The Nervous System The nervous system is the most complex of all the body systems. It is also the most important system as it controls all the other body systems and the sense organs. The nervous sys
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Spinal cord: The spinal cord originates from the medulla and extends almost till the lower end of our backbone. It is surrounded and protected by the vertebral column. The spinal cord itself i
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Sense Organs We have five sense organs: eyes, ears, nose, tongue and skin. They are associated with sight, hearing, smell, taste and touch respectively. Our sense organs have special sensory re
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Ears: The ears help us to hear sounds. They help us to maintain balance. They are situated in the head region. The ear is made of three parts— the outer ear though which sound enters; the middl
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Nose: The nose helps us to smell and breathe. There are millions of nerve endings on the upper part of the nose. When the smell reaches these hair like nerves, they send message to the brain thr
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Skin: The tongue helps us to identify different tastes. It also helps us to speak. The surface of the tongue is covered with taste buds. The nerve ending in the taste buds help us to iden
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