Chapter 21: Organization of the Body

Body/Organ Systems, Major tissue types, Anatomical Terms

Anatomy

study of body structure

Physiology

Study of the function of the body’s organs and systems

Matter

anything that takes up space & has weight

Atom

smallest unit of matter

Molecules

made of atoms that bond

Organlles

like “organs” of cells, made of molecules

Cells

smallest living unit of body

Tissue

2 or more of the same type of cell

Organ

two or more tissue types combine

Organ systems

made of organs

Organism

all organ systems combined

Epithelial Tissue

a type of tissue that covers surfaces of the body, lines cavities, and forms glands

Connective Tissue

most abundant tissue in body, cells are separated by a matrix that provides support and connects other tissues.