aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… … Universalium
Aging of wine — Bottles of wine in an underground cellar aging The aging of wine, and its ability to potentially improve wine quality, distinguishes wine from most other consumable goods. While wine is perishable and capable of deteriorating, complex chemical… … Wikipedia
Pigment — A substance that gives color to tissue. Pigments are responsible for the color of skin, eyes, and hair. * * * 1. Any coloring matter, as that of the red blood cells, hair, iris, etc., or the stains used in histologic or bacteriologic work, or… … Medical dictionary
human aging — ▪ physiology and sociology Introduction physiological changes that take place in the human body leading to senescence, the decline of biological functions and of the ability to adapt to metabolic stress. In humans the physiological… … Universalium
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
human disease — Introduction an impairment of the normal state of a human being that interrupts or modifies its vital functions. health versus disease Before human disease can be discussed, the meanings of the terms health, physical fitness, illness … Universalium
skin — skinlike, adj. /skin/, n., v., skinned, skinning, adj. n. 1. the external covering or integument of an animal body, esp. when soft and flexible. 2. such an integument stripped from the body of an animal, esp. a small animal; pelt: a beaver skin.… … Universalium
Human skin — Skin epidermis (A), dermis (B), and subcutis (C), showing a hair follicle (1), sweat gland (11) sebaceous gland (7) Latin cutis … Wikipedia
atrophy — atrophic /euh trof ik, euh troh fik/, adj. /a treuh fee/, n., v., atrophied, atrophying. n. 1. Also, atrophia /euh troh fee euh/. Pathol. a wasting away of the body or of an organ or part, as from defective nutrition or nerve damage. 2.… … Universalium
Lipofuscin — Micrograph showing lipofuscin in a liver biopsy with ground glass hepatocytes. H E stain. Lipofuscin is the name given to finely granular yellow brown pigment granules[1] … Wikipedia
digestive system disease — Introduction any of the diseases that affect the human digestive tract. Such disorders may affect the esophagus, stomach, small intestine, large intestine (colon), pancreas, liver, or biliary tract. A prevalent disorder of the digestive… … Universalium