Question 1

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 2

At what region of the neuron are action potentials first produced?

Accepted Answer

A) dendrites 
B) cell body 
C) initial segment of an axon 
D) axon hillock 
A) dendrites 
B) cell body 
C) initial segment of an axon 
D) axon hillock

Question 3

Degeneration of spinal motor neurons in adults may be due to a lack of ____________ factor.

Accepted Answer

A) brain-derived neurotrophic (BDNF) 
B) neurotrophin-3 
C) nerve growth (NGF) 
D) glial-derived neurotrophic (GDNF) 
A) brain-derived neurotrophic (BDNF) 
B) neurotrophin-3 
C) nerve growth (NGF) 
D) glial-derived neurotrophic (GDNF)

Question 4

Which of the following is true of axons?

Accepted Answer

A) contain receptive areas 
B) very thin and short 
C) originates at the axon hillock on the cell body 
D) transmits graded electrochemical impulses 
A) contain receptive areas 
B) very thin and short 
C) originates at the axon hillock on the cell body 
D) transmits graded electrochemical impulses

Question 5

Most synapses in the body are electrical.

Accepted Answer

A) True 
 B)False

Question 6

Which ion's movements is responsible for repolarization?

Accepted Answer

A) influx of K+ 
B) influx of Na+ 
C) outward diffusion of K+ 
D) outward diffusion of Na+ 
A) influx of K+ 
B) influx of Na+ 
C) outward diffusion of K+ 
D) outward diffusion of Na+

Question 7

The most numerous of all cells of CNS nervous tissue are the

Accepted Answer

A) astrocytes. 
B) neurons. 
C) Schwann cells. 
D) microglia 
A) astrocytes. 
B) neurons. 
C) Schwann cells. 
D) microglia

Question 8

Atropine is an antagonist to nicotine.

Accepted Answer

A) True 
 B)False

Question 9

Schwann cells and oligodendrocytes have similar functions.

Accepted Answer

A) True 
 B)False

Question 10

Postsynaptic inhibition is caused by neurotransmitters that produce hyperpolarization.

Accepted Answer

A) True 
 B)False

Question 11

CCK (cholecystokinin)may act as a neurotransmitter in the brain to promote feelings of satiety.

Accepted Answer

A) True 
 B)False

Question 12

Inhibition of neuropeptide Y synthesis would

Accepted Answer

A) induce euphoriA. 
B) induce obesity. 
C) stimulate leptin secretion. 
D) inhibit eating. 
A) induce euphoriA. 
B) induce obesity. 
C) stimulate leptin secretion. 
D) inhibit eating.

Question 13

Acetylcholine usually induces an excitatory postsynaptic potential when binding to ________ receptors and an inhibitory postsynaptic potential when binding to some ____________ receptors.

Accepted Answer

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

Question 14

What type of proteins are present in gap junctions that form water-filled channels between neurons?

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 15

Which of the following is NOT true of norepinephrine?

Accepted Answer

A) released in both the CNS and PNS 
B) released by sympathetic neurons to smooth muscle,cardiac muscle,and glands 
C) amphetamines stimulate norepinephrine pathways 
D) causes depression in the CNS 
A) released in both the CNS and PNS 
B) released by sympathetic neurons to smooth muscle,cardiac muscle,and glands 
C) amphetamines stimulate norepinephrine pathways 
D) causes depression in the CNS

Question 16

All cells have a membrane potential.

Accepted Answer

A) True 
 B)False

Question 17

Action potential transmission in the PNS is decreased if which cells are damaged?

Accepted Answer

A) astrocytes 
B) microglia 
C) oligodendrocytes 
D) Schwann cells 
A) astrocytes 
B) microglia 
C) oligodendrocytes 
D) Schwann cells

Question 18

Which of the following is NOT a function of astrocytes?

Accepted Answer

A) can take up NT from a synapse 
B) can stimulate or inhibit neurons 
C) needed to form synapses in the CNS 
D) phagocytose foreign material in the CNS 
E) form the blood-brain barrier 
A) can take up NT from a synapse 
B) can stimulate or inhibit neurons 
C) needed to form synapses in the CNS 
D) phagocytose foreign material in the CNS 
E) form the blood-brain barrier

Question 19

Glycine and GABA stimulate opening of Cl- channels.

Accepted Answer

A) True 
 B)False

Question 20

In a ligand-gated channel,the neurotransmitter receptor and the channel are separate proteins.

Accepted Answer

A) True 
 B)False

Gliotransmitters

At what region of the neuron are action potentials first produced?

Degeneration of spinal motor neurons in adults may be due to a lack of ____________ factor.

Which of the following is true of axons?

Most synapses in the body are electrical.

Which ion's movements is responsible for repolarization?

The most numerous of all cells of CNS nervous tissue are the

Atropine is an antagonist to nicotine.

Schwann cells and oligodendrocytes have similar functions.

Postsynaptic inhibition is caused by neurotransmitters that produce hyperpolarization.

CCK (cholecystokinin)may act as a neurotransmitter in the brain to promote feelings of satiety.

Inhibition of neuropeptide Y synthesis would

Acetylcholine usually induces an excitatory postsynaptic potential when binding to receptors and an inhibitory postsynaptic potential when binding to some ____ receptors.

What type of proteins are present in gap junctions that form water-filled channels between neurons?

Which of the following is NOT true of norepinephrine?

All cells have a membrane potential.

Action potential transmission in the PNS is decreased if which cells are damaged?

Which of the following is NOT a function of astrocytes?

Glycine and GABA stimulate opening of Cl^- channels.

In a ligand-gated channel,the neurotransmitter receptor and the channel are separate proteins.

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

Exam 7: The Nervous System: Neurons and Synapses

Gliotransmitters

At what region of the neuron are action potentials first produced?

Degeneration of spinal motor neurons in adults may be due to a lack of ____________ factor.

Which of the following is true of axons?

Most synapses in the body are electrical.

Which ion's movements is responsible for repolarization?

The most numerous of all cells of CNS nervous tissue are the

Atropine is an antagonist to nicotine.

Schwann cells and oligodendrocytes have similar functions.

Postsynaptic inhibition is caused by neurotransmitters that produce hyperpolarization.

CCK (cholecystokinin)may act as a neurotransmitter in the brain to promote feelings of satiety.

Inhibition of neuropeptide Y synthesis would

Acetylcholine usually induces an excitatory postsynaptic potential when binding to ________ receptors and an inhibitory postsynaptic potential when binding to some ____________ receptors.

What type of proteins are present in gap junctions that form water-filled channels between neurons?

Which of the following is NOT true of norepinephrine?

All cells have a membrane potential.

Action potential transmission in the PNS is decreased if which cells are damaged?

Which of the following is NOT a function of astrocytes?

Glycine and GABA stimulate opening of Cl- channels.

In a ligand-gated channel,the neurotransmitter receptor and the channel are separate proteins.

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

Acetylcholine usually induces an excitatory postsynaptic potential when binding to receptors and an inhibitory postsynaptic potential when binding to some ____ receptors.

Glycine and GABA stimulate opening of Cl^- channels.