Nervous System

1) What components make up the nervous corpse?
The nervous constitution is made up of nerves, the spinal cord and the brain.
2) Why do we need the nervous system?
We need the nervous system because it manages, coordinates and integrates the functions of all other organs and systems.
3) What do sense organs do?
It perceives the changes in the internal and the external environment of the being.
4) Where might you find these receptors:
a) sporty receptor? - In your eyes.
b) Sound receptors? - In your ears.
c) Balance receptors? - In your ears.
d) Pain receptors? - All over your skin.

5) What is a stimulus?
A stimulus is that which influences or causes a temporary increase of physiologic activity or reaction in the whole organism or in whatsoever of its parts.
6) What is an effector?
An effector is any part of the body that produces the chemical reaction. It can be:
- a muscle-builder contracting to move the arm
- a muscle squeezing spitting from the salivary gland
- a gland releasing a internal secretion into the blood
7) What is the name of an individual nerve cell and what is its job?
A nerve cell is called neuron. It coordinates the actions of an animal and transmits nervous channelizes between distinguishable parts of its body.
8) What is the pathway of a natural nervous signal?





Start with..... Stimuli detected by receptor then the receptor pass the signals for change to the next cells. The signal goes down to your sensory(a) nerve. Then it is passed to your Relay nerve which passes it to the Mortal nerve. Last still not least the Mortal nerve passes it to the effector which produces the respond.

9) What is a reflex action, why is it different to a normal reaction?
A reflex action, also known as a reflex, is an unwilling and nearly instantaneous movement in response to a stimulus. Its different to a normal response because u do the reflection reaction completely involuntary and instantaneous to protect ourselves from danger while we do the normal response...If you want to get a full essay, order it on our website: Ordercustompaper.com



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