Outcome Three: The Nervous System (Cells And Systems) Flashcards

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1
Q

What are neurons?

A

Specialized cells of the nervous system that receive and transmit neurons.

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2
Q

What are neurons made up of?

A

Dendrites and axons?

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3
Q

What are dendrites?

A

Small branches of a neuron that receives information from neighbouring cells.

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4
Q

What are axons?

A

Long extensions of a neurons cell body that transmits information to neighbouring cells.

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5
Q

What is the myelin sheath?

A

An insulating layer, or sheath that forms around nerves.

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6
Q

What is the central nervous system made up of?

A

Brain and spinal cord.

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7
Q

How many sections is the brain divided into?

A

Three.

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8
Q

What does the cerebrum control?

A

Moving, thinking, and interpreting the five senses.

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9
Q

What does the cerebellum control?

A

Motor movement coordination, balance, equilibrium and muscle tone.

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10
Q

What does the medulla control?

A

Breathing, digestion, and heart function.

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11
Q

What two types of neurons make up the peripheral nervous system?

A

Sensory and motor nerves.

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12
Q

What do sensory neurons do?

A

Carry information from the body to the central nervous system.

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13
Q

What do motor neurons do?

A

Carry information from the central nervous system to the muscles or other organs,

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14
Q

What does the somatic nervous system do?

A

Respond voluntarily to stimuli such as turning your head when you hear a loud noise.

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15
Q

What does the autonomic nervous system do?

A

Responds to stimuli without you thinking about it, such as breathing and blinking.

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16
Q

What is a reflex?

A

An automatic response to a stimulus, happens very quickly and without conscious controls.