Question 1

What is responsible for development of the resting membrane potential?

Accepted Answer

A) Leak channels 
B) Gated channels 
C) Ion pumps 
D) both a and b 
E) both a and c 
A) Leak channels 
B) Gated channels 
C) Ion pumps 
D) both a and b 
E) both a and c

Question 2

Choose the match for each substance listed.
a.covering on the axon
b.second messenger
c.branching process from a cell body
d.impulse-conducting region
e.junction between neurons
f.neurotransmitter
-Acetylcholine

Accepted Answer

The answer of Choose the match for each substance listed.
a.covering...

Question 3

Axon terminals possess ____________________ voltage-gated channels that when operational induce neurotransmitter release.

Accepted Answer

The answer of Axon terminals possess ____________________ voltage-gated channels that...

Question 4

If neurotransmitter from X causes a slight hyperpolarization of a postsynaptic cell, then

Accepted Answer

A) the synapse is excitatory 
B) the synapse is inhibitory 
C) the postsynaptic cell's membrane potential is becoming less negative 
D) the postsynaptic cell's membrane potential is becoming more positive 
E) b, c, and d are occurring 
A) the synapse is excitatory 
B) the synapse is inhibitory 
C) the postsynaptic cell's membrane potential is becoming less negative 
D) the postsynaptic cell's membrane potential is becoming more positive 
E) b, c, and d are occurring

Question 5

The tyrosine-kinase pathway is activated in response to certain lipophilic hormones, whereas the second messenger pathway is activated in response to certain hydrophilic hormones.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following characteristics is least related to steroid hormones?

Accepted Answer

A) Binds to intracellular receptor 
B) Transported bound in the blood 
C) May bind to hormone response element 
D) Stimulate protein synthesis 
E) Utilize a G protein 
A) Binds to intracellular receptor 
B) Transported bound in the blood 
C) May bind to hormone response element 
D) Stimulate protein synthesis 
E) Utilize a G protein

Question 7

Oligodendrocytes are specialized to conduct electrical impulses to neurons.

Accepted Answer

A) True 
 B)False

Question 8

When EPSPs occurring simultaneously from two different presynaptic inputs add together or sum to bring the postsynaptic cell to threshold, it is called ____________________ summation.

Accepted Answer

The answer of When EPSPs occurring simultaneously from two different...

Question 9

Neuropeptides

Accepted Answer

A) are sometimes co-secreted along with classical neurotransmitters 
B) are synthesized in the cytosol of the axon terminal 
C) act at the subsynaptic membrane of the postsynaptic neuron 
D) act slowly to bring about an IPSP or EPSP 
E) are larger molecules than classical neurotransmitters 
A) are sometimes co-secreted along with classical neurotransmitters 
B) are synthesized in the cytosol of the axon terminal 
C) act at the subsynaptic membrane of the postsynaptic neuron 
D) act slowly to bring about an IPSP or EPSP 
E) are larger molecules than classical neurotransmitters

Question 10

Adenylyl cyclase and diacylglycerol are more associated with hydrophilic hormones than with lipophilic hormones.

Accepted Answer

A) True 
 B)False

Question 11

Use the answer code below to answer this section.
a.increased PNa+ and no change in PK+
b.decreased PNa+ and decreased PK+
c.increased PK+ and no change in PNa+
d.increased PK+ and increased PNa+
e.increased PK+ and decreased PNa+
f.Na influx
g.Na+ efflux
h.K+ influx
i.K+ efflux
-Permeability changes that occur at the peak of an action potential

Accepted Answer

The answer of Use the answer code below to answer...

Question 12

Common second messengers include cAMP, acetylcholine, and calcium ions.

Accepted Answer

A) True 
 B)False

Question 13

Amplification is more closely associated with hydrophilic hormones than with lipophilic hormones.

Accepted Answer

A) True 
 B)False

Question 14

The myelin covering the axon promotes the leakage of ions from an axon, but it promotes conservation of ATP in the neuron.

Accepted Answer

A) True 
 B)False

Question 15

Select the last step for synaptic signaling when the action potential arrives at the axon terminal of a presynaptic neuron.

Accepted Answer

A) A neurotransmitter is released by exocytosis. 
B) Calcium flows in the synaptic knob. 
C) The neurotransmitter combines with a protein receptor on the subsynaptic membrane. 
D) The permeability is altered in a postsynaptic neuron. 
E) Sodium influx occurs at the axon terminals 
A) A neurotransmitter is released by exocytosis. 
B) Calcium flows in the synaptic knob. 
C) The neurotransmitter combines with a protein receptor on the subsynaptic membrane. 
D) The permeability is altered in a postsynaptic neuron. 
E) Sodium influx occurs at the axon terminals

Question 16

Opening a chemically-gated ____________________ channel or ____________________ channel will increase the membrane potential of a plasma membrane.

Accepted Answer

The answer of Opening a chemically-gated ____________________ channel or ____________________...

