Edisi Nota : Topic 1

Topic 1 The World Through Our Senses

 

Our senses detect stimuli and we respond.Human have receptors or sense organs such as:

Skin

• responds to touch, pressure, pain,heat and cold.

Tongue 

• responds to chemical in our food and drink . It gives us our sense of taste

Nose

• responds to chemical in the air . It gives us our sense of smell.

Ears

• respond to sound vibrations and movements. They give us our sense of hearing and our balance.

Eyes

• respond to light rays. They give us our sense of sight. 

Nervous pathway from stimulus to response:

Stimulus → Sensory organs → Sensory nerves → Brain → Motor nerves → Response