concentration gradient 
A) potential 
B) irritability 
C) resting potential 
D) concentration gradient

Question 12

An adequate stimulus to a neuron may act to:

Accepted Answer

A) close ion channels 
B) prohibit movement of ions across the cell membrane 
C) depolarize the cell 
D) make the electrical charge inside the cell more negative than that outside of the cell 
A) close ion channels 
B) prohibit movement of ions across the cell membrane 
C) depolarize the cell 
D) make the electrical charge inside the cell more negative than that outside of the cell

Question 13

Myelin:

Accepted Answer

A) is most common in smaller nerve fibers of the peripheral nervous system 
B) allows a conduction velocity that is proportional to the square root of the nerve's diameter 
C) is produced by the oligodendrocytes in the peripheral nervous system 
D) prevents leakage of current from the axon into the extracellular fluid 
E) is prevalent at birth 
A) is most common in smaller nerve fibers of the peripheral nervous system 
B) allows a conduction velocity that is proportional to the square root of the nerve's diameter 
C) is produced by the oligodendrocytes in the peripheral nervous system 
D) prevents leakage of current from the axon into the extracellular fluid 
E) is prevalent at birth

Question 14

At the synapse,what event must occur before the synaptic vesicles release neurotransmitters?

Accepted Answer

A) The synaptic vesicles fuse with the presynaptic membrane. 
B) The action potential causes voltage-gated channels to release calcium ions. 
C) Neurotransmitters cross the synaptic cleft. 
D) Neurotransmitters bind to postsynaptic receptors. 
E) The neurotransmitters are inactivated by enzymes. 
A) The synaptic vesicles fuse with the presynaptic membrane. 
B) The action potential causes voltage-gated channels to release calcium ions. 
C) Neurotransmitters cross the synaptic cleft. 
D) Neurotransmitters bind to postsynaptic receptors. 
E) The neurotransmitters are inactivated by enzymes.

Question 15

A neurotransmitter:

Accepted Answer

A) serves to open ionic channels in the postsynaptic membrane 
B) is stored in the postsynaptic membrane 
C) is excitatory,not inhibitory 
D) must be inactivated after it is released from the synaptic vesicles 
E) both A and D 
A) serves to open ionic channels in the postsynaptic membrane 
B) is stored in the postsynaptic membrane 
C) is excitatory,not inhibitory 
D) must be inactivated after it is released from the synaptic vesicles 
E) both A and D

Question 16

In adults,regeneration of neurons and return to function is possible:

Accepted Answer

A) even if cell bodies are destroyed 
B) in the CNS,but not in the PNS 
C) only in the hippocampus 
D) in the PNS through axonal sprouting if the nerve is not severed 
A) even if cell bodies are destroyed 
B) in the CNS,but not in the PNS 
C) only in the hippocampus 
D) in the PNS through axonal sprouting if the nerve is not severed

Question 17

___ allow some ions to move against their gradient to provide extra energy to the cell.

Accepted Answer

A) Voltage gradients 
B) Chemical gradients 
C) Sodium-potassium pumps 
D) Metabolic activities 
E) Both A and D 
A) Voltage gradients 
B) Chemical gradients 
C) Sodium-potassium pumps 
D) Metabolic activities 
E) Both A and D

Question 18

__ is an example of an anion.

Accepted Answer

A) Potassium 
B) Chloride 
C) Sodium 
D) Calcium 
A) Potassium 
B) Chloride 
C) Sodium 
D) Calcium

Question 19

All of the following are characteristic of an action potential EXCEPT:

Accepted Answer

A) neural information is signaled by the amplitude of the action potential 
B) it is propagated at a constant velocity 
C) it is propagated at a constant amplitude 
D) it begins at the axon hillock 
E) it functions in an all-or-nothing manner 
A) neural information is signaled by the amplitude of the action potential 
B) it is propagated at a constant velocity 
C) it is propagated at a constant amplitude 
D) it begins at the axon hillock 
E) it functions in an all-or-nothing manner

Question 20

__ results from an inability to transmit acetylcholine across the synapse to muscle fibers.

Accepted Answer

A) Myasthenia gravis 
B) Parkinson's disease 
C) Seizure 
D) Muscular dystrophy 
A) Myasthenia gravis 
B) Parkinson's disease 
C) Seizure 
D) Muscular dystrophy

Most of the energy consumed by the nervous system is used for the movement of ions.

A graded potential results in the generation of an action potential.

The term used to describe the branching system of neurons into limitless pathways is:

___is found in high concentration outside the cell.

A(n)___ potential is propagated from the axon hillock to the terminal bouton.

Neurons are classified according to:

The point of contact from one axon to another neuron is the:

Which of the following is NOT a component of the synapse?

A(n)___ potential is propagated from the cell membrane at the point of synapse with another neuron.

A neural impulse is transmitted across the synaptic cleft primarily through ___ means.

The relative amount of voltage in an electrical field is the definition of:

An adequate stimulus to a neuron may act to:

Myelin:

At the synapse,what event must occur before the synaptic vesicles release neurotransmitters?

A neurotransmitter:

In adults,regeneration of neurons and return to function is possible:

___ allow some ions to move against their gradient to provide extra energy to the cell.

__ is an example of an anion.

All of the following are characteristic of an action potential EXCEPT:

__ results from an inability to transmit acetylcholine across the synapse to muscle fibers.

Introduction to Speech-Language Neurology

Organization of the Nervous System I

Organization of the Nervous System II

Neurosensory Organization of Speech and Hearing

Neuromotor Control of Speech

The Cranial Nerves

Clinical Speech Syndromes of the Motor Systems

Pediatric Clinical Speech Syndromes: The Developing Brain

Central Language Mechanism and Learning

Adult Disorders of Language

Pediatric Disorders of Language

Filters

Exam 4: Neuronal Function in the Nervous System

Most of the energy consumed by the nervous system is used for the movement of ions.

A graded potential results in the generation of an action potential.

The term used to describe the branching system of neurons into limitless pathways is:

___is found in high concentration outside the cell.

A(n)___ potential is propagated from the axon hillock to the terminal bouton.

Neurons are classified according to:

The point of contact from one axon to another neuron is the:

Which of the following is NOT a component of the synapse?

A(n)___ potential is propagated from the cell membrane at the point of synapse with another neuron.

A neural impulse is transmitted across the synaptic cleft primarily through ___ means.

The relative amount of voltage in an electrical field is the definition of:

An adequate stimulus to a neuron may act to:

Myelin:

At the synapse,what event must occur before the synaptic vesicles release neurotransmitters?

A neurotransmitter:

In adults,regeneration of neurons and return to function is possible:

___ allow some ions to move against their gradient to provide extra energy to the cell.

__ is an example of an anion.

All of the following are characteristic of an action potential EXCEPT:

__ results from an inability to transmit acetylcholine across the synapse to muscle fibers.

Introduction to Speech-Language Neurology

Organization of the Nervous System I

Organization of the Nervous System II

Neurosensory Organization of Speech and Hearing

Neuromotor Control of Speech

The Cranial Nerves

Clinical Speech Syndromes of the Motor Systems

Pediatric Clinical Speech Syndromes: The Developing Brain

Central Language Mechanism and Learning

Adult Disorders of Language

Pediatric Disorders of Language

Filters