bio exam 1 Flashcards
anatomy
the study of the structure (morphology) of the body and its parts (form and organization)
physiology
study of the functions of these parts and how they work and interact
atoms
smallest unit of a chemical
molecules
consist of two or more atoms
macromolecules
larger particles composed of small molecules bound together
cells
are the basic units of structure and function in all living things.
tissues
group of cells that functions together
organs
group of tissues that perform specialized functions
organ systems
group of organs that function together
organisms
composed of organ systems functioning together
growth
increase in body size and size of number of cells
reproduction
production of new organisms or cells
responsiveness
reaction to internal or external change
movement
change in position of the body or a body part motion of an internal organ
metabolism
the sum of all chemical reactions going on in the cells of an organism as it ingest food breaks down and synthesizes chemicals and removes waste
respiration
releas of energy from foos by using oxygen and giving off carbon dioxide
digestion
breakdown of foos into usable forma which are absorbed into the blood
circulation
movement of cells and chemicals in body fluids
excretion
removal of metabolic waste from the body
requirements to maintain life
water, oxygen, carbon dioxide , heat, pressure
external environment
outside world
internal environment
fluid around the body cells