Question 1

Which division of the nervous system innervates involuntary effectors?

Accepted Answer

A) central nervous system 
B) somatic nervous system 
C) autonomic nervous system 
D) associative nervous system 
A) central nervous system 
B) somatic nervous system 
C) autonomic nervous system 
D) associative nervous system

Question 2

Chemicals that stimulate action potentials in postsynaptic cells are called

Accepted Answer

A) hormones. 
B) enzymes. 
C) neurotransmitters. 
D) neurotrophins 
A) hormones. 
B) enzymes. 
C) neurotransmitters. 
D) neurotrophins

Question 3

White matter is

Accepted Answer

A) myelinated axons in the CNS. 
B) myelinated axons in the PNS. 
C) nonmyelinated cell bodies and dendrites in the CNS. 
D) nonmyelinated axons in the CNS. 
A) myelinated axons in the CNS. 
B) myelinated axons in the PNS. 
C) nonmyelinated cell bodies and dendrites in the CNS. 
D) nonmyelinated axons in the CNS.

Question 4

Serotonin is synthesized from the amino acid

Accepted Answer

A) alanine. 
B) glycine. 
C) tryptophan. 
D) serine. 
A) alanine. 
B) glycine. 
C) tryptophan. 
D) serine.

Question 5

Cholinergic fibers use ____ as the neurotransmitter.

Accepted Answer

A) norepinephrine 
B) acetylcholine 
C) dopamine 
D) serotonin 
A) norepinephrine 
B) acetylcholine 
C) dopamine 
D) serotonin

Question 6

What is the action of the binding of muscarine to its receptors in the digestive system?

Accepted Answer

A) alpha subunits bind to K+ channels,close them,leading to depolarization. 
B) alpha subunits bind to K+ channels,open them,leading to hyperpolarization. 
C) beta-gamma subunits bind to K+ channels,close them,leading to depolarization. 
D) beta-gamma subunits bind to K+ channels,open them,leading to hyperpolarization. 
A) alpha subunits bind to K+ channels,close them,leading to depolarization. 
B) alpha subunits bind to K+ channels,open them,leading to hyperpolarization. 
C) beta-gamma subunits bind to K+ channels,close them,leading to depolarization. 
D) beta-gamma subunits bind to K+ channels,open them,leading to hyperpolarization.

Question 7

____________ is an acetylcholinesterase antagonist used to treat myasthenia gravis.

Accepted Answer

A) Neostigmine 
B) Muscarine 
C) Naloxone 
D) Nitric oxide 
A) Neostigmine 
B) Muscarine 
C) Naloxone 
D) Nitric oxide

Question 8

Which type of cell lines the ventricles of the brain and help produce cerebrospinal fluid?

Accepted Answer

A) microglia 
B) satellite cells 
C) ependymal cells 
D) oligodendrocytes 
A) microglia 
B) satellite cells 
C) ependymal cells 
D) oligodendrocytes

Question 9

The period of time when Na+ channels are recovering from their inactive state and K+ channels are still open is the

Accepted Answer

A) repolarization. 
B) absolute refractory period. 
C) relative refractory period. 
D) Repolarization and relative refractory period are correct. 
A) repolarization. 
B) absolute refractory period. 
C) relative refractory period. 
D) Repolarization and relative refractory period are correct.

Question 10

Ligand-gated channels,when activated,allow only Na+ to move into the neuron.

Accepted Answer

A) True 
 B)False

Question 11

Excitatory postsynaptic potentials are produced by

Accepted Answer

A) glycine. 
B) glutamic acid. 
C) gamma-aminobutyric acid. 
D) benzodiazepines. 
A) glycine. 
B) glutamic acid. 
C) gamma-aminobutyric acid. 
D) benzodiazepines.

Question 12

Action potentials would be conducted most rapidly by

Accepted Answer

A) a 10 mm diameter myelinated axon. 
B) a 10 mm diameter unmyelinated axon. 
C) a 40 mm diameter myelinated axon. 
D) a 40 mm diameter unmyelinated axon. 
A) a 10 mm diameter myelinated axon. 
B) a 10 mm diameter unmyelinated axon. 
C) a 40 mm diameter myelinated axon. 
D) a 40 mm diameter unmyelinated axon.

Question 13

Chemical synapses

Accepted Answer

A) have a delayed impulse transmission. 
B) utilize gap junctions. 
C) occur when two nerve cells are in direct contact with each other. 
D) do not require the release of neurotransmitters. 
A) have a delayed impulse transmission. 
B) utilize gap junctions. 
C) occur when two nerve cells are in direct contact with each other. 
D) do not require the release of neurotransmitters.

Question 14

Parkinson's disease is associated with the loss of dopaminergic neurons.

