Question 1

Match the neuroglial cell with its function.
-ependymal cells

Accepted Answer

A) influence function of blood-brain barrier 
B) macrophages in CNS 
C) produce cerebrospinal fluid 
D) form myelin sheath around axons in CNS 
E) form myelin sheath around part of the axon in the PNS 
A) influence function of blood-brain barrier 
B) macrophages in CNS 
C) produce cerebrospinal fluid 
D) form myelin sheath around axons in CNS 
E) form myelin sheath around part of the axon in the PNS

Question 2

Low levels of ___ can have dire consequences on the functioning of neurons because of its role in membrane repolarization.

Accepted Answer

A)  sodium ions 
B)  potassium ions 
C)  chloride ions 
D)  hydrogen ions 
A)  sodium ions 
B)  potassium ions 
C)  chloride ions 
D)  hydrogen ions

Question 3

Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

Accepted Answer

A)  Activation gates of Na+ ion channels begin to close. 
B)  Inactivation gates of Na+ ion channels begin to open. 
C)  A positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open. 
D)  K+ ion channels begin to close. 
E)  Inactivation gates of Na+ ion channels begin to open and a positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open. 
A)  Activation gates of Na+ ion channels begin to close. 
B)  Inactivation gates of Na+ ion channels begin to open. 
C)  A positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open. 
D)  K+ ion channels begin to close. 
E)  Inactivation gates of Na+ ion channels begin to open and a positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open.

Question 4

The figure illustrates the Action Potential. What does "E" 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 5

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 6

Match the term with the correct definition.
-depolarization

Accepted Answer

A) a small change in the resting membrane potential confined to a small area 
B) a charge difference across the plasma membrane when the cell is in an unstimulated state 
C) a larger change in resting membrane potential that spreads over entire surface of a cell 
D) membrane becomes more positive when sodium ions diffuse into cell 
E) return to the resting membrane potential 
A) a small change in the resting membrane potential confined to a small area 
B) a charge difference across the plasma membrane when the cell is in an unstimulated state 
C) a larger change in resting membrane potential that spreads over entire surface of a cell 
D) membrane becomes more positive when sodium ions diffuse into cell 
E) return to the resting membrane potential

Question 7

The figure illustrates the Action Potential. What does "A" 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 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

When two or more presynaptic neurons synapse with a single postsynaptic neuron in the CNS, a(n) _______ pathway is formed.

Accepted Answer

A)  convergent 
B)  divergent 
C)  reverberating 
D)  somatic 
E)  sensory 
A)  convergent 
B)  divergent 
C)  reverberating 
D)  somatic 
E)  sensory

Question 10

Which of the following is mismatched?

Accepted Answer

A)  central nervous system - brain 
B)  autonomic nervous system - sympathetic and parasympathetic divisions 
C)  peripheral nervous system - spinal nerves 
D)  somatic nervous system - sensory division of PNS 
E)  peripheral nervous system - sensory and motor divisions 
A)  central nervous system - brain 
B)  autonomic nervous system - sympathetic and parasympathetic divisions 
C)  peripheral nervous system - spinal nerves 
D)  somatic nervous system - sensory division of PNS 
E)  peripheral nervous system - sensory and motor divisions

Question 11

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 12

Which of the following statements regarding neuroglia is false?

Accepted Answer

A)  Neuroglia serve as the major supporting tissue in the CNS. 
B)  Neuroglia form part of the blood-brain barrier. 
C)  Neuroglia produce action potentials for skeletal muscles. 
D)  Neuroglia form myelin sheaths around some axons. 
E)  Neuroglia produce cerebrospinal fluid. 
A)  Neuroglia serve as the major supporting tissue in the CNS. 
B)  Neuroglia form part of the blood-brain barrier. 
C)  Neuroglia produce action potentials for skeletal muscles. 
D)  Neuroglia form myelin sheaths around some axons. 
E)  Neuroglia produce cerebrospinal fluid.

Question 13

Clusters of gray matter deep within the brain are called

Accepted Answer

A)  cortices. 
B)  nerves. 
C)  ganglia. 
D)  nuclei. 
A)  cortices. 
B)  nerves. 
C)  ganglia. 
D)  nuclei.

Question 14

A neuron with several dendrites and a single axon would be called a ____________ neuron.
multipolar

Accepted Answer

The answer of A neuron with several dendrites and a...

Question 15

Protein synthesis in neurons occurs in

Accepted Answer

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

Question 16

A local anesthetic such as Novocaine decreases membrane permeability to Na+ ions. The use of this anesthetic will

Accepted Answer

A)  block sensory input into the CNS. 
B)  enhance the development of EPSPs. 
C)  cause RMP to move closer to threshold. 
D)  cause Cl- ions to enter cells instead of Na+ ions. 
E)  depolarize the cell. 
A)  block sensory input into the CNS. 
B)  enhance the development of EPSPs. 
C)  cause RMP to move closer to threshold. 
D)  cause Cl- ions to enter cells instead of Na+ ions. 
E)  depolarize the cell.

Question 17

Neurotransmitters

Accepted Answer

A)  stimulate presynaptic terminals. 
B)  remain in the synaptic cleft for long periods of time. 
C)  bind irreversibly to the receptor molecules of the postsynaptic membrane. 
D)  cause the production of action potentials in the postsynaptic membrane. 
E)  do not affect membrane channels in the postsynaptic membrane. 
A)  stimulate presynaptic terminals. 
B)  remain in the synaptic cleft for long periods of time. 
C)  bind irreversibly to the receptor molecules of the postsynaptic membrane. 
D)  cause the production of action potentials in the postsynaptic membrane. 
E)  do not affect membrane channels in the postsynaptic membrane.

Question 18

Nissl bodies are

Accepted Answer

A)  part of a dendrite. 
B)  also called gemmules. 
C)  lipid droplets. 
D)  areas of rough endoplasmic reticulum. 
E)  part of the Golgi apparatus. 
A)  part of a dendrite. 
B)  also called gemmules. 
C)  lipid droplets. 
D)  areas of rough endoplasmic reticulum. 
E)  part of the Golgi apparatus.

Question 19

A neuron is receiving a stimulus which gets stronger and stronger. The result is

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 20

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.

Exam 11: Functional Organization of Nervous Tissue

Match the neuroglial cell with its function. -ependymal cells

Low levels of ___ can have dire consequences on the functioning of neurons because of its role in membrane repolarization.

Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

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

Protein synthesis in neurons occurs in

Match the term with the correct definition. -depolarization

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

The motor neurons responsible for making a fist are

When two or more presynaptic neurons synapse with a single postsynaptic neuron in the CNS, a(n) _______ pathway is formed.

Which of the following is mismatched?

The central nervous system

Which of the following statements regarding neuroglia is false?

Clusters of gray matter deep within the brain are called

A neuron with several dendrites and a single axon would be called a ____________ neuron. multipolar

Protein synthesis in neurons occurs in

A local anesthetic such as Novocaine decreases membrane permeability to Na+ ions. The use of this anesthetic will

Neurotransmitters

Nissl bodies are

A neuron is receiving a stimulus which gets stronger and stronger. The result is

A neuromodulator

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, Electrolyte, and Acid-Based Balance

Reproductive System

Development, Growth, Aging, and Genetics

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