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Anatomy
study of body structure
Physiology
study of body function
atom
basic unit of matter
molecule
group of atoms bonded together
macromolecule
molecule containing a very large number of atoms
protein, nucleic acid, lipid, carbohydrate
cells
smallest unit of life
plasma membrane
selectively-permeable phospholipid bilayer forming the boundary of the cells
organisms
independent living things
cell differentiation
cell specialization of structure and function
, Levels of organization
chemical, cellular, tissue, organ, body system, organism
tissue
group of similar cells that perform a particular function
muscle
tissue composed of fibers that can contract
skeletal, smooth, cardiac
skeletal muscle
muscle attached to the bones of the skeleton & provides the force that moves the
bones-voluntary muscle
smooth muscle
controls movement of content through hollow tubes and organs-involuntary
cardiac muscle
involuntary muscle tissue found only in the heart
nervous
initiates and transmits electrical impulses throughout the body
epithelial
responsible for exchange of materials between cell and environment
epithelial & secretory glands
epithelial sheets
layers of tightly joined cells that cover and line various parts of the body
connective tissue
connects, supports, & anchors body parts