The Peripheral Nervous system Flashcards Preview

Pyschology Paper 2: Psychology in Context > The Peripheral Nervous system > Flashcards

Flashcards in The Peripheral Nervous system Deck (18)
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1
Q

What does PNS stand for?

A

Peripheral Nervous System

2
Q

What makes up the PNS?

A

All nerves OUTSIDE the nervous system

3
Q

What is the function of this part of the nervous system?

A

To relay nerve impulses from the CNS to the rest of the body back to the CNS

4
Q

What are the two main divisons of the PNS>

A

Somatic nervous system

Autonomic nervous system (ANS)

5
Q

What is the somatic nervous system made up of?

A

12 pairs of cranial nerves and 31 pairs of spinal nerves

6
Q

What are cranial nerves?

A

Nerves that emerge directly from the underside of the brain

7
Q

What are spinal nerves?

A

Nerves that emerge from the spinal cord

8
Q

What is the somatic nervou system involved with?

A

Reflex actions without the involvement of the CNS making the movements even faster

9
Q

What does the autonomic nervous system regulate?

A

Involuntary actions such as heart beats, digesting foods

10
Q

What does the ANS stand for?

A

Autonomic nervous system

11
Q

What are the names of the two parts the ANS is split into?

A
  • Sympathetic

- Parasympathetic

12
Q

What does the SNS stand for?

A

Sympathetic nervous system

13
Q

What is the SNS primarily involved with?

Examples?

A

Responses that help us deal with emergencies ( fight or flight)
Increasing heart rate, increasing blood pressure

14
Q

Where do neurons from the SNS travel to?

A

virtually every organ and gland within the body, preparing the body for the rapid action necessary when the individual is under threat

15
Q

Some examples of what the SNS cause the body to do?

A

Causes the body to release stored energy

  • Pupil dilate
  • hair stands on end
  • Slows down digestion
    > less important
16
Q

What does the parasympathetic nervous system do?

A

relaxes after the emergency has passed

17
Q

Examples of what the parasympathetic nervous does?

A

Slows the heart beat down

Reduces blood pressure

18
Q

What is another benefit of the parasympathetic nervous system?

A

Digestion starts up again