Question 1

Muscarinic ACh receptors act through ____________ activation of K+ channels.

Accepted Answer

A) cGMP 
B) G-protein 
C) M-protein 
D) ATP 
A) cGMP 
B) G-protein 
C) M-protein 
D) ATP

Question 2

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 3

The disease ______________ is characterized by destruction of CNS myelin sheaths and the formation of hardened scars.

Accepted Answer

A) Parkinson's 
B) Alzheimer's 
C) multiple sclerosis. 
D) myasthenia gravis 
A) Parkinson's 
B) Alzheimer's 
C) multiple sclerosis. 
D) myasthenia gravis

Question 4

Blocking ____________ channels would prevent neuron depolarization.

Accepted Answer

A) K+ 
B) Cl- 
C) Na+ 
D) Mg2+ 
A) K+ 
B) Cl- 
C) Na+ 
D) Mg2+

Question 5

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 6

Relaxation of cerebral blood vessels would be stimulated by excessive ________ activity.

Accepted Answer

A) nitric oxide 
B) acetylcholine 
C) norepinephrine 
D) glutamate 
A) nitric oxide 
B) acetylcholine 
C) norepinephrine 
D) glutamate

Question 7

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 8

The average resting membrane potential of an axon is

Accepted Answer

A) -70mV. 
B) -85mV. 
C) 0 mV 
D) +30mV. 
A) -70mV. 
B) -85mV. 
C) 0 mV 
D) +30mV.

Question 9

What medication acts by increasing the action of nitric oxide as a treatment for erectile dysfunction?

Accepted Answer

A) Viagra 
B) marijuana 
C) Prozac 
D) naloxone 
A) Viagra 
B) marijuana 
C) Prozac 
D) naloxone

Question 10

Glycine and GABA stimulate opening of Cl- channels.

Accepted Answer

A) True 
 B)False

Question 11

Neurotransmitters

Accepted Answer

A) are released by endocytosis. 
B) all bind to the same receptor. 
C) usually regulate ion channels. 
D) are actively transported across the synaptic cleft. 
A) are released by endocytosis. 
B) all bind to the same receptor. 
C) usually regulate ion channels. 
D) are actively transported across the synaptic cleft.

Question 12

Axons require ATP to produce an action potential.

Accepted Answer

A) True 
 B)False

Question 13

The myelin sheaths of PNS neurons are produced by

Accepted Answer

A) Schwann cells. 
B) oligodendrocytes. 
C) ependymal cells. 
D) leukocytes. 
A) Schwann cells. 
B) oligodendrocytes. 
C) ependymal cells. 
D) leukocytes.

Question 14

An EPSP is conducted decrementally to the axon hillock,where voltage-gated Na+ and K+ channels are opened to created an action potential in the first segment of the axon.

Accepted Answer

A) True 
 B)False

Question 15

Gliotransmitters

Accepted Answer

A) include calcium ions. 
B) can stimulate neurons. 
C) form the blood-brain barrier. 
D) break down ATP. 
A) include calcium ions. 
B) can stimulate neurons. 
C) form the blood-brain barrier. 
D) break down ATP.

Question 16

Retrograde axonal transport may be responsible for movement of herpes virus,rabies virus,and tetanus toxin from nerve terminals to the cell body.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is NOT classified as a catecholamine?

Accepted Answer

A) norepinephrine 
B) epinephrine 
C) histamine 
D) dopamine 
A) norepinephrine 
B) epinephrine 
C) histamine 
D) dopamine

Question 18

What is present at the axon hillock that allows the production of action potentials?

Accepted Answer

A) voltage-gated channels 
B) ligand-gated channels 
C) muscarinic receptors 
D) chemical-gated channels 
A) voltage-gated channels 
B) ligand-gated channels 
C) muscarinic receptors 
D) chemical-gated channels

Question 19

All axons in the PNS are surrounded by Schwann cells.

Accepted Answer

A) True 
 B)False

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

Muscarinic ACh receptors act through ____________ activation of K⁺ channels.

Postsynaptic inhibition is caused by

The disease ______________ is characterized by destruction of CNS myelin sheaths and the formation of hardened scars.

Blocking ____________ channels would prevent neuron depolarization.

Nitric oxide

Relaxation of cerebral blood vessels would be stimulated by excessive ________ activity.

Repolarization is accomplished through a

The average resting membrane potential of an axon is

What medication acts by increasing the action of nitric oxide as a treatment for erectile dysfunction?

Glycine and GABA stimulate opening of Cl^- channels.

Neurotransmitters

Axons require ATP to produce an action potential.

The myelin sheaths of PNS neurons are produced by

An EPSP is conducted decrementally to the axon hillock,where voltage-gated Na+ and K+ channels are opened to created an action potential in the first segment of the axon.

Gliotransmitters

Retrograde axonal transport may be responsible for movement of herpes virus,rabies virus,and tetanus toxin from nerve terminals to the cell body.

Which of the following is NOT classified as a catecholamine?

What is present at the axon hillock that allows the production of action potentials?

All axons in the PNS are surrounded by Schwann cells.

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

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

Muscarinic ACh receptors act through ____________ activation of K+ channels.

Postsynaptic inhibition is caused by

The disease ______________ is characterized by destruction of CNS myelin sheaths and the formation of hardened scars.

Blocking ____________ channels would prevent neuron depolarization.

Nitric oxide

Relaxation of cerebral blood vessels would be stimulated by excessive ________ activity.

Repolarization is accomplished through a

The average resting membrane potential of an axon is

What medication acts by increasing the action of nitric oxide as a treatment for erectile dysfunction?

Glycine and GABA stimulate opening of Cl- channels.

Neurotransmitters

Axons require ATP to produce an action potential.

The myelin sheaths of PNS neurons are produced by

An EPSP is conducted decrementally to the axon hillock,where voltage-gated Na+ and K+ channels are opened to created an action potential in the first segment of the axon.

Gliotransmitters

Retrograde axonal transport may be responsible for movement of herpes virus,rabies virus,and tetanus toxin from nerve terminals to the cell body.

Which of the following is NOT classified as a catecholamine?

What is present at the axon hillock that allows the production of action potentials?

All axons in the PNS are surrounded by Schwann cells.

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

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

Muscarinic ACh receptors act through ____________ activation of K⁺ channels.

Glycine and GABA stimulate opening of Cl^- channels.