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Cantu A&P > Nervous System > Flashcards

Nervous System Flashcards

1
Q

What are the 4 neuralgia of the CNS (brain and spinal)

A

Astrocytes
Microglia
Oligodendrocytes
Ependymal cells

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2
Q

Astrocytes

A

Connect neurons to blood vessels
Part of blood brain barrier
Regulate ion contractions

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3
Q

Microglia

A

Phagocytic cell (consumes solids)

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4
Q

Oligodendrocytes

A

Myelin CNS axons

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5
Q

Ependymal cells

A

Regulate composition of cerebral spinal fluid (CSF)

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6
Q

Multiple sclerosis

A

Destruction of myelin sheath by immune response
Scars are left behind which stop neurons from conducting impulses without input and muscles stop contracting atrophy
Symptoms:fatigue,weak,and numb limbs

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7
Q

Sensory neurons

A

Carry impulse to CNS

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8
Q

Interneurons

A

Link neurons located in CNS

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9
Q

Motor neurons

A

Carry impulses away from CNS and towards effectors

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10
Q

General function of neuroglia

A

Provided structural support for neurons

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11
Q

Schwann cells

A

Produce myelin found on peripheral axons

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12
Q

Satellite cells

A

Supporting clusters of neuron

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13
Q

What is the nervous system

A

Detects changes , make decisions, stimulates muscles and glands (effectors), and maintain homeostasis

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14
Q

What are two cell types

A

Neurons and neuroglia

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15
Q

Neurons

A

React to changes

Send impulses for communication

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16
Q

Neuroglia

A

Support neurons

17
Q

Central nervous system(CNS)

A

Brain and spinal cord

18
Q

Peripheral nervous system (PNS)

A

Cranial nerves

Spinal nerves

19
Q

Sensory function

A

Changes are detected

Information is delivered to the brain

20
Q

Integrative function (brain)

A

Use sensory info to make decisions on body’s response

21
Q

Motor functions

A

Decisions are acted upon

Impulses are carried to effectors

22
Q

Neurons

A

Vary in size and shape
May differ in length
Share certain features

23
Q

Cell body(soma)

A

Nucleus,cytoplasm,organelles

24
Q

Dendrites

A

Branches receptive surfaces

25
Q

Axon

A

Transmits impulses and releases neurotransmitters

Only 1 axon

26
Q

Schwann cells

A

PNS neuroglia that creates a myelin sheath which covers the axon

27
Q

Nodes of Ranvier

A

Gaps in myelin sheath

Cantu A&P (11 decks)

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