Question 17

Neuron A and neuron B release a minimal amount of neurotransmitter simultaneously onto neuron C, causing neuron C to experience an action potential.This is an example of

Accepted Answer

A) temporal summation 
B) spatial summation 
C) convergence 
D) both a and c 
E) both b and c 
A) temporal summation 
B) spatial summation 
C) convergence 
D) both a and c 
E) both b and c

Question 18

Indicate whether an excitatory or inhibitory synapse is being described.
a.excitatory synapse
b.inhibitory synapse
-Small hyperpolarization of the postsynaptic neuron

Accepted Answer

The answer of Indicate whether an excitatory or inhibitory synapse...

Question 19

____________________ is the hindrance to electrical charge movement.

Accepted Answer

The answer of ____________________ is the hindrance to electrical charge...

Question 20

Which of the following is not true for lipophilic hormones?

Accepted Answer

A) Cells do not store them. 
B) They are all derived from cholesterol. 
C) They are bound to protein in the blood. 
D) They typically activate genes. 
E) Only a small portion of the hormone is biologically active. 
A) Cells do not store them. 
B) They are all derived from cholesterol. 
C) They are bound to protein in the blood. 
D) They typically activate genes. 
E) Only a small portion of the hormone is biologically active.

What is responsible for development of the resting membrane potential?

Choose the match for each substance listed. a.covering on the axon b.second messenger c.branching process from a cell body d.impulse-conducting region e.junction between neurons f.neurotransmitter -Acetylcholine

Axon terminals possess ____________________ voltage-gated channels that when operational induce neurotransmitter release.

If neurotransmitter from X causes a slight hyperpolarization of a postsynaptic cell, then

The tyrosine-kinase pathway is activated in response to certain lipophilic hormones, whereas the second messenger pathway is activated in response to certain hydrophilic hormones.

Which of the following characteristics is least related to steroid hormones?

Oligodendrocytes are specialized to conduct electrical impulses to neurons.

When EPSPs occurring simultaneously from two different presynaptic inputs add together or sum to bring the postsynaptic cell to threshold, it is called ____________________ summation.

Neuropeptides

Adenylyl cyclase and diacylglycerol are more associated with hydrophilic hormones than with lipophilic hormones.

Common second messengers include cAMP, acetylcholine, and calcium ions.

Amplification is more closely associated with hydrophilic hormones than with lipophilic hormones.

The myelin covering the axon promotes the leakage of ions from an axon, but it promotes conservation of ATP in the neuron.

Select the last step for synaptic signaling when the action potential arrives at the axon terminal of a presynaptic neuron.

Opening a chemically-gated channel or channel will increase the membrane potential of a plasma membrane.

Neuron A and neuron B release a minimal amount of neurotransmitter simultaneously onto neuron C, causing neuron C to experience an action potential.This is an example of

Indicate whether an excitatory or inhibitory synapse is being described. a.excitatory synapse b.inhibitory synapse -Small hyperpolarization of the postsynaptic neuron

____________________ is the hindrance to electrical charge movement.

Which of the following is not true for lipophilic hormones?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

Exam 4: Principles of Neural and Hormonal Communication

What is responsible for development of the resting membrane potential?

Choose the match for each substance listed. a.covering on the axon b.second messenger c.branching process from a cell body d.impulse-conducting region e.junction between neurons f.neurotransmitter -Acetylcholine

Axon terminals possess ____________________ voltage-gated channels that when operational induce neurotransmitter release.

If neurotransmitter from X causes a slight hyperpolarization of a postsynaptic cell, then

The tyrosine-kinase pathway is activated in response to certain lipophilic hormones, whereas the second messenger pathway is activated in response to certain hydrophilic hormones.

Which of the following characteristics is least related to steroid hormones?

Oligodendrocytes are specialized to conduct electrical impulses to neurons.

When EPSPs occurring simultaneously from two different presynaptic inputs add together or sum to bring the postsynaptic cell to threshold, it is called ____________________ summation.

Neuropeptides

Adenylyl cyclase and diacylglycerol are more associated with hydrophilic hormones than with lipophilic hormones.

Common second messengers include cAMP, acetylcholine, and calcium ions.

Amplification is more closely associated with hydrophilic hormones than with lipophilic hormones.

The myelin covering the axon promotes the leakage of ions from an axon, but it promotes conservation of ATP in the neuron.

Select the last step for synaptic signaling when the action potential arrives at the axon terminal of a presynaptic neuron.

Opening a chemically-gated ____________________ channel or ____________________ channel will increase the membrane potential of a plasma membrane.

Neuron A and neuron B release a minimal amount of neurotransmitter simultaneously onto neuron C, causing neuron C to experience an action potential.This is an example of

Indicate whether an excitatory or inhibitory synapse is being described. a.excitatory synapse b.inhibitory synapse -Small hyperpolarization of the postsynaptic neuron

____________________ is the hindrance to electrical charge movement.

Which of the following is not true for lipophilic hormones?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

Opening a chemically-gated channel or channel will increase the membrane potential of a plasma membrane.