Question 1

Conduction without decrement means that action potentials transmitted down an axon will not decrease in amplitude.

Accepted Answer

A) True 
 B)False

Question 2

What do muscarine and nicotine have in common?

Accepted Answer

A) They are both antagonists for their respective receptors. 
B) They are both agonists for their respective receptors. 
C) They both activate-protein coupled channels. 
D) They have nothing in common. 
A) They are both antagonists for their respective receptors. 
B) They are both agonists for their respective receptors. 
C) They both activate-protein coupled channels. 
D) They have nothing in common.

Question 3

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 4

Curare is a competitive ACh antagonist at _____________ ACh receptors.

Accepted Answer

A) muscarinic 
B) NMDA 
C) kainate 
D) nicotinic 
A) muscarinic 
B) NMDA 
C) kainate 
D) nicotinic

Question 5

The nicotinic ACh receptor is a ligand-gated channel.

Accepted Answer

A) True 
 B)False

Question 6

Sensory neurons

Accepted Answer

A) are multipolar and carry impulses toward the CNS. 
B) are pseudounipolar and carry impulses toward the CNS. 
C) are bipolar and carry impulses away from the CNS. 
D) are multipolar and carry impulses away from the CNS. 
A) are multipolar and carry impulses toward the CNS. 
B) are pseudounipolar and carry impulses toward the CNS. 
C) are bipolar and carry impulses away from the CNS. 
D) are multipolar and carry impulses away from the CNS.

Question 7

What process occurs when glutamate-releasing presynaptic neurons stimulate postsynaptic release of endocannabinoids that acts as retrograde neurotransmitters?

Accepted Answer

A) long-term potentiation 
B) long-term depression 
C) depolarization-induced suppression of inhibition 
D) All apply. 
A) long-term potentiation 
B) long-term depression 
C) depolarization-induced suppression of inhibition 
D) All apply.

Question 8

Action potentials frequency encodes stimulus intensity.

Accepted Answer

A) True 
 B)False

Question 9

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 10

Which cells are needed for the formation of synapses in the CNS?

Accepted Answer

A) ependymal 
B) microglia 
C) astrocytes 
D) dendrites 
A) ependymal 
B) microglia 
C) astrocytes 
D) dendrites

Question 11

Fetal neuron growth requires the actions of a group of chemicals known as

Accepted Answer

A) endorphins. 
B) synapsins. 
C) neurotrophins. 
D) glutamates. 
A) endorphins. 
B) synapsins. 
C) neurotrophins. 
D) glutamates.

Question 12

The membrane of resting nerve cells is more permeable to ____________ ions than ____________ ions.

Accepted Answer

A) sodium,potassium 
B) calcium,potassium 
C) potassium,sodium 
D) chloride,potassium 
A) sodium,potassium 
B) calcium,potassium 
C) potassium,sodium 
D) chloride,potassium

Question 13

Electrical synapses are functionally linked by tight junctions.

Accepted Answer

A) True 
 B)False

Question 14

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 15

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 16

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 17

What is NOT true of the relative refractory period?

Accepted Answer

A) Na+ channels are inactivated 
B) many Na+ channels are returning to a closed state 
C) K+ is moving out of the axon through its open channels 
D) a strong stimulus could cause a depolarization 
A) Na+ channels are inactivated 
B) many Na+ channels are returning to a closed state 
C) K+ is moving out of the axon through its open channels 
D) a strong stimulus could cause a depolarization

Question 18

Most brain tumors in adults are found within neurons.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is NOT true of nicotinic-gated channels?

Accepted Answer

A) The binding of ACh allows diffusion of Na+ into and K+ out of the neuron. 
B) Only EPSPs are generated. 
C) Only action potentials are generated. 
D) Summation can occur because of a graded response. 
A) The binding of ACh allows diffusion of Na+ into and K+ out of the neuron. 
B) Only EPSPs are generated. 
C) Only action potentials are generated. 
D) Summation can occur because of a graded response.

Question 20

Axonal transport from the cell body to the dendrites and axon is retrograde transport.

Accepted Answer

A) True 
 B)False

Conduction without decrement means that action potentials transmitted down an axon will not decrease in amplitude.

What do muscarine and nicotine have in common?

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

Curare is a competitive ACh antagonist at _____________ ACh receptors.

The nicotinic ACh receptor is a ligand-gated channel.

Sensory neurons

What process occurs when glutamate-releasing presynaptic neurons stimulate postsynaptic release of endocannabinoids that acts as retrograde neurotransmitters?

Action potentials frequency encodes stimulus intensity.

Chemical synapses

Which cells are needed for the formation of synapses in the CNS?

Fetal neuron growth requires the actions of a group of chemicals known as

The membrane of resting nerve cells is more permeable to ions than ions.

Electrical synapses are functionally linked by tight junctions.

Which division of the nervous system innervates involuntary effectors?

Cells supporting neuron cell bodies in ganglia are termed

Cholinergic fibers use ____ as the neurotransmitter.

What is NOT true of the relative refractory period?

Most brain tumors in adults are found within neurons.

Which of the following is NOT true of nicotinic-gated channels?

Axonal transport from the cell body to the dendrites and axon is retrograde transport.

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

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

Conduction without decrement means that action potentials transmitted down an axon will not decrease in amplitude.

What do muscarine and nicotine have in common?

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

Curare is a competitive ACh antagonist at _____________ ACh receptors.

The nicotinic ACh receptor is a ligand-gated channel.

Sensory neurons

What process occurs when glutamate-releasing presynaptic neurons stimulate postsynaptic release of endocannabinoids that acts as retrograde neurotransmitters?

Action potentials frequency encodes stimulus intensity.

Chemical synapses

Which cells are needed for the formation of synapses in the CNS?

Fetal neuron growth requires the actions of a group of chemicals known as

The membrane of resting nerve cells is more permeable to ____________ ions than ____________ ions.

Electrical synapses are functionally linked by tight junctions.

Which division of the nervous system innervates involuntary effectors?

Cells supporting neuron cell bodies in ganglia are termed

Cholinergic fibers use ____ as the neurotransmitter.

What is NOT true of the relative refractory period?

Most brain tumors in adults are found within neurons.

Which of the following is NOT true of nicotinic-gated channels?

Axonal transport from the cell body to the dendrites and axon is retrograde transport.

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

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 membrane of resting nerve cells is more permeable to ions than ions.