The nervous system Flashcards

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1
Q

Two components of the CNS

A

Spinal chord

Brain

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2
Q

Four main areas of the brain

A

Cerebrum
Cerebellum
Diencephalon
Brain Stem

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3
Q

Function of the cerebrum

A
  • Largest part

- Divided into: frontal lobe (speech), occipital lobe (visual)

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4
Q

Function of the cerebellum

A
  • Controls motor and balance skills

- Abnormalities can result in problems such as epilepsy

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5
Q

Function of the diencephalon

A
Divided into Thalamus (relay station for impulses)
and hypothalamus (regulates temp, hunger)
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6
Q

Function of the brain stem

A
  • Regulates automatic functions: breathing, heart beat
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7
Q

The peripheral nervous system’s two parts:

A

Somatic and Autonomic

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8
Q

Function of somatic

A

Made up of twelve pairs of cranial nerves and 31 pairs of spinal nerves.
These nerves have sensory and motor neurons

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9
Q

Function of autonomic

A

Regulates involuntary actions

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10
Q

Autonomic two parts

A

Sympathetic and parasympathetic

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11
Q

Function of the sympathetic

A

Fight or flight. Neurons travel from the SNS to organs and glands. SNS causes the body to release stored energy.

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12
Q

Effects on the SNS: Sympathetic

A
  • Increased pupil size
  • Increased heart rate
  • Increased breathing rate
  • Bronchi dilate
  • Glycogen converted to glucose
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13
Q

Function of the parasympathetic

A

Relaxes an individual after emergency. Rest and Digest

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