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.
Mammalian excretion [change | change source]. In mammals, excretion is the formation of urine in the kidneys, and expelling carbon dioxide from the lungs. These waste products are eliminated by urination and breathing out respectively.If excretion does not occur in an organism, waste products accumulate, which eventually kill the organism.ammalian excretion [change | change source]. In mammals, excretion is the formation of urine in the kidneys, and expelling carbon dioxide from the lungs. These waste products are eliminated by urination and breathing out respectively.