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Anatomy: Exam 3 > Ch.12 Exam review questions > Flashcards

Ch.12 Exam review questions Flashcards

1
Q

What is a nerve?

A

A bundle of axons in the PNS

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2
Q

What is a tract?

A

a bundle of axons in the CNS

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3
Q

What is a ganglion?

A

A cluster of cells in the PNS

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4
Q

What is a nucleus?

A

A cluster of cell bodies in the CNS

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5
Q

What are motor neurons attached to

A

mucles

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6
Q

What are sensory neurons attached to?

A

the spinal cord

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7
Q

What are the two divisions of the PNS?

A

motor and sensory

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8
Q

What is the function of a cell body?

A

It integrates information from the dendrites and other synaptic inputs in determining the messages to be transmitted to other cells through its axon.

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9
Q

What is the function is a dendrite?

A

Receive on input portions of a neuron

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10
Q

What is the function of an axon?

A

Propagates nerve impulses toward another neuron, a muscle fiber, or a gland cell.

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11
Q

Which neuroglia are in the CNS?

A

astrocytes, oligodendrocytes, microglia, and ependymal cells

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12
Q

Which neuroglia are in the PNS?

A

Schwann cells and satellite cells

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13
Q

What is the function of astrocytes?

A

help to maintain the appropriate chemical environment for the generation of nerve impulses

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14
Q

What is the function of oligodendrocytes?

A

Are responsible for forming and maintaining the myelin sheath around CNS axons.

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15
Q

What is the function of Microglial?

A

Functions as phagocytes

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16
Q

What is ependymal cells?

A

Produce cerebrospinal fluid, which protects and nourishes the brain and spinal cord

17
Q

What is the function of Schwann cells?

A

Participates in axon regeneration and form the myelin sheath around axons

18
Q

What is the function of satellite cells?

A

Provides structural support, and regulates the exchanges of materials between neuronal cell bodies and interstitial fluid

19
Q

What type of ion channels are located in the axons?

A

leak channels and voltage-gates channel

Anatomy: Exam 3 (10 decks)

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