nervous (INTRO) Flashcards

1
Q

A group of tissues composed of highly specialized cells possessing the characteristics of excitability and conductivity

A

NERVOUS SYSTEM

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2
Q

Morphological Divisions:

A
  • Central nervous system
  • Peripheral nervous system
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3
Q

➢ Brain
➢ Spinal cord

A

Central nervous system

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4
Q

➢ Cranial nerves (12 pairs)
➢ Spinal nerves (31 pairs)
➢ Autonomic nervous system

A

Peripheral nervous system

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5
Q

Functional Divisions of peripheral nervous system:

A

❖ Somatic efferent
❖ Visceral efferent

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6
Q

➢ Innervating _________ structures like skeletal muscles and skin.
➢ Pertaining to the body

A

Somatic efferent

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7
Q

➢ Innervating ____________ or involuntary structures like smooth muscles, cardiac muscles and glands.
➢ This is autonomic nervous system

A

Visceral efferent

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8
Q

Types Of Cell In The Nervous System:

A

❖ Neurons
❖ Neuroglia

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9
Q

➢ The active conducting elements
➢ This is the Parenchymal – functional cells

A

Neurons

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10
Q

➢ the supporting elements

A

Neuroglia

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11
Q

Neuroglia CONTAINS:

A

▪ Astrocyte
▪ Oligodendrocyte
▪ Microglia
▪ Ependymal cells

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12
Q

involve in the blood brain barrier.

A

Astrocyte

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13
Q

Produce myelin sheath in the central nervous system.

A

Oligodendrocyte

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14
Q

Phagocytic cells (protecting)

A

Microglia

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15
Q

o lining the ventricles at the brain and central canal of spinal cord.
o Flow of Cerebrospinal fluid, fluid of your brain

A

Ependymal cells

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16
Q

Basic unit of the nervous system which conducts electrical impulses from one part of the body to another.

A

Neuron

17
Q

Two types of processes in neuron:

A

❖ Dendrites
❖ Axons

18
Q

➢ Transmit impulses toward the cell body.
➢ Afferent process

A

Dendrites

19
Q

➢ Conducting impulses away from the cell body.
➢ Efferent process

A

Axons

20
Q

that will allow the conduction of impulse to pass through from one neuron to another.

A

neurotransmitters

21
Q

➢ Insulating material covering axons in central and peripheral nervous system.
➢ The electrical impulse jumps from node to node in myelin sheath instead of traveling continuously along the nerve fiber. (Saltatory
Conduction of Impulses)

A

Myelin Sheath

22
Q

point of connection between neurons.

A

Synapse

23
Q

Main neurotransmitters:

A

➢ Epinephrine (Adrenalin)
➢ Norepinephrine (Nor Adrenaline)
➢ Acetylcholine

24
Q

Nerve Impulse:

A

❖ Nerve Impulse
o Node of Ranvier

25
Q

periodic gap in the insulating myelin sheath on the axon of certain neurons that serves to facilitate the rapid conduction of nerve impulses

A

Node of Ranvier

26
Q

NEVER BACK DOWN NEVER WHAT!!!!!???????????

A

NEVER GIVE UP!!!!!!!!!!!!!!!!!!!!!!!!11