1. Introduction to Anatomy and Physiology

2. Definitions and Terms
Anatomy – study of the structure and form of living things
Physiology – study of the processes or functions of living organisms, or why and how they work
Pathology – study of abnormal anatomy; abnormal structure
Pathophysiology – study of abnormal function or process

3. Remember, before you can study the abnormal, you have to understand the normal, and we will get to that.

4. Cytology – study of cells
What is a cell?

5. A cell is the smallest unit of life
A cell is the smallest unit of life. Cells are the building blocks of life. Some organisms, like bacteria, are unicellular, a single cell. Others, like humans, are multicellular.

6. Remember, cells are the building blocks of life.

7. A group of cells working together is called a tissue
A group of cells working together is called a tissue. For example, several muscle cells working together, make a muscle tissue.

8. The study of tissues is called histology.
The human body has 4 types of tissues:
Epithelial tissue lines body surfaces and body cavities.
Connective tissue supports or connects body parts.
Nerve tissue transmits messages throughout the body.
Muscle tissue is responsible for movement of body parts.

9. A group of tissues working together is called an organ
A group of tissues working together is called an organ. For example, the stomach, an organ, is made up of muscle tissue that churns the stomach, and epithelial tissue lines the stomach and secretes the digestive “juices” (enzymes).

10. A group of organs working together is called an organ system
A group of organs working together is called an organ system. For example, the digestive system is an organ system made up of several organs working together to digest your food.

11. A group of organ systems working together is called an organism
A group of organ systems working together is called an organism. For example, human beings are organisms. We are made up of several organ systems working together.

12. Summary: