20. A child will usually lose his or her first tooth by age seven.

Hyperkalemia. Important dietary sources of potassium include tomatoes, potatoes, bananas, oranges and meat.

Radius And Ulna. In human anatomy, the name for the area between the elbow and wrist if the forearm.

Sodium. The Weight Watcher's Points diet helps dieters eat the foods they like while remaining within a certain number of calories.

Throat. The uvula, a piece of tissue dangling in the throat, can be involved in snoring and is used for the guttural sound in some languages.

Herbalist. Herbalists are expected to be experts in the different uses of plants for therapy.