The fuels of the body are carbohydrates, fats and proteins. These are taken in the diet.
Carbohydrates are the principal source of energy in most diets. [...]
All mammals are well supplied with oral glands. There are numerous small glands, such as the labial glands of the lips, buccal glands of the cheeks, [...]
Muscles are the active part of the motor apparatus; their contraction produces various movements.
The muscles may be divided from a physiological [...]
The integument consists of the skin (epidermis and dermis) and associated appendages (sweat glands, sebaceous glands, hairs, and nails). Considered the [...]
A tissue is a group of cells working together to do a special job. A histologist is one who specializes in the study of tissues. The cells, of which the [...]
The cell is a smallest independent unit in the body containing all the essential properties of life. types of human cells can be grown in test tubes [...]