Category: E

An instrument for measuring the degree of protrusion of the eyeball. The distance measured is that from the rim of bone at the outer edge of the eye, forward to the surface of the front of the cornea. Also known as a proptometer. An instrument used to measure the extent of protrusion of the eyeball…

An enzyme (e.g. trypsin) that takes part in the digestion of proteins by splitting off the terminal amino acids of a polypeptide chain. Compare endopeptidase.  

Describing those stages in the life cycle of the malarial parasite that develop in the cells of the liver. Each parasite (sporozoite) divides repeatedly to produce a schizont containing many merozoites. Occurring outside the red blood cells. Most of the life cycle of the malaria parasite in a human host is inside the red blood…

An enzyme that acts outside the cell that produced it. Examples of exoenzymes are the digestive enzymes.  

The formation and release of mature flagellated male sex cells by the microgametocytes of the malarial parasite. The process, which is completed in 10-15 minutes, occurs after the microgametocytes have been transferred from man to the stomach of a mosquito. The formation of microgametes (flagellated bodies) from the microgametocytes. This process occurs in the malarial…

A way of recording behavior in which the presence of a particular kind of behavior is noted whenever it occurs. It is used for precise descriptions of behavior and for following the course of ‘behavior modification.  

The condition of cells, tissues, or organisms in which there is one complete set of chromosomes or a whole multiple of this set in each cell. In genetics, the state of having complete sets of chromosomes.  

The state of normal or good digestion freedom from digestive symptoms. Normal digestion as distinguished from dyspepsia.  

A synthetic female sex hormone administered by mouth to treat symptoms of the menopause and menstrual disorders, to suppress lactation in mothers not breast-feeding, and to treat cancer of the prostate gland. It is also used, in combination with a progestogen, in oral contraceptives.  

A synthetic female sex hormone that is used to treat menstrual disorders and in oral contraceptives. It is administered by mouth, usually in combination with an estrogen. Side-effects can include nausea, vomiting, headache, breast swelling, weight gain, fluid retention, and breakthrough bleeding.