Study Guide: Nervous System Cells

Question 1 of 26

1

❌: consists of the brain and spinal cord
❌: composed of nerves arising from the brain and spinal cord
❌: PNS subdivision that transmits incoming information from the sensory organs to the CNS
❌: produces the "fight or flight" response
❌: subdivision that carries information from the CNS to skeletal muscle
❌: subdivision of efferent division that transmits information to smooth muscle, cardiac muscle and glands
❌: consists of all outgoing motor pathways
❌: coordinates the body's normal resting activities

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central nervous system

peripheral nervous system

afferent division

sympathetic division

somatic nervous system

autonomic nervous system

efferent nervous system

parasympathetic division

Explanation

Question 2 of 26

1

astrocyte: ❌, ❌, ❌
microglia: ❌
oligodendrocyte: ❌, ❌
Schwann cell: ❌, ❌

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helps form the blood-brain barrier

largest/most numerous neuroglial cells

"star cell"

ability of phagocytosis

produces myelin sheath in the CNS

associated with MS

produces myelin sheath in the PNS

neuroglia that forms the neurilemma

Explanation

Question 3 of 26

1

Which of the following is/are classified as nerve fibers?

Select one or more of the following:

axon
dendrites
none of the above

Explanation

Question 4 of 26

1

Which of the following conduct impulses toward the cell body?

Select one of the following:

axons
dendrites
Nissl bodies
none of the above

Explanation

Question 5 of 26

1

A neuron with one axon and several dendrites is a

Select one of the following:

multipolar neuron
unipolar neuron
bipolar neuron
none of the above

Explanation

Question 6 of 26

1

Which type of neuron lies entirely within the CNS?

Select one of the following:

afferent
efferent
inerneuron
none of the above

Explanation

Question 7 of 26

1

Which sequence best represents the course of an impulse over a reflex arc?

Select one of the following:

receptor, synapse, sensory neuron, motor neuron, effector
effector, sensory neuron, synapse,motor neuron, receptor
receptor, motor neuron, synapse, sensory neuron, effector,
receptor, sensory neuron, interneuron, motor neuron, effector

Explanation

Question 8 of 26

1

A complete nerve, consisting of numerous fascicles and their blood supply, is held together by a fibrous coat called the

Select one of the following:

endoneurium
perineurium
epineurium
fascicles

Explanation

Question 9 of 26

1

Small, distinct regions of gray matter within the CNS are usually called

Select one of the following:

white matter
nuclei
ganglia
fascicles

Explanation

Question 10 of 26

1

Nerves that contain mostly efferent fibers are called

Select one of the following:

sensory nerves
motor nerves
mixed nerves
Schwann nerves

Explanation

Question 11 of 26

1

Gray matter in the CNS consists of

Select one of the following:

nerve fibers
neuroglia
axons
cell bodies

Explanation

Question 12 of 26

1

Most nerves in the human nervous system are

Select one of the following:

sensory nerves
motor nerves
mixed nerves
reflex nerves

Explanation

Question 13 of 26

1

Evidence now indicates that neurons may be replaced

Select one of the following:

True
False

Explanation

Question 14 of 26

1

Regeneration of nerve fibers will occur if the cell body is intact and the fibers have a neurilemma.

Select one of the following:

True
False

Explanation

Question 15 of 26

1

There are no differences between the CNS and PNS concerning the repair of damaged fibers.

Select one of the following:

True
False

Explanation

Question 16 of 26

1

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The somatic motor division carries information to the ( skeletal, smooth ) muscles.

Explanation

Question 17 of 26

1

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Incoming sensory pathways are ( afferent, efferent ).

Explanation

Question 18 of 26

1

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The ( parasympathetic, sympathetic ) division coordinates the body's normal resting activities and is sometimes referred to as the "rest and repair" division.

Explanation

Question 19 of 26

1

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The myelin sheath is produced by ( oligodendrocytes, ependymal ) in the CNS.

Explanation

Question 20 of 26

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The ( Schwann cells, microglia ) are found only in peripheral neurons.

Explanation

Question 21 of 26

1

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Myelin sheath gaps are often called ( nodes of Ranvier, neurilemma ).

Explanation

Question 22 of 26

1

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Energy for the neuron is provided by ( mitochondria, Golgi apparatus ).

Explanation

Question 23 of 26

1

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Myelinated fibers are ( white, gray ).

Explanation

Question 24 of 26

1

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( Interneurons, efferent neurons ) lie entirely within the central nervous system.

Explanation

Question 25 of 26

1

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All electrical signals that start in receptors ( do not, do ) invariable travel over a complete reflex arc and terminate in effectors.

Explanation

Question 26 of 26

1

Neurons: ❌ ❌, ❌, ❌, ❌r
Neuroglia: ❌, ❌, ❌, ❌, ❌

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axon,

sensory

conduct impulses

efferent

multipola

supporting cells

astrocytes

forms myelin sheath

phagocytosis

multiple sclerosis

	Created by Alexandra Bozan over 7 years ago