THE NERVOUS SYSTEM

These cards contain information about all the different parts of the nervous system

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  • Created by: Aliss
  • Created on: 31-03-11 19:50

Central Nervous System

Includes all the nerves in the brain and spinal cord, controls actions and reactions triggered by our senses, and also controls the simple functions our body does e.g. sleeping, walking, eating. And more complex functions such as thinking, memory and attention.

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Brain

Controls higher mental functions and basic life processes.

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Spinal Cord

Controls reflex actions and automatic behaviours.

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Peripheral Nervous System

Consists of all the nerves leading to/from the brain and spinal cord to other parts of the body. Divides into the Somatic and Autonomic nervous systems.

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Somatic Nervous System

The nerves in this system transmit information about external stimuli, from the skin, muscles or joints to the CNS. This is how we feel pain, temperature, pressure etc. They also carry impulses from the CNS back to the original body part. The nerves also control voluntary and involuntary movements.

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Autonomic Nervous System

The nerves of this system run to and from the internal organs checking processes sush as:

  • respiration
  • heart rate
  • digestion

It is partiularly involved in emotions such as fear and stress. (Subdivides into Parasympathetic and Sympathetic).

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Parasympathetic Division

Control body activity in low levels of arousal, and initial stages of sexual activity.

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Sympathetic Division

Controls raises arousal, mobilises body in times of activity e.g. fight or flight.

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Comments

Tiffany

thank you this helps

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