Accepted Answer

A) True 
 B)False

Question 15

Postsynaptic inhibition is caused by

Accepted Answer

A) acetylcholine 
B) GABA 
C) glycine 
D) GABA and glycine 
A) acetylcholine 
B) GABA 
C) glycine 
D) GABA and glycine

Question 16

Repolarization is accomplished through a

Accepted Answer

A) positive feedback loop. 
B) negative feedback loop. 
C) relative refractory loop. 
D) sodium equilibrium potential. 
A) positive feedback loop. 
B) negative feedback loop. 
C) relative refractory loop. 
D) sodium equilibrium potential.

Question 17

An inhibitory postsynaptic potential would be produced by a neurotransmitter opening Cl- channels.

Accepted Answer

A) True 
 B)False

Question 18

What action produces an IPSP on the postsynaptic membrane?

Accepted Answer

A) influx of Na+ ions 
B) opening of Ca2+ channels into the neuron 
C) outflow of K+ ions 
D) opening of Cl- channels into the neuron 
A) influx of Na+ ions 
B) opening of Ca2+ channels into the neuron 
C) outflow of K+ ions 
D) opening of Cl- channels into the neuron

Question 19

Neuroleptics,which are used to treat schizophrenia,are

Accepted Answer

A) dopamine agonists. 
B) ACh antagonists. 
C) dopamine antagonists. 
D) glutamate agonists. 
A) dopamine agonists. 
B) ACh antagonists. 
C) dopamine antagonists. 
D) glutamate agonists.

Question 20

Which of the following is NOT an action needed for glutamate to open ion channels?

Accepted Answer

A) NMDA receptor must bind to glycine 
B) the membrane must be partially depolarized from the action of a different neurotransmitter 
C) Cl- must pass through the open channel 
D) Mg2+ is released from NMDA channel to open it 
A) NMDA receptor must bind to glycine 
B) the membrane must be partially depolarized from the action of a different neurotransmitter 
C) Cl- must pass through the open channel 
D) Mg2+ is released from NMDA channel to open it

Which division of the nervous system innervates involuntary effectors?

Chemicals that stimulate action potentials in postsynaptic cells are called

White matter is

Serotonin is synthesized from the amino acid

Cholinergic fibers use ____ as the neurotransmitter.

What is the action of the binding of muscarine to its receptors in the digestive system?

____________ is an acetylcholinesterase antagonist used to treat myasthenia gravis.

Which type of cell lines the ventricles of the brain and help produce cerebrospinal fluid?

The period of time when Na⁺ channels are recovering from their inactive state and K⁺ channels are still open is the

Ligand-gated channels,when activated,allow only Na⁺ to move into the neuron.

Excitatory postsynaptic potentials are produced by

Action potentials would be conducted most rapidly by

Chemical synapses

Parkinson's disease is associated with the loss of dopaminergic neurons.

Postsynaptic inhibition is caused by

Repolarization is accomplished through a

An inhibitory postsynaptic potential would be produced by a neurotransmitter opening Cl^- channels.

What action produces an IPSP on the postsynaptic membrane?

Neuroleptics,which are used to treat schizophrenia,are

Which of the following is NOT an action needed for glutamate to open ion channels?

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

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Exam 7: The Nervous System: Neurons and Synapses

Which division of the nervous system innervates involuntary effectors?

Chemicals that stimulate action potentials in postsynaptic cells are called

White matter is

Serotonin is synthesized from the amino acid

Cholinergic fibers use ____ as the neurotransmitter.

What is the action of the binding of muscarine to its receptors in the digestive system?

____________ is an acetylcholinesterase antagonist used to treat myasthenia gravis.

Which type of cell lines the ventricles of the brain and help produce cerebrospinal fluid?

The period of time when Na+ channels are recovering from their inactive state and K+ channels are still open is the

Ligand-gated channels,when activated,allow only Na+ to move into the neuron.

Excitatory postsynaptic potentials are produced by

Action potentials would be conducted most rapidly by

Chemical synapses

Parkinson's disease is associated with the loss of dopaminergic neurons.

Postsynaptic inhibition is caused by

Repolarization is accomplished through a

An inhibitory postsynaptic potential would be produced by a neurotransmitter opening Cl- channels.

What action produces an IPSP on the postsynaptic membrane?

Neuroleptics,which are used to treat schizophrenia,are

Which of the following is NOT an action needed for glutamate to open ion channels?

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

Filters

The period of time when Na⁺ channels are recovering from their inactive state and K⁺ channels are still open is the

Ligand-gated channels,when activated,allow only Na⁺ to move into the neuron.

An inhibitory postsynaptic potential would be produced by a neurotransmitter opening Cl^- channels.