Question 1

Neurons that have one dendrite and one axon extending from the cell body are called ________ neurons.

Accepted Answer

A)  multipolar
B)  efferent
C)  bipolar
D)  association
E)  unipolar

Question 2

Which type of neuroglia forms the myelin sheath around some axons of the PNS (peripheral nervous system) ?

Accepted Answer

A)  Schwann cells
B)  Astrocytes
C)  Satellite cells
D)  Oligodendrocytes
E)  Ependymal cells

Question 3

A bundle of nerve fibers is surrounded by a layer of fibrous connective tissue called the

Accepted Answer

A)  epineurium.
B)  fascicle.
C)  endoneurium.
D)  neurilemma.
E)  perineurium.

Question 4

A peripheral process is a structure found only in ________ neurons.

Accepted Answer

A)  bipolar
B)  motor
C)  multipolar
D)  association
E)  unipolar

Question 5

Exchange of nutrients and other substances between CNS neurons and blood vessels is accomplished by

Accepted Answer

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

Question 6

All structural types of neurons contain only one axon.

Accepted Answer

A) True 
 B)False

Question 7

The rarest structural type of neuron is a bipolar neuron.

Accepted Answer

A) True 
 B)False

Question 8

What is found in the posterior root ganglion of a spinal nerve?

Accepted Answer

A)  A cluster of sensory neuron cell bodies
B)  A mass of axons of motor neurons
C)  A cluster of cell bodies of interneurons
D)  A cluster of motor neuron cell bodies
E)  A mass of axons of interneurons

Question 9

Cranial and spinal nerves are part of the central nervous system (CNS).

Accepted Answer

A) True 
 B)False

Question 10

Which type of neuron conducts nerve impulses from the central nervous system to muscles or glands?

Accepted Answer

A)  Afferent neurons
B)  Association neurons
C)  Sensory neurons
D)  Interneurons
E)  Motor neurons

Question 11

Pertaining to the nervous system, what is an effector?

Accepted Answer

A)  A cell or nerve ending that transmits sensory information to a sensory neuron
B)  An interneuron
C)  A motor neuron
D)  A type of neuroglia that physically supports neurons in the CNS
E)  A muscle or gland that receives a nerve impulse from a motor neuron

Question 12

Nodes of Ranvier are found only on

Accepted Answer

A)  myelinated axons.
B)  dendrites.
C)  astrocytes.
D)  Nissl bodies.
E)  unmyelinated axons.

Question 13

Neurons conduct action potentials (nerve impulses), but neuroglia do not.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is NOT true of the myelin sheath?

Accepted Answer

A)  The myelin sheath increases the speed of nerve impulse conduction.
B)  The myelin sheath is an electric insulator.
C)  The myelin sheath forms a wrapped coating around both axons and dendrites.
D)  The myelin sheath is part of a living cell.
E)  All of these are true of the myelin sheath.

Question 15

Which of the following is true of interneurons?

Accepted Answer

A)  They are only found in the peripheral nervous system.
B)  They are also called efferent neurons.
C)  They often connect sensory neurons to motor neurons.
D)  They are directly connected to sensory receptors.
E)  None of the choices is true of interneurons.

Question 16

A nerve is the same structure as a neuron.

Accepted Answer

A) True 
 B)False

Question 17

What is the function of ependymal cells?

Accepted Answer

A)  They are the phagocytes of the brain.
B)  They produce cerebrospinal fluid, and circulate it around the brain and spinal cord.
C)  They produce the myelin sheath around axons of the peripheral nervous system.
D)  They support the cell bodies of neurons in peripheral ganglia.
E)  They produce the myelin sheath around axons of the central nervous system. B

Question 18

Which portion of a neuron originates action potentials (nerve impulses) , to send to other neurons, glands, or muscle cells?

Accepted Answer

A)  Nucleolus
B)  Dendrite
C)  Neurilemma
D)  Axon hillock
E)  Nissl bodies (chromatophilic substance)

Question 19

Which type of neuroglial cell has a cuboidal shape?

Accepted Answer

A)  Microglia
B)  Schwann cells
C)  Ependymal cells
D)  Oligodendrocytes
E)  Astrocytes

Question 20

Sensory neurons are

Accepted Answer

A)  always multipolar.
B)  mostly unipolar, but some are bipolar.
C)  always unipolar.
D)  mostly multipolar, but some are bipolar.
E)  always bipolar. B

Exam 27: Nervous Tissue and Nerves

Neurons that have one dendrite and one axon extending from the cell body are called ________ neurons.

Correct AnswerverifiedShow Answer

Which type of neuroglia forms the myelin sheath around some axons of the PNS (peripheral nervous system) ?

Correct AnswerverifiedShow Answer

A bundle of nerve fibers is surrounded by a layer of fibrous connective tissue called the

Correct AnswerverifiedShow Answer

A peripheral process is a structure found only in ________ neurons.

Correct AnswerverifiedShow Answer

Exchange of nutrients and other substances between CNS neurons and blood vessels is accomplished by

Correct AnswerverifiedD

All structural types of neurons contain only one axon.

Correct AnswerverifiedShow Answer

The rarest structural type of neuron is a bipolar neuron.

Correct AnswerverifiedShow Answer

What is found in the posterior root ganglion of a spinal nerve?

Correct AnswerverifiedShow Answer

Cranial and spinal nerves are part of the central nervous system (CNS).

Correct AnswerverifiedShow Answer

Which type of neuron conducts nerve impulses from the central nervous system to muscles or glands?

Correct AnswerverifiedShow Answer

Pertaining to the nervous system, what is an effector?

Correct AnswerverifiedShow Answer

Nodes of Ranvier are found only on

Correct AnswerverifiedShow Answer

Neurons conduct action potentials (nerve impulses), but neuroglia do not.

Correct AnswerverifiedShow Answer

Which of the following is NOT true of the myelin sheath?

Correct AnswerverifiedShow Answer

Which of the following is true of interneurons?

Correct AnswerverifiedShow Answer

A nerve is the same structure as a neuron.

Correct AnswerverifiedShow Answer

What is the function of ependymal cells?

Correct AnswerverifiedB

Which portion of a neuron originates action potentials (nerve impulses) , to send to other neurons, glands, or muscle cells?

Correct AnswerverifiedShow Answer

Which type of neuroglial cell has a cuboidal shape?

Correct AnswerverifiedShow Answer

Sensory neurons are

Correct AnswerverifiedB

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D

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B

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B