8 terms

Ch. 1 Cells & Body Systems

cells, organs & body systems
The basic unit of structure and function of living things
cell membrane
The thin covering that surrounds every cell
circulatory system
organ system made of heart, blood vessels
jellylike material inside a cell between the cell membrane and nucleus
`digestive system
organ system that turns food into nutrients that body cells need for energy, growth and repair
excretory system
organ system including the kidneys and bladder that removes waste materials from the blood
too small to be seen without using a microscope
muscular system
organ system that includes the muscles and allows the body to move