Part one of term paper
The is the organ of that you gives your sight. s enable people to perform tasks and to learn about the world that around them. Sight, or vision, is a rapidly occurring process that involves interaction between the the nervous system and the brain. When someone looks at an object, what he/she is really seeing is the light that the object ref ...

Part two of term paper
... socket of the skull. The lids guard it in front. They blink an average of once every six seconds. This washes the with the salty secretion from the tear, or lachrymal, glands. Each tear gland is about the size and shape of an almond. These glands are located behind the upper lid at the outer corner of the . After passing over the , the liquid from the gland is drained into the nose through the tear duct at the inner corner of the . Heavy laughter or crying causes muscles in the upper lid to squeez ...