Question 1

Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is not true of graded potentials?

Accepted Answer

A)  They increase amplitude as they move away from the stimulus point. 
B)  They can be called postsynaptic potentials. 
C)  They are short- lived. 
D)  They can form on receptor endings. 
A)  They increase amplitude as they move away from the stimulus point. 
B)  They can be called postsynaptic potentials. 
C)  They are short- lived. 
D)  They can form on receptor endings.

Question 3

What mechanism is responsible for axonal transport?

Accepted Answer

ATP- dependent "motor" protein

Question 4

Figure 11.2Using Figure 11.2, match the following:
-Synaptic vesicles.

Accepted Answer

The answer of   Figure 11.2Using Figure 11.2, match...

Question 5

Figure 11.2Using Figure 11.2, match the following:
-When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called summation.

Accepted Answer

The answer of   Figure 11.2Using Figure 11.2, match...

Question 6

Immediately after an action potential has peaked, which cellular gates open?

Accepted Answer

A)  calcium 
B)  chloride 
C)  potassium 
D)  sodium 
A)  calcium 
B)  chloride 
C)  potassium 
D)  sodium

Question 7

Schwann cells are functionally similar to .

Accepted Answer

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

Question 8

Figure 11.1Using Figure 11.1, match the following:
-That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

Accepted Answer

The answer of   Figure 11.1Using Figure 11.1, match...

Question 9

Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor.

Accepted Answer

A) True 
 B)False

Question 10

Enkephalins and endorphins are peptides that act like morphine.

Accepted Answer

A) True 
 B)False

Question 11

A neuron that has as its primary function the job of connecting other neurons is called a(n)
)

Accepted Answer

A)  afferent neuron 
B)  glial cell 
C)  association neuron 
D)  efferent neuron 
A)  afferent neuron 
B)  glial cell 
C)  association neuron 
D)  efferent neuron

Question 12

Define synaptic delay.

Accepted Answer

Synaptic delay reflects the ti

Question 13

What is the role of acetylcholinesterase?

Accepted Answer

A)  stimulate the production of acetylcholine 
B)  destroy ACh a brief period after its release by the axon endings 
C)  act as a transmitting agent 
D)  amplify or enhance the effect of ACh 
A)  stimulate the production of acetylcholine 
B)  destroy ACh a brief period after its release by the axon endings 
C)  act as a transmitting agent 
D)  amplify or enhance the effect of ACh

Question 14

Why does a hyperpolarization phase generally follow a repolarization phase in an action potential?

Accepted Answer

Immediately after an action potential th

Question 15

Which of the following describes the nervous system integrative function?

Accepted Answer

A)  senses changes in the environment 
B)  responds to stimuli by gland secretion or muscle contraction 
C)  analyzes sensory information, stores information, makes decisions 
A)  senses changes in the environment 
B)  responds to stimuli by gland secretion or muscle contraction 
C)  analyzes sensory information, stores information, makes decisions

Question 16

The all- or- none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place.

Accepted Answer

A) True 
 B)False

Question 17

A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons.

Accepted Answer

A) True 
 B)False

Question 18

What does the central nervous system use to determine the strength of a stimulus?

Accepted Answer

A)  type of stimulus receptor 
B)  origin of the stimulus 
C)  frequency of action potentials 
D)  size of action potentials 
A)  type of stimulus receptor 
B)  origin of the stimulus 
C)  frequency of action potentials 
D)  size of action potentials

Question 19

Nerve cell adhesion molecules (N- CAMs) .

Accepted Answer

A)  release nerve growth factor 
B)  are crucial for the development of neural connections 
C)  are found on "pathfinder" neurons 
D)  are crucial in the production of neurotransmitters 
A)  release nerve growth factor 
B)  are crucial for the development of neural connections 
C)  are found on "pathfinder" neurons 
D)  are crucial in the production of neurotransmitters

Question 20

Which of the following correctly describes a graded potential?

Accepted Answer

A)  amplitude of various sizes 
B)  long distance signaling 
C)  voltage stimulus to initiate 
D)  voltage regulated repolarization 
A)  amplitude of various sizes 
B)  long distance signaling 
C)  voltage stimulus to initiate 
D)  voltage regulated repolarization

Exam 11: Fundamentals of the Nervous System and Nervous Tissue

Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system.

Which of the following is not true of graded potentials?

What mechanism is responsible for axonal transport?

Figure 11.2Using Figure 11.2, match the following: -Synaptic vesicles.

Figure 11.2Using Figure 11.2, match the following: -When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called summation.

Immediately after an action potential has peaked, which cellular gates open?

Schwann cells are functionally similar to .

Figure 11.1Using Figure 11.1, match the following: -That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor.

Enkephalins and endorphins are peptides that act like morphine.

A neuron that has as its primary function the job of connecting other neurons is called a(n) )

Define synaptic delay.

What is the role of acetylcholinesterase?

Why does a hyperpolarization phase generally follow a repolarization phase in an action potential?

Which of the following describes the nervous system integrative function?

The all- or- none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place.

A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons.

What does the central nervous system use to determine the strength of a stimulus?

Nerve cell adhesion molecules (N- CAMs) .

Which of the following correctly describes a graded potential?

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defensives

The Respiratory System

The Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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