Question 1

What is the most common inhibitory neurotransmitter in the brain?

Accepted Answer

A)  γ-aminobutyric acid (GAB
A)  
B)  Noradrenaline 
C)  Epinephrine 
D)  Acetylcholine 
E)  Norepinephrine 
A)  γ-aminobutyric acid (GAB
A)  
B)  Noradrenaline 
C)  Epinephrine 
D)  Acetylcholine 
E)  Norepinephrine A

Question 2

In order to regenerate,a peripheral nerve fiber must have which of the following?

Accepted Answer

A)  All dendrites intact 
B)  At least half the length of the fiber intact 
C)  At least the entire axon and neurilemma intact 
D)  The neurosoma and at least some neurilemma intact 
E)  At least part of the neurosoma intact 
A)  All dendrites intact 
B)  At least half the length of the fiber intact 
C)  At least the entire axon and neurilemma intact 
D)  The neurosoma and at least some neurilemma intact 
E)  At least part of the neurosoma intact D

Question 3

Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons.These neurons secrete an inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain.What neurotransmitter is this?

Accepted Answer

A)  Serotonin 
B)  Dopamine 
C)  Acetylcholine 
D)  GABA 
E)  Glutamate 
A)  Serotonin 
B)  Dopamine 
C)  Acetylcholine 
D)  GABA 
E)  Glutamate B

Question 4

Where are unmyelinated nerve fibers surrounded by Schwann cells?

Accepted Answer

A)  In the PNS 
B)  In the CNS 
C)  In the PNS and CNS 
D)  Nowhere.Unmyelinated nerve fibers are never surrounded by Schwann cells. 
A)  In the PNS 
B)  In the CNS 
C)  In the PNS and CNS 
D)  Nowhere.Unmyelinated nerve fibers are never surrounded by Schwann cells.

Question 5

Any two EPSPs will override one IPSP.

Accepted Answer

A) True 
 B)False

Question 6

While both systems maintain homeostasis,how does the nervous system differ from the endocrine system?

Accepted Answer

A)  The nervous system releases neurotransmitters between cells,while the endocrine system releases hormones into the blood. 
B)  The nervous system releases neurotransmitters into the blood,while the endocrine system releases hormones between cells. 
C)  The nervous system releases hormones between cells,while the endocrine system releases neurotransmitters into the blood. 
D)  The nervous system releases hormones into the blood,while the endocrine system releases neurotransmitters between cells. 
A)  The nervous system releases neurotransmitters between cells,while the endocrine system releases hormones into the blood. 
B)  The nervous system releases neurotransmitters into the blood,while the endocrine system releases hormones between cells. 
C)  The nervous system releases hormones between cells,while the endocrine system releases neurotransmitters into the blood. 
D)  The nervous system releases hormones into the blood,while the endocrine system releases neurotransmitters between cells.

Question 7

Inhibitory postsynaptic potentials (IPSPs)are associated with which of the following?

Accepted Answer

A)  Depolarization of the cell membrane 
B)  Repolarization of the cell membrane 
C)  Hyperpolarization of the cell membrane 
D)  No change in the cell membrane potential 
E)  No change of the threshold 
A)  Depolarization of the cell membrane 
B)  Repolarization of the cell membrane 
C)  Hyperpolarization of the cell membrane 
D)  No change in the cell membrane potential 
E)  No change of the threshold

Question 8

Most metabolic and regulatory functions in a neuron happen where?

Accepted Answer

A)  The axon 
B)  The neurosoma 
C)  The dendrites 
D)  The axon hillock 
E)  The Schwann cell 
A)  The axon 
B)  The neurosoma 
C)  The dendrites 
D)  The axon hillock 
E)  The Schwann cell

Question 9

How does a neuron transport enzymes produced in the neurosoma to its axon terminals?

Accepted Answer

A)  Along microtubules 
B)  By diffusion 
C)  Via cytoplasmic streaming 
D)  Through co-transport 
A)  Along microtubules 
B)  By diffusion 
C)  Via cytoplasmic streaming 
D)  Through co-transport

Question 10

Norepinephrine is a monoamine.

Accepted Answer

A) True 
 B)False

Question 11

All of the following are typical characteristics of neurotransmitters except __________.

