Q32 of 231 Page 116

What are the various sense organs in our body?

In human body, there are 5 sense organs present. They are eyes, ears, nose, tongue and skin.


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30

State whether coughing is a voluntary action or reflex action.

 31

Fill in the following blanks with suitable words:

(a) The two examples of effectors are .................and .....................


(b) Our..................system allows us to react to our surroundings. Information from receptors passes along.................neurons to our brain. Our brain sends impulses along...........neurons to our muscles.


(c) A neuron which carries an impulse to the brain is called a .................... neuron.


(d) The neuron which carries a message for action to a muscle or gland is known as a.................... neuron.

 32

What is meant by receptors and effectors? Give two examples of each.

 33

What is spinal cord? What is its main function?