The Nervous System Flashcards

(27 cards)

1
Q

What is the nervous system

A

Aliased network of cells in the human body and is our primary internal communication system

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2
Q

What is the nervous system based on

A

Chemical and electrical signals

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3
Q

What are the 2 main functions of the nervous systems

A

.collect, process and respond to information in the environment
.co-ordinate the working of different organs and cells in the body

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4
Q

What are the 2 subsystems of the nervous system

A

.central nervous system
.peripheral nervous system

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5
Q

What are the two parts of the CNS

A

Brian and Spinal cord

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6
Q

What are the 2 subdivisions of the PNS

A

.Autonomic nervous system
.Somatic nervous system

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7
Q

What are the 2 subdivisions of the autonomic nervous system

A

.Sympathetic nervous system
.Parasympathetic nervous system

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8
Q

How does the brain receive information and where is it sent to

A

from sensory receptors and sends messages to
muscles and glands

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9
Q

What type of awareness is the brain involved in

A

conscious awareness and involved in all psychological processes

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10
Q

How many hemispheres does our brain have

A

2

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11
Q

How many brain regions do we have

A

4

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12
Q

What is the role of the brain stem

A

Controls involuntary and automatic processes such as breathing blinking

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13
Q

What is the role of the cerebral cortex

A

It’s the brains outer layer that distinguishes our higher mental functions from those animals

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14
Q

What is the role of the signal cord

A

Transfers messages to and from the brain and around the body and is responsible for simple reflexes

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15
Q

What are the 4 brain regions

A

Occipital, temporal, parietal and frontal

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16
Q

What is the role of the PNS

A

To relay nerve impulses/messages from the CNS
around the body and back to the CNS

17
Q

What are the two divisions of the PNS

A

Somatic NS and Autonomic NS

18
Q

What is the role of the somatic NS

A

it relays sensory neurons to the CNS and motor neurons away from the CNS and is responsible for basic reflexes

19
Q

What is the function of autonomic NS

A

Controls involuntarily actions that work efficiently when they aren’t thought about

20
Q

What are the two divisions of the autonomic NS used to deal with

A

Fight or flight situations

21
Q

What is meant by fight or flight

A

Our response to deal with threatening situations

22
Q

Which of the two Autonomic NS divisions is primarily involved with fight or flight responses

23
Q

What does the sympathetic NS do during threatening situations

A

Releases neurons/impulses from the SNS to every organ and glad in the body which leads to increased BPM, blood pressure and breathing rates.

24
Q

What happens to digestion, salivation and urination in the sympathetic NS during a threatening situation

A

They slow down

25
What is the role of the parasympathetic NS
It works alongside the SNS to relax the body once the threatening situation has passed
26
What is it called when the parasympathetic NS causes the body to slow down
Rest and digest
27
What does the parasympathetic NS do to BPM and blood pressure and breathing
Slows them down