Question 1

Astrocytes can be excited by changes in intracellular Ca2+ concentration.

Accepted Answer

A) True 
 B)False

Question 2

Cells supporting neuron cell bodies in ganglia are termed

Accepted Answer

A) astrocytes. 
B) ependymal cells. 
C) satellite cells. 
D) Schwann cells. 
A) astrocytes. 
B) ependymal cells. 
C) satellite cells. 
D) Schwann cells.

Question 3

Nitric oxide

Accepted Answer

A) is a chemical messenger activating adenylate cyclase. 
B) stimulates the dilation of blood vessels. 
C) is produced from L-asparagine. 
D) All apply. 
A) is a chemical messenger activating adenylate cyclase. 
B) stimulates the dilation of blood vessels. 
C) is produced from L-asparagine. 
D) All apply.

Question 4

Hyperpolarization in the postsynaptic cell is caused by

Accepted Answer

A) excitatory postsynaptic potentials. 
B) inhibitory postsynaptic potentials. 
C) movement of K+ out of the cell. 
D) Inhibitory postsynaptic potentials and movement of K+ out of the cell are correct. 
A) excitatory postsynaptic potentials. 
B) inhibitory postsynaptic potentials. 
C) movement of K+ out of the cell. 
D) Inhibitory postsynaptic potentials and movement of K+ out of the cell are correct.

Question 5

During the absolute refractory period,a supramaximal stimulus can bring the cell to threshold.

Accepted Answer

A) True 
 B)False

Question 6

Electrical synapses are functionally linked by tight junctions.

Accepted Answer

A) True 
 B)False

Question 7

The average resting membrane potential of a neuron is -85mV.

Accepted Answer

A) True 
 B)False

Question 8

Regeneration of CNS axons may be prevented in part by inhibitory proteins in the membranes of the

Accepted Answer

A) myelin sheath. 
B) neurons. 
C) astrocytes. 
D) satellite cells. 
A) myelin sheath. 
B) neurons. 
C) astrocytes. 
D) satellite cells.

Question 9

Enhancing the excitability of a synapse so that transmission is favored along certain pathways is called

Accepted Answer

A) long-term potentiation. 
B) synaptic plasticity. 
C) excitotoxicity. 
D) summation. 
A) long-term potentiation. 
B) synaptic plasticity. 
C) excitotoxicity. 
D) summation.

Question 10

ATP and adenosine can be released by nonneural cells to aid in blood clotting,taste,and pain.

Accepted Answer

A) True 
 B)False

Question 11

What type of proteins are present at chemical synapses to ensure the close proximity of the presynaptic and postsynaptic membranes?

Accepted Answer

A) connexins 
B) myelin 
C) terminal boutons 
D) cell adhesion molecules (CAMs) 
A) connexins 
B) myelin 
C) terminal boutons 
D) cell adhesion molecules (CAMs)

Question 12

Most motor neurons are multipolar.

Accepted Answer

A) True 
 B)False

Question 13

Most brain tumors in adults are found within neurons.

Accepted Answer

A) True 
 B)False

Question 14

The mesolimbic dopamine neurons arise in the midbrain and terminate in the

Accepted Answer

A) nucleus accumbens. 
B) corpus striatum. 
C) basal nuclei. 
D) corpus callosum. 
A) nucleus accumbens. 
B) corpus striatum. 
C) basal nuclei. 
D) corpus callosum.

Question 15

Spatial summation

Accepted Answer

A) occurs when a single neuron releases neurotransmitter rapidly. 
B) occurs because of the convergence of many neurons on a single postsynaptic cell. 
C) only involves excitatory postsynaptic potentials. 
D) only involves inhibitory postsynaptic potentials. 
A) occurs when a single neuron releases neurotransmitter rapidly. 
B) occurs because of the convergence of many neurons on a single postsynaptic cell. 
C) only involves excitatory postsynaptic potentials. 
D) only involves inhibitory postsynaptic potentials.

Question 16

ATP and adenosine can act as neurtransmitters

Accepted Answer

A) by being released from astrocytes. 
B) as cotransmitters. 
C) as paracrine regulators. 
D) All apply. 
A) by being released from astrocytes. 
B) as cotransmitters. 
C) as paracrine regulators. 
D) All apply.

Question 17

Which of the following effect(s)acetylcholine synaptic transmission?

Accepted Answer

A) curare 
B) botulinum toxin 
C) strychnine 
D) curare and botulinum toxin. 
A) curare 
B) botulinum toxin 
C) strychnine 
D) curare and botulinum toxin.

Question 18

Alzheimer's disease is associated with the loss of cholinergic fibers that end at the hippocampus and cerebral cortex.

Accepted Answer

A) True 
 B)False

Question 19

The normal effect of F1F1F1S1F1F1F10-endorphin can be blocked by

Accepted Answer

A) curare. 
B) naloxone. 
C) muscarine. 
D) nicotine 
A) curare. 
B) naloxone. 
C) muscarine. 
D) nicotine

Question 20

Somatic motor neurons innervate involuntary effectors.

Accepted Answer

A) True 
 B)False

Astrocytes can be excited by changes in intracellular Ca²⁺ concentration.

Cells supporting neuron cell bodies in ganglia are termed

Nitric oxide

Hyperpolarization in the postsynaptic cell is caused by

During the absolute refractory period,a supramaximal stimulus can bring the cell to threshold.

Electrical synapses are functionally linked by tight junctions.

The average resting membrane potential of a neuron is -85mV.

Regeneration of CNS axons may be prevented in part by inhibitory proteins in the membranes of the

Enhancing the excitability of a synapse so that transmission is favored along certain pathways is called

ATP and adenosine can be released by nonneural cells to aid in blood clotting,taste,and pain.

What type of proteins are present at chemical synapses to ensure the close proximity of the presynaptic and postsynaptic membranes?

Most motor neurons are multipolar.

Most brain tumors in adults are found within neurons.

The mesolimbic dopamine neurons arise in the midbrain and terminate in the

Spatial summation

ATP and adenosine can act as neurtransmitters

Which of the following effect(s)acetylcholine synaptic transmission?

Alzheimer's disease is associated with the loss of cholinergic fibers that end at the hippocampus and cerebral cortex.

The normal effect of -endorphin can be blocked by

Somatic motor neurons innervate involuntary effectors.

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

Astrocytes can be excited by changes in intracellular Ca2+ concentration.

Cells supporting neuron cell bodies in ganglia are termed

Nitric oxide

Hyperpolarization in the postsynaptic cell is caused by

During the absolute refractory period,a supramaximal stimulus can bring the cell to threshold.

Electrical synapses are functionally linked by tight junctions.

The average resting membrane potential of a neuron is -85mV.

Regeneration of CNS axons may be prevented in part by inhibitory proteins in the membranes of the

Enhancing the excitability of a synapse so that transmission is favored along certain pathways is called

ATP and adenosine can be released by nonneural cells to aid in blood clotting,taste,and pain.

What type of proteins are present at chemical synapses to ensure the close proximity of the presynaptic and postsynaptic membranes?

Most motor neurons are multipolar.

Most brain tumors in adults are found within neurons.

The mesolimbic dopamine neurons arise in the midbrain and terminate in the

Spatial summation

ATP and adenosine can act as neurtransmitters

Which of the following effect(s)acetylcholine synaptic transmission?

Alzheimer's disease is associated with the loss of cholinergic fibers that end at the hippocampus and cerebral cortex.

The normal effect of -endorphin can be blocked by

Somatic motor neurons innervate involuntary effectors.

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

Astrocytes can be excited by changes in intracellular Ca²⁺ concentration.