The Sense Organs: The Organs Touch, Smell and Taste

OBJECTIVES: At the end of the lesson students should be able to:

1. list five sense organs highlighting their respective locations.
2. describe the organ of smell and taste.
3. identify the different parts of the tongue associated with sweetness, bitterness, salty taste and sour taste.
4. draw the skin showing the different receptors present.
5. state two ways to care for the skin.

SENSE ORGANS

A sense organ is a group of specialized cells or tissues and receptors which are able to receive or collect perceive and detect stimulus and transmit the information; and message to the central nervous system. The human body has five sense organs they are all found in a person, each function in perceiving various sensation they includes;

• Eye for vision
• Ear for hearing and balance
• Nose for smelling
• Tongue for tasting
• Skin to receive sensation of temperature, pain touch and pressure (feelings)

In each sense organ, sensory nerve endings are close to the body surface they receive and relay those to the brain or spinal cord

THE SKIN AS A SENSE ORGAN

The skin is the toughest in the body apart from the bones.