CHAPTER 1 CHEMISTRY
LEVELS OF ORGANIZATION
1. Chemical : Includes all chemical substances necessary for life. Together form the next higher level.
2. Cellular : Cells are the basic structural and functional units of the equine body & there are many different types of cells.
3. Tissues : A group of different cells that perform a specific function
4. Organs : An organ consists of 2 or more tissues that perform a particular function
5. Systems : An association of organs that have a common function
CHEMICAL ORGANIZATION
1) Atom: The smallest unit of matter that comprises a chemical element.
Structure of an Atom
An atom is composed of 3 types of subatomic particles: protons, neutrons and electrons.
Protons and neutrons exist within the nucleus of the atom, and electrons exist in shells orbiting the nucleus.
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