1. ELAINE N. MARIEB EIGHTH EDITION 1 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY PART A The Human Body: An Orientation

2. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings The Human Body – An Orientation  Anatomy – study of the structure and shape of the body and its parts  Physiology – study of how the body and its parts work or function

3. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Anatomy – Levels of Study  Gross Anatomy  Large structures  Easily observable

4. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 14.4 Anatomy – Levels of Study  Microscopic Anatomy  Very small structures  Can only be viewed with a microscope

5. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.1 Levels of Structural Organization

6. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.2a Organ System Overview  Integumentary  Forms the external body covering  Protects deeper tissue from injury  Synthesizes vitamin D  Location of cutaneous nerve receptors

7. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.2b Organ System Overview  Skeletal  Protects and supports body organs  Provides muscle attachment for movement  Site of blood cell formation  Stores mineral

8. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.2c Organ System Overview  Muscular  Allows locomotion  Maintains posture  Produces heat

9. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.2d Organ System Overview  Nervous  Fast-acting control system  Responds to internal and external change  Activates muscles and glands

10. Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 1.2e Organ System Overview  Endocrine  Secretes regulatory hormones  Growth  Reproduction  Metabolism