The white area around the iris is called the sclera. The sclera makes up most of the surface of the eye and protects its liquid inner contents by providing a tough outer covering.
An alternate term for the sclera is the white of the eye. Although the sclera is white in healthy adults, it can also be other colors under certain conditions. In infants and young children, the sclera is thinner than in adults and has a bluish cast. An inflamed or irritated sclera can appear red or pink. Finally, the liver condition jaundice can make the sclera turn yellow as bile builds up in body tissue.Learn More
Squamous epithelial cells, most commonly known as cheek cells, secrete a continuous supply of mucin, the main element in mucus, according to the National High Magnetic Field Laboratory. Charged with maintaining moisture in the mouth, these cells divide every 24 hours and are constantly shed throughout the process. This moisture content is necessary in the mouth to aid enzymes in breaking down food, assist in swallowing and begin digestion.Full Answer >
The skeletal system consists of 206 bones and their associated tissues, including the cartilage, ligaments, tendons and joints. Its functions are supporting the body and protecting the vital organs. It also serves as anchorage for the action of muscles.Full Answer >
When you swallow, a piece of cartilage called the epiglottis closes off the trachea, or windpipe, to prevent food from obstructing your airway, according to About.com. The epiglottis flap normally rests in a slightly upright position above the larynx, or voice box. The epiglottis temporarily folds over the larynx opening as food or beverages enter the throat, protecting the trachea and lungs, MedlinePlus states.Full Answer >
The summary equation for aerobic respiration is C6H12O6 + 6O2 to 6CO2 + 6 H2O + 36 or 38 ATP while the summary equation for anaerobic respiration is C6H12O6 to 2CO2 + 2C2H5OH + 2 ATP. In the equations, C6H12O6 is a type of glucose, O2 is oxygen, CO2 is carbon dioxide and 2C2H5OH is lactic acid.Full Answer >