Question 1

-The figure illustrates the Action Potential. What does "B" represent?

Accepted Answer

A)  repolarization 
B)  depolarization 
C)  local potential 
D)  threshold 
E)  afterpotential 
A)  repolarization 
B)  depolarization 
C)  local potential 
D)  threshold 
E)  afterpotential

Question 2

As the strength of a stimulus is increased, the

Accepted Answer

A)  amplitude of the action potential increases. 
B)  duration of the action potential increases. 
C)  frequency of occurrence of action potentials increases. 
D)  resonance of action potentials increases. 
E)  height of the action potentials increases. 
A)  amplitude of the action potential increases. 
B)  duration of the action potential increases. 
C)  frequency of occurrence of action potentials increases. 
D)  resonance of action potentials increases. 
E)  height of the action potentials increases.

Question 3

-The figure is a process figure of the chemical synapse. What does "A" represent?

Accepted Answer

A)  postsynaptic membrane 
B)  synaptic cleft 
C)  synaptic vesicle 
D)  voltage-gated calcium channel 
E)  presynaptic terminal 
A)  postsynaptic membrane 
B)  synaptic cleft 
C)  synaptic vesicle 
D)  voltage-gated calcium channel 
E)  presynaptic terminal

Question 4

Which of the following is true?

Accepted Answer

A)  The resting plasma membrane is more permeable to Na+ than K+. 
B)  The resting membrane potential never reaches an equilibrium point. 
C)  The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell. 
D)  Negatively charged Cl- ions are attracted by negative charges in the cell. 
E)  The purpose of the sodium-potassium exchange pump is to create an equilibrium of ion concentrations. 
A)  The resting plasma membrane is more permeable to Na+ than K+. 
B)  The resting membrane potential never reaches an equilibrium point. 
C)  The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell. 
D)  Negatively charged Cl- ions are attracted by negative charges in the cell. 
E)  The purpose of the sodium-potassium exchange pump is to create an equilibrium of ion concentrations.

Question 5

The autonomic nervous system

Accepted Answer

A)  stimulates skeletal muscle contractions. 
B)  has two sets of neurons in a series. 
C)  is involved in problem solving. 
D)  is under voluntary control. 
E)  does not include the central nervous system. 
A)  stimulates skeletal muscle contractions. 
B)  has two sets of neurons in a series. 
C)  is involved in problem solving. 
D)  is under voluntary control. 
E)  does not include the central nervous system.

Question 6

Digestion of food is regulated by the

Accepted Answer

A)  sensory division. 
B)  sympathetic division of the ANS. 
C)  parasympathetic division of the ANS. 
D)  somatic nervous system. 
E)  None of these choices are correct. 
A)  sensory division. 
B)  sympathetic division of the ANS. 
C)  parasympathetic division of the ANS. 
D)  somatic nervous system. 
E)  None of these choices are correct.

Question 7

During depolarization of the plasma membrane,

Accepted Answer

A)  sodium ions move rapidly into the cell. 
B)  potassium ions move rapidly out of the cell. 
C)  membrane permeability to sodium ions decreases. 
D)  the outside of the cell becomes positively charged relative to the inside. 
E)  sodium ions move rapidly out of the cell. 
A)  sodium ions move rapidly into the cell. 
B)  potassium ions move rapidly out of the cell. 
C)  membrane permeability to sodium ions decreases. 
D)  the outside of the cell becomes positively charged relative to the inside. 
E)  sodium ions move rapidly out of the cell.

Question 8

The motor neurons responsible for making a fist are

Accepted Answer

A)  tripolar. 
B)  bipolar. 
C)  multipolar. 
D)  pseudo-unipolar. 
E)  None of these choices are correct. 
A)  tripolar. 
B)  bipolar. 
C)  multipolar. 
D)  pseudo-unipolar. 
E)  None of these choices are correct.

Question 9

If the ECF around a nerve cell is replaced with an isotonic saline solution that contains potassium ions and other solutes at concentrations very close to the ECF concentrations of a normal cell, the result is

Accepted Answer

A)  no resting membrane potential. 
B)  hyperpolarized membrane. 
C)  depolarized membrane. 
D)  a resting membrane potential close to its normal value. 
E)  None of these choices is correct. 
A)  no resting membrane potential. 
B)  hyperpolarized membrane. 
C)  depolarized membrane. 
D)  a resting membrane potential close to its normal value. 
E)  None of these choices is correct.

Question 10

A neuromodulator

Accepted Answer

A)  acts as a neurotransmitter. 
B)  inactivates neurotransmitters. 
C)  is a receptor site for a neurotransmitter. 
D)  has no influence on the amount of neurotransmitter released. 
E)  is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters. 
A)  acts as a neurotransmitter. 
B)  inactivates neurotransmitters. 
C)  is a receptor site for a neurotransmitter. 
D)  has no influence on the amount of neurotransmitter released. 
E)  is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters.

