An Introducion to The Nervous System
- Created by: Sophia Dowden
- Created on: 30-05-16 15:38
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- The Nervous System
- The nervous system is dependent upon a continuous input of information from inside and outside the body.
- This input is detected by sensory organs/ recetors
- Sense organs
- Nose
- Chemical receptors
- Skin
- Pain receptors, pressure and temperature
- Tounge
- Chemical receptors
- Ears
- Sound and balance receptors
- Eyes
- Light receptors
- Nose
- Stimuli involves the detection of informatio and is passed on to an effector.
- e.g. muscles or glands via the nervous system
- Can be classified into the central nervous system (CNS) this consists of the brain and spinal cord
- The peripheral nervous system (PNS) consists of nerves and the ganglia.
- Many body functions and actions are controlled by reflex actions which involves the CNS.
- Sensory receptors detect one form of energy e.g. light energy detected by light receptors in the eyes.
- and convert it into electrical enrgy.
- The act as transducers (convert one energy into another)
- and convert it into electrical enrgy.
- The electrical impulses travel along nerves and travel along nerve impulses.
- The nervous system is dependent upon a continuous input of information from inside and outside the body.
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