Question 1

________ neurons form the afferent division of the PNS.

Accepted Answer

A) Visceral sensory 
B) Sensory 
C) Neural sensory 
D) Somatic sensory 
E) Motor 
A) Visceral sensory 
B) Sensory 
C) Neural sensory 
D) Somatic sensory 
E) Motor

Question 2

Which of the following is a type of glial cell found in the peripheral nervous system?

Accepted Answer

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

Question 3

Damage to ependymal cells would most likely affect the

Accepted Answer

A) formation of myelin sheaths. 
B) formation of cerebrospinal fluid. 
C) formation of ganglia. 
D) repair of axons. 
E) transport of neurotransmitters within axons. 
A) formation of myelin sheaths. 
B) formation of cerebrospinal fluid. 
C) formation of ganglia. 
D) repair of axons. 
E) transport of neurotransmitters within axons.

Question 4

________ monitor the position of skeletal muscles and joints.(Note: Be sure to capitalize the first letter of your answer).

Accepted Answer

The answer of ________ monitor the position of skeletal muscles...

Question 5

Functions of astrocytes include all of the following,except

Accepted Answer

A) maintaining the blood-brain barrier. 
B) conducting action potentials. 
C) guiding neuron development. 
D) responding to neural tissue damage. 
E) forming a three-dimensional framework for the CNS. 
A) maintaining the blood-brain barrier. 
B) conducting action potentials. 
C) guiding neuron development. 
D) responding to neural tissue damage. 
E) forming a three-dimensional framework for the CNS.

Question 6

Figure 12-2 The Nerve Action Potential
Use Figure 12-2 to answer the following questions:
-What is occurring in the area between #2 and #3?

Accepted Answer

A) An excitatory graded potential is occurring. 
B) Potassium ions are entering the axon and causing depolarization. 
C) Chemically-gated sodium channels are open and sodium is diffusing into the axon. 
D) Sodium ions are entering the axon and causing depolarization. 
E) Repolarization of the axon due to sodium ions leaving the axon is occurring. 
A) An excitatory graded potential is occurring. 
B) Potassium ions are entering the axon and causing depolarization. 
C) Chemically-gated sodium channels are open and sodium is diffusing into the axon. 
D) Sodium ions are entering the axon and causing depolarization. 
E) Repolarization of the axon due to sodium ions leaving the axon is occurring.

Question 7

Sensory neurons of the PNS are

Accepted Answer

A) unipolar. 
B) bipolar. 
C) anaxonic. 
D) multipolar. 
E) tripolar. 
A) unipolar. 
B) bipolar. 
C) anaxonic. 
D) multipolar. 
E) tripolar.

Question 8

Neurotransmitters ready for release are stored in synaptic

Accepted Answer

A) telodendria. 
B) terminals. 
C) vesicles. 
D) mitochondria. 
E) neurosomes. 
A) telodendria. 
B) terminals. 
C) vesicles. 
D) mitochondria. 
E) neurosomes.

Question 9

Which of the following is a recognized class of opioid neuromodulators?

Accepted Answer

A) endorphins 
B) enkephalins 
C) endomorphins 
D) dynorphins 
E) All of the answers are correct. 
A) endorphins 
B) enkephalins 
C) endomorphins 
D) dynorphins 
E) All of the answers are correct.

Question 10

The sum of the electrical and chemical forces acting on an ion is known as its ________.

Accepted Answer

electroche

Question 11

The period during which an excitable membrane cannot respond to further stimulation is the ________.

Accepted Answer

absolute r

Question 12

Which of the following is the most important excitatory neurotransmitter in the brain that is important in learning and memory?

Accepted Answer

A) glutamate 
B) gamma aminobutyric acid 
C) serotonin 
D) noradrenaline 
E) glycine 
A) glutamate 
B) gamma aminobutyric acid 
C) serotonin 
D) noradrenaline 
E) glycine

Question 13

A threshold stimulus is the

Accepted Answer

A) depolarization necessary to cause an action potential. 
B) peak of an action potential. 
C) hyperpolarization of an axon. 
D) resting potential. 
E) electrical current that crosses the synaptic cleft. 
A) depolarization necessary to cause an action potential. 
B) peak of an action potential. 
C) hyperpolarization of an axon. 
D) resting potential. 
E) electrical current that crosses the synaptic cleft.

