Save. While an ophthalmologist and an optometrist both work in the eye health care field, there are distinct differences between the two professions. An ophthalmologist who specializes in a variety of eye disorders and conditions, while an optometrist generally checks eyes for the prescription of corrective lenses.
n something that bulges out or is protuberant or projects from its surroundings. âthe bony excrescence between its hornsâ. either prominence of the frontal bone above each orbit. prominence on the outer surface of the occipital bone. a part that bulges deeply.
Carbon dioxide and some water are excreted by lungs. Other waste materials are removed in the urine.The organs and tissues participating in the excretion of waste products constitute the excretory system. A major function of the excretory system is the excretion of nitrogenous waste.These include ammonia, urea and uric acid .Excretion also helps to maintain a constant body temperature by removing excess heat and maintain a constant internal environment in association with the other system of the body.arbon dioxide and some water are excreted by lungs. Other waste materials are removed in the urine.The organs and tissues participating in the excretion of waste products constitute the excretory system. A major function of the excretory system is the excretion of nitrogenous waste.