The human eye is responsible for the sense of sight. The process of seeing requires the eyes to perceive external properties, such as color and movement, and then share the information with the brain. People may have eyes that differ in color,...
The human eyes are organs that detect light and convert electro-chemical impulses in the neurons. The eyelid is a thin fold of skin that covers as well as protects the eye. Growing from the eyelid is a row of eyelashes which also serve to protect...
Hand-eye coordination is a basic human function; it is the ability to coordinate information received from the eyes with the motions of the hands to accomplish a task. It is a rapid development from birth through the first year, continues to speed...
The human body contains stem cells, a specific type of cell that possesses distinctive characteristics. Stem cells can divide and renew for long periods of time. They are unspecialized cells that can differentiate into a specialized type of cell,...
Fruits and vegetables are the richest sources of carotenoids, such as lutein, in the diet. Because lutein is often with zeaxanthin, another carotenoid, the two typically list as a combined number, with regard to their content in foods. According...