Question 14

Branches that may occur along an axon are called

Accepted Answer

A) telodendria. 
B) synaptic terminals. 
C) collaterals. 
D) hillocks. 
E) synapses. 
A) telodendria. 
B) synaptic terminals. 
C) collaterals. 
D) hillocks. 
E) synapses.

Question 15

Which of the following is not a recognized structural classification for neurons?

Accepted Answer

A) anaxonic 
B) bipolar 
C) multipolar 
D) pseudopolar 
E) unipolar 
A) anaxonic 
B) bipolar 
C) multipolar 
D) pseudopolar 
E) unipolar

Question 16

Figure 12-2 The Nerve Action Potential
Use Figure 12-2 to answer the following questions:
-Which area of the graph occurs when there is a sudden rush of sodium ions into the neuron?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 17

________ are nerves that connect to the brain.(Note: Be sure to capitalize the first letter of your answer).

Accepted Answer

The answer of ________ are nerves that connect to the...

Question 18

How would a chemical that prevents the opening of voltage-regulated Na+ channels affect the function of a neuron?

Accepted Answer

A) neuron will only be able to hyperpolarize 
B) neuron will depolarize more rapidly 
C) action potentials will lack a repolarization phase 
D) neuron will automatically and repeatedly produce graded potentials 
E) neuron will only be capable of producing graded potentials 
A) neuron will only be able to hyperpolarize 
B) neuron will depolarize more rapidly 
C) action potentials will lack a repolarization phase 
D) neuron will automatically and repeatedly produce graded potentials 
E) neuron will only be capable of producing graded potentials

Question 19

Integral membrane proteins that connect electrical synapses are called

Accepted Answer

A) connexons. 
B) receptors. 
C) desmosomes. 
D) sodium channels. 
E) synapsins. 
A) connexons. 
B) receptors. 
C) desmosomes. 
D) sodium channels. 
E) synapsins.

Question 20

The largest and most numerous of the glial cells in the central nervous system are the

Accepted Answer

A) astrocytes. 
B) satellite cells. 
C) oligodendrocytes. 
D) microglia. 
E) ependymal cells. 
A) astrocytes. 
B) satellite cells. 
C) oligodendrocytes. 
D) microglia. 
E) ependymal cells.

Exam 12: Neural Tissue

________ neurons form the afferent division of the PNS.

Which of the following is a type of glial cell found in the peripheral nervous system?

Damage to ependymal cells would most likely affect the

________ monitor the position of skeletal muscles and joints.(Note: Be sure to capitalize the first letter of your answer).

Functions of astrocytes include all of the following,except

Figure 12-2 The Nerve Action Potential Use Figure 12-2 to answer the following questions: -What is occurring in the area between #2 and #3?

Sensory neurons of the PNS are

Neurotransmitters ready for release are stored in synaptic

Which of the following is a recognized class of opioid neuromodulators?

The sum of the electrical and chemical forces acting on an ion is known as its ________.

The period during which an excitable membrane cannot respond to further stimulation is the ________.

Which of the following is the most important excitatory neurotransmitter in the brain that is important in learning and memory?

A threshold stimulus is the

Branches that may occur along an axon are called

Which of the following is not a recognized structural classification for neurons?

Figure 12-2 The Nerve Action Potential Use Figure 12-2 to answer the following questions: -Which area of the graph occurs when there is a sudden rush of sodium ions into the neuron?

________ are nerves that connect to the brain.(Note: Be sure to capitalize the first letter of your answer).

How would a chemical that prevents the opening of voltage-regulated Na+ channels affect the function of a neuron?

Integral membrane proteins that connect electrical synapses are called

The largest and most numerous of the glial cells in the central nervous system are the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration I: Sensory Pathways and the Somatic Nervous System

Neural Integration Ii: the Autonomic Nervous System and

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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