Nervous System Flashcards

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1
Q

Purpose of the nervous system

A

Transmits signals between the brain and the rest of the body, including internal organs

(I don’t think we need to know but)
Plays a role is every aspect of our health and well being ie. waking up, breathing, thinking, reading, remembering, and feeling emotions

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2
Q

Types/parts of the system

A

Central nervous system CNS
Peripheral nervous system PNS

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3
Q

Parts of the CNS

A

Spinal cord
Brain

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4
Q

Spinal cord

A

A pathway for nerve impulses to and from the brain, but also a center for operating and coordinating reflex actions independent of the brain

Connects the brain to the PNS starts from the medulla oblong at a and stretches to the lumbar region of the spine it vertebral column

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5
Q

Brain

A

Most complex and important organ in the body
Found in head protected by skull

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6
Q

Three main parts of the brain

A

Cerebellum
Encephalic trunk
Brain cortex

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7
Q

Cerebellum

A

Controls movement balance and coordination

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8
Q

Encephalic trunk

A

Controls the bodies ability to breath air
Digest food
Circulate blood through body

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9
Q

Brain cortex

A

Largest and most recognizable
Neurons are housed

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10
Q

Left hemisphere of the brain

A

Controls right side of the body
Responsible for:
Speech, calculating, and reasoning

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11
Q

Right hemisphere of the brain

A

Controls the left side of the body
Responsible for:
Intuition, creativity

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12
Q

3 lobes

A

Frontal lobe
Parietal lobe
Temporal lobe

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13
Q

Frontal lobe

A

Plan our actions
Feel emotions

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14
Q

Parietal lobe

A

5 senses

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15
Q

Temporal lobe

A

Memory

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16
Q

Parts of PNS

A

Motor nerves
Sensory nerves

17
Q

Motor nerves

A

Carry messages in form if a response from the brain on spinal cord (located CNS)

18
Q

2 types of motor nerves

A

Lower motor nerves
— travel Spinal chord to muscle
— damage to lower motor neuron cell bodies or their peripheral = paralysis or paresis
Upper motor nerves
— travel brain and spinal cord

19
Q

4 different sensory nerves

A

Mechanoreceptors
Thermoreceptors
Nociceptors
Chemoreceptors

20
Q

Responsible for carrying signals the brain to help you touch taste smell and see

A

Sensory nerves

21
Q

Illness

A

Alzheimer’s
Bells palsy

22
Q

Alzheimer’s

A

Build up if certain chemicals and proteins in the brain
Leads to dementia symptoms over time
No cure but some medications and learning new behaviour help symptoms

23
Q

Bell’s palsy

A

Sudden weakness or paralysis on one side of the face
Caused my inflammation or damage to facial nerve
Can cause drooping eyelid, difficulty closing one eye, drooling, difficulty eating/drinking
No cure: can go back to normal 2 weeks to 6 months, can go to physical therapy to help