1. Anatomy & Physiology!!

2. DO NOW Lets review some biology… –How are our bodies organized? –What are the characteristics of life? –What factors do our bodies require for survival? –How do our bodies maintain homeostasis?

3. Objectives To define anatomy and physiology To explain the biological levels of organization To list and describe the major characteristics and requirements of life To explain homeostasis and give examples of how the body maintains it

4. Chapter 1 “Introduction to Human Anatomy and Physiology”

5. Anatomy & Physiology Anatomy: branch of science that deals with the structure of body parts. Physiology: concerns the functions of body parts *Why is it important to study these sciences?

6. Requirements for Life 1)Water Provides environment for chemical reactions to take place. 2)Food Energy, build new materials, regulation 3)Oxygen Releases energy from food 4)Heat Determines rate of reactions 5)Pressure Important in breathing

7. Maintaining Life… Made of cells Responds to stimuli Grows and develops Reproduces Needs energy!! Adapts Maintains homeostasis Displays organization

8. Homeostasis Homeostasis= A stable internal environment Maintained through homeostatic mechanisms.

9. Homeostatic Mechanisms 1)Receptor - Provides information about conditions. 2)“Set point” - Tells what a particular value should be (ex: temp = 98.6) 3)Effector - Causes a response that alters internal evironmental conditions.

10. Negative Feedback

11. Homeostatic Mechanisms

12. Levles of organization

13. Atoms  molecules  macromolecules (proteins, carbs, nucleic acids, lipids) Macromolecules  Cells  Tissues  organs  organ systems  Organisms!

14. Anatomical Terminology