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Brain and Neuropsychology

The nervous system, fight or flight and the James-Lange theory

  • 3 things to know
  • Paper 2

Overview

The central and peripheral, somatic and autonomic nervous systems, the sympathetic and parasympathetic branches, the fight or flight response and the James-Lange theory of emotion.

What you need to know

Answer each one before you reveal it.

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Key term

What bodily changes happen during the fight or flight response?

Key term

What are the two main divisions of the human nervous system?

Key term

What makes up the central nervous system, and what does it do?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What are the two main divisions of the human nervous system?

    Model answer

    The two main divisions are the central nervous system and the peripheral nervous system.

  2. 2

    What makes up the central nervous system, and what does it do?

    Model answer

    The central nervous system is the brain and the spinal cord. The CNS processes incoming information and decides how the body should respond.

  3. 3

    What does the peripheral nervous system do?

    Model answer

    The peripheral nervous system carries messages between the central nervous system and the rest of the body. The PNS divides into the somatic and autonomic nervous systems.

  4. 4

    What does the somatic nervous system do?

    Model answer

    The somatic nervous system controls voluntary movement of the skeletal muscles. The somatic system also carries information from the sense organs to the CNS.

  5. 5

    What does the autonomic nervous system do?

    Model answer

    The autonomic nervous system controls involuntary functions such as heart rate, breathing and digestion. The autonomic system works automatically, without conscious effort.

  6. 6

    What are the two branches of the autonomic nervous system?

    Model answer

    The sympathetic branch arouses the body and triggers the fight or flight response. The parasympathetic branch calms the body and returns it to a resting state.

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AHeart rate and breathing speed up and the pupils dilate.
BDigestion slows and sweating increases.
CThe muscles tense, ready for action.

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