placenta. n, pl-tas or-tae (-tiË). 1. (Anatomy) the vascular organ formed in the uterus during pregnancy, consisting of both maternal and embryonic tissues and providing oxygen and nutrients for the fetus and transfer of waste products from the fetal to the maternal blood circulation.
Definition. To be brief, optimal health is an individual person's physical, emotional and mental health abilities. That is, it is the health goals that a person can realistically achieve to feel their personal best. No two people's health goals are the same, that's why optimal health is such an individualized matter. One person might focus on physical health while to another healing emotional wounds is a more pressing matter. It really just depends on what is important to you.
Health is the level of functional and metabolic efficiency of a living organism. The World Health Organization defined human health in its broader sense in its 1948 constitution as a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity. This definition has been subject to controversy, in particular as lacking operational value, the ambiguity in developing cohesive health strategies, and because of the problem created by use of the word c