A&P 1.3 Functions of Human Life

First law of thermodynamics

energy can be neither created nor destroyed, only changes forms

anabolism

small, simple molecules are combined into large complex substances, uses energy

Catabolism

larger, complex substances are broken down into smaller simpler molecules, releases energy

Metabolism

sum of all anabolic and catabolic reactions, occurs simultaneously to keep you alive

responsiveness

ability of an organism to adjust to changes in internal and external environments

development

all the changes the body goes through in life

growth

increase in body size, increase number of existing cells, increase amount of noncellular material around cells

reproduction

formation of new organism from parent organisms