Levels of Organization/Maintenance of Life** Flashcards
(25 cards)
The branch of science that deals with the structure of body parts, their forms, and how they are organized
anatomy
concerns the functions of body parts, what they do and how they do it
physiology
microscopic particles
atoms
A particle made up of 2 or more atoms
molecules
particles formed by molecules combining in a complex way
macromolecules
basic unit of structure and function
cell
composed of aggregates of macromolecules; carry out certain activities
organelles
cells that are organized into layers or other structures that have a common function
tissues
complex structures with specialized functions; formed by groups of tissues that interact
organ
a group of organs that function closely together
organ system
a living thing, organ systems make up this
organism
all of the chemical reactions in cells that break down or build up substances
metabolism
the condition of a stable internal environment
homeostasis
the fluid surrounding body cells
internal environment
maintains homeostasis though a number of self regulating control system
homeostatic mechanisms
provide information about specific conditions in the internal environment
receptors
tells what a particular value should be
set point
cause responses that alter conditions in the internal environment
effectors
cell specialization
differentiation
fluid outside cells
extracellular fluid
fluid in cells
intracellular fluid
a hormone secreting cell
interstitial
study of the structure and function of tissues
histology
process by which changes cause additional similar changes, producing unstable condition
positive feedback