Question 11

Gray matter consists of bundles of myelinated axons.

Accepted Answer

A) True 
 B)False

Question 12

The opening of more and more Na+ ion channels during depolarization

Accepted Answer

A)  is the result of the sodium-potassium exchange pump. 
B)  is an example of a positive feedback cycle. 
C)  is possible only if K+ channels remain closed. 
D)  is the cause of the afterpotential. 
E)  is an example of a negative feedback cycle. 
A)  is the result of the sodium-potassium exchange pump. 
B)  is an example of a positive feedback cycle. 
C)  is possible only if K+ channels remain closed. 
D)  is the cause of the afterpotential. 
E)  is an example of a negative feedback cycle.

Question 13

A neuroglial cell that is a major component of the blood-brain barrier is the

Accepted Answer

A)  astrocyte. 
B)  microglial cell. 
C)  oligodendrocyte. 
D)  ependymal cell. 
E)  macrophage. 
A)  astrocyte. 
B)  microglial cell. 
C)  oligodendrocyte. 
D)  ependymal cell. 
E)  macrophage.

Question 14

Protein synthesis in neurons occurs in

Accepted Answer

A)  axons. 
B)  dendrites. 
C)  cell bodies or soma. 
D)  terminal boutons. 
E)  node of Ranvier. 
A)  axons. 
B)  dendrites. 
C)  cell bodies or soma. 
D)  terminal boutons. 
E)  node of Ranvier.

Question 15

Neurotransmitters are released from the

Accepted Answer

A)  epineurium. 
B)  synaptic cleft. 
C)  presynaptic terminal. 
D)  postsynaptic membrane. 
E)  calcium channels. 
A)  epineurium. 
B)  synaptic cleft. 
C)  presynaptic terminal. 
D)  postsynaptic membrane. 
E)  calcium channels.

Question 16

____________ are neuroglia cells that are macrophages.

Accepted Answer

The answer of ____________ are neuroglia cells that are macrophages....

Question 17

The peripheral nervous system includes the

Accepted Answer

A)  brain. 
B)  spinal cord. 
C)  cranial nerves. 
D)  blood-brain barrier. 
E)  cerebellum. 
A)  brain. 
B)  spinal cord. 
C)  cranial nerves. 
D)  blood-brain barrier. 
E)  cerebellum.

Question 18

The function of acetylcholinesterase is to

Accepted Answer

A)  open voltage-gated sodium gates. 
B)  breakdown acetylcholine in the synapse. 
C)  produce an IPSP on the postsynaptic membrane. 
D)  metabolize norepinephrine. 
A)  open voltage-gated sodium gates. 
B)  breakdown acetylcholine in the synapse. 
C)  produce an IPSP on the postsynaptic membrane. 
D)  metabolize norepinephrine.

Question 19

The central nervous system

Accepted Answer

A)  is the site for processing information. 
B)  initiates visual and auditory stimuli. 
C)  consists of 43 pairs of nerves. 
D)  is totally involuntary. 
E)  does not interact with the peripheral nervous system. 
A)  is the site for processing information. 
B)  initiates visual and auditory stimuli. 
C)  consists of 43 pairs of nerves. 
D)  is totally involuntary. 
E)  does not interact with the peripheral nervous system.

Question 20

In hyperpolarization

Accepted Answer

A)  K+ ions tend to diffuse out of the cell. 
B)  the plasma membrane's permeability to K+ decreases. 
C)  the resting membrane potential moves closer to zero. 
D)  Na+ ions enter the cell in large numbers. 
E)  the resting membrane potential becomes more positive. 
A)  K+ ions tend to diffuse out of the cell. 
B)  the plasma membrane's permeability to K+ decreases. 
C)  the resting membrane potential moves closer to zero. 
D)  Na+ ions enter the cell in large numbers. 
E)  the resting membrane potential becomes more positive.

Exam 11: Functional Organization of Nervous Tissue

-The figure illustrates the Action Potential. What does "B" represent?

As the strength of a stimulus is increased, the

-The figure is a process figure of the chemical synapse. What does "A" represent?

Which of the following is true?

The autonomic nervous system

Digestion of food is regulated by the

During depolarization of the plasma membrane,

The motor neurons responsible for making a fist are

If the ECF around a nerve cell is replaced with an isotonic saline solution that contains potassium ions and other solutes at concentrations very close to the ECF concentrations of a normal cell, the result is

A neuromodulator

Gray matter consists of bundles of myelinated axons.

The opening of more and more Na+ ion channels during depolarization

A neuroglial cell that is a major component of the blood-brain barrier is the

Protein synthesis in neurons occurs in

Neurotransmitters are released from the

____________ are neuroglia cells that are macrophages.

The peripheral nervous system includes the

The function of acetylcholinesterase is to

The central nervous system

In hyperpolarization

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

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