Honors Anatomy Sept 3, 2015

•SAP 1c: EXPLAIN THE ROLE OF HOMEOSTASIS AND ITS MECHANISMS AS THEY RELATE TO THE BODY AS A WHOLE•WARM UP: Define the following terms: Anatomy Physiology Homeostasis•CLASSWORK: PPT notes; •CLOSING: Explain the difference between positive and negative feedback

AnatomyGreek meaning: “cut” (tomy) “apart” (ana)Anatomy is the study of the structure and

shape of the body and its parts and their

relationships to one another.

Divisions of Anatomy

PhysiologyGreek meaning: “the study of”

(ology) “nature” (physio)Physiology is

the study of how the body and its parts

work and function.

•Anatomy and Physiology are ALWAYS related. •The parts of your body form a well-organized unit, and each of those parts has a job to do to make the body operate as a whole. •STRUCTURE determines what FUNCTIONS can take place.

LEVELS OF STRUCTURAL ORGANIZATION

HOMEOSTASIS•Describes the body’s ability to maintain relati vely stable internal conditi ons.•Dynamic state of equilibrium.

What do we need to LIVE?1. Maintaining Boundaries2. Movement3. Responsiveness4. Digestion5. Metabolism6. Excretion7. Reproduction8. Growth

WHAT DO WE BALANCE?

Positive versus Negative Feedback

• Rare • Increase the

original disturbance (stimulus) and push the variable farther from its original value

• blood clotting; child birth

• Most common• The net effect of the

response to the stimulus is to shut off the original stimulus reducing its intensity.

• heart rate; blood pressure breathing rate; blood levels of oxygen, glucose, carbon dioxide, and minerals

POPCORN

What branch of science focuses on the structure of organisms?

•Anatomy

What branch of science focuses on the functions of organ systems?

•Physiology

What term refers to the dynamic equilibrium in our bodies?

•Homeostasis

How do we maintain homeostasis?

•Homeostatic control system

What are the 3 parts to the homeostatic control system?

•Receptor•Control center•Effector

What are some functions of the integumentary system?

•Protection•Insulation•sensation

What is the main function of the muscular system?

•Movement or body temperature

What is the main function of the skeletal system?

•support