Accepted Answer

A)  they are synthesized by a presynaptic neuron 
B)  they are released in response to stimulation 
C)  they are released into the bloodstream before reaching the postsynaptic cell 
D)  they bind to specific receptors on the postsynaptic cell 
E)  they alter the physiology of the postsynaptic cell 
A)  they are synthesized by a presynaptic neuron 
B)  they are released in response to stimulation 
C)  they are released into the bloodstream before reaching the postsynaptic cell 
D)  they bind to specific receptors on the postsynaptic cell 
E)  they alter the physiology of the postsynaptic cell

Question 12

A cholinergic synapse uses __________ as its neurotransmitter.

Accepted Answer

A)  monoamine 
B)  acetylcholine 
C)  epinephrine 
D)  norepinephrine 
E)  catecholamine 
A)  monoamine 
B)  acetylcholine 
C)  epinephrine 
D)  norepinephrine 
E)  catecholamine

Question 13

The term "nerve fiber" refers to a(n)__________.

Accepted Answer

A)  nerve cell 
B)  organelle in nerve cells 
C)  organ 
D)  axon 
E)  bundle of macromolecules in nerve cells 
A)  nerve cell 
B)  organelle in nerve cells 
C)  organ 
D)  axon 
E)  bundle of macromolecules in nerve cells

Question 14

Which glial cell is found wrapped around nerve fibers in the PNS?

Accepted Answer

A)  Oligodendrocytes 
B)  Schwann cells 
C)  Satellite cells 
D)  Nodes of Ranvier 
E)  Ependymal cells 
A)  Oligodendrocytes 
B)  Schwann cells 
C)  Satellite cells 
D)  Nodes of Ranvier 
E)  Ependymal cells

Question 15

When the voltage of a plasma membrane shifts from +35 mV towards 0 mV,the cell is __________.

Accepted Answer

A)  depolarizing 
B)  repolarizing 
C)  hyperpolarizing 
D)  reaching the threshold 
E)  exiting the threshold 
A)  depolarizing 
B)  repolarizing 
C)  hyperpolarizing 
D)  reaching the threshold 
E)  exiting the threshold

Question 16

Neurons move material away from the neurosoma by retrograde transport.

Accepted Answer

A) True 
 B)False

Question 17

In the brain,neurons are more abundant than neuroglia.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following are effectors?

Accepted Answer

A)  Receptors 
B)  Stimuli 
C)  Reflexes 
D)  Glands 
E)  Sense organs 
A)  Receptors 
B)  Stimuli 
C)  Reflexes 
D)  Glands 
E)  Sense organs

Question 19

Which of these happens first in an adrenergic synaptic transmission?

Accepted Answer

A)  ATP is converted to cyclic AMP 
B)  Adenylate cyclase is activated 
C)  G protein dissociates from the NE receptor 
D)  G protein binds to adenylate cyclase 
E)  Cyclic AMP induces several effects in the cell 
A)  ATP is converted to cyclic AMP 
B)  Adenylate cyclase is activated 
C)  G protein dissociates from the NE receptor 
D)  G protein binds to adenylate cyclase 
E)  Cyclic AMP induces several effects in the cell

Question 20

Ependymal cells line the inner cavities of the CNS.

Accepted Answer

A) True 
 B)False

Exam 12: Nervous Tissue

What is the most common inhibitory neurotransmitter in the brain?

In order to regenerate,a peripheral nerve fiber must have which of the following?

Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons.These neurons secrete an inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain.What neurotransmitter is this?

Where are unmyelinated nerve fibers surrounded by Schwann cells?

Any two EPSPs will override one IPSP.

While both systems maintain homeostasis,how does the nervous system differ from the endocrine system?

Inhibitory postsynaptic potentials (IPSPs)are associated with which of the following?

Most metabolic and regulatory functions in a neuron happen where?

How does a neuron transport enzymes produced in the neurosoma to its axon terminals?

Norepinephrine is a monoamine.

All of the following are typical characteristics of neurotransmitters except __________.

A cholinergic synapse uses __________ as its neurotransmitter.

The term "nerve fiber" refers to a(n)__________.

Which glial cell is found wrapped around nerve fibers in the PNS?

When the voltage of a plasma membrane shifts from +35 mV towards 0 mV,the cell is __________.

Neurons move material away from the neurosoma by retrograde transport.

In the brain,neurons are more abundant than neuroglia.

Which of the following are effectors?

Which of these happens first in an adrenergic synaptic transmission?

Ependymal cells line the inner cavities of the CNS.

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

Genetics of Cellular Function

Histology

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

The Spinal Cord,spinal Nerves,and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Fluid, electrolyte, and Acidbase Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

Human Development and Aging

Atlas a General Orientation to Human Anatomy

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