Question 1

________ are processes that conduct electric signals toward the cell body.

Accepted Answer

The answer of ________ are processes that conduct electric signals...

Question 2

-The figure illustrates events at a chemical synapse. What does "C" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca2+ channel
E) Presynaptic terminal

Accepted Answer

Question 3

The junction between two neurons is a ________.

Accepted Answer

A)  ganglia 
B)  synapse 
C)  fascicle 
D)  node of Ranvier 
E)  neuromuscular junction 
A)  ganglia 
B)  synapse 
C)  fascicle 
D)  node of Ranvier 
E)  neuromuscular junction

Question 4

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 5

Match the term with the correct definition.
-Repolarization

Accepted Answer

A) Small change in the resting membrane potential confined to a small area 
B) Charge difference across the plasma membrane when the cell is in an unstimulated state 
C) Larger change in resting membrane potential that spreads over entire surface of a cell 
D) Membrane becomes more positive when Na+ diffuse into cell 
E) Return to the resting membrane potential 
A) Small change in the resting membrane potential confined to a small area 
B) Charge difference across the plasma membrane when the cell is in an unstimulated state 
C) Larger change in resting membrane potential that spreads over entire surface of a cell 
D) Membrane becomes more positive when Na+ diffuse into cell 
E) Return to the resting membrane potential

Question 6

Which of the following is NOT true about astrocytes?

Accepted Answer

A)  They can wall off an injury site to prevent spread of inflammation. 
B)  They can prevent toxic substances from entering brain tissue. 
C)  They can release chemicals that promote formation of synapses. 
D)  They can aid in the regeneration of injured neurons. 
A)  They can wall off an injury site to prevent spread of inflammation. 
B)  They can prevent toxic substances from entering brain tissue. 
C)  They can release chemicals that promote formation of synapses. 
D)  They can aid in the regeneration of injured neurons.

Question 7

-The figure illustrates events at a chemical synapse. What does "B" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca2+ channel
E) Presynaptic terminal

Accepted Answer

Question 8

Multiple sclerosis is a neurological disorder in which myelin sheaths in the CNS are destroyed. Which of the following neuroglial cells is being damaged in multiple sclerosis?

Accepted Answer

A)  Astrocyte 
B)  Microglia 
C)  Oligodendrocyte 
D)  Ependymal cell 
E)  Schwann cells 
A)  Astrocyte 
B)  Microglia 
C)  Oligodendrocyte 
D)  Ependymal cell 
E)  Schwann cells

Question 9

An IPSP is inhibitory because it

Accepted Answer

A)  changes the threshold of the neuron. 
B)  hyperpolarizes the postsynaptic membrane. 
C)  prevents Ca2+ entry into the presynaptic terminal. 
D)  reduces the amount of neurotransmitter released by the presynaptic terminal. 
E)  depolarizes the postsynaptic membrane. 
A)  changes the threshold of the neuron. 
B)  hyperpolarizes the postsynaptic membrane. 
C)  prevents Ca2+ entry into the presynaptic terminal. 
D)  reduces the amount of neurotransmitter released by the presynaptic terminal. 
E)  depolarizes the postsynaptic membrane.

Question 10

-Identify structure "A" on the neuron.
A) Schwann cell
B) Node of Ranvier
C) Neuron cell body (soma)
D) Dendrites
E) Axon

Accepted Answer

The answer of  
-Identify structure "A" on the neuron.
A)...

Question 11

Identify the mechanisms by which neuromodulators alter synaptic transmission. (Check all that apply.)

Accepted Answer

A)  Changing neurotransmitter receptor numbers 
B)  Increasing amounts of neurotransmitter released 
C)  Affecting breakdown of neurotransmitters 
D)  Affecting the removal of neurotransmitters 
A)  Changing neurotransmitter receptor numbers 
B)  Increasing amounts of neurotransmitter released 
C)  Affecting breakdown of neurotransmitters 
D)  Affecting the removal of neurotransmitters

Question 12

Saltatory conduction of an action potential means that

Accepted Answer

A)  once one action potential is created, it moves down the axon. 
B)  the whole axon depolarizes at the same time. 
C)  one action potential stimulates the production of a new action potential at the adjacent site. 
D)  an action potential is conducted from one node of Ranvier to the next node. 
A)  once one action potential is created, it moves down the axon. 
B)  the whole axon depolarizes at the same time. 
C)  one action potential stimulates the production of a new action potential at the adjacent site. 
D)  an action potential is conducted from one node of Ranvier to the next node.

Exam 11: Functional Organization of Nervous Tissue

________ are processes that conduct electric signals toward the cell body.

-The figure illustrates events at a chemical synapse. What does "C" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca2+ channel E) Presynaptic terminal

The junction between two neurons is a ________.

A neuromodulator

Match the term with the correct definition. -Repolarization

Which of the following is NOT true about astrocytes?

-The figure illustrates events at a chemical synapse. What does "B" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca2+ channel E) Presynaptic terminal

Multiple sclerosis is a neurological disorder in which myelin sheaths in the CNS are destroyed. Which of the following neuroglial cells is being damaged in multiple sclerosis?

An IPSP is inhibitory because it

-Identify structure "A" on the neuron. A) Schwann cell B) Node of Ranvier C) Neuron cell body (soma) D) Dendrites E) Axon

Identify the mechanisms by which neuromodulators alter synaptic transmission. (Check all that apply.)

Saltatory conduction of an action potential means that

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint 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-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

-The figure illustrates events at a chemical synapse. What does "C" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal

-The figure illustrates events at a chemical synapse. What does "B" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal