Challenge Problem 1. The function of the urinary system is to___ 2. T/F- the heart and blood vessels belong to the muscular system 3. Give an example of when the nervous system is used. 4. Lungs and the trachea are part of the ____ 5. Why is the integumentary system important?

The Human Body: An Orientation Part 1

Review What is Anatomy? Give an example of Anatomy of the Cardiovascular System What is Physiology? Give an example of Physiology of the Digestive System

Get out system notes from Friday If you need to get your poster do so now.

Overview Levels of Structural Organization Maintaining Life Homeostasis

Levels of Structural Organization What is the smallest thing known to Humankind? What are ALL THINGS (living and non-living) made of?

From Atoms to Organisms 1) Atoms Tiny building blocks of matter 2) Cells The smallest unit of living things 3) Tissues A group of similar cells that have a common function

From Atoms to Organisms 4) Organ Made of two or more tissues and performs a specific function for the body 5) Organ System A group of organs that cooperate to accomplish a common purpose 6) Organism A group of organ systems that make up the highest level of living structural organization

The Human Organism Without looking at your notes, Can you name all 11 organ systems that make up the human organism?

Body Systems Skeletal System Muscular System Nervous System Endocrine System Cardiovascular System Lymphatic System Respiratory System Digestive System Urinary System Reproductive System Integumentary system

Maintaining Life- stuff we have to do 1) Maintaining Boundaries Organisms must keep their “insides” separate from the “outside” Which Human Body System maintains this essential boundary? Why is maintaining a boundary important?

Maintaining Life 2) Movement Necessary for motility and to perform bodily functions such as digestion and pumping blood. Which Human Body System is responsible for movement? Why is motility important?

Maintaining Life 3) Responsiveness The ability to sense changes in the environment and react to them What TWO Human Body Systems are responsible for responsiveness? Why is responsiveness important?

Maintaining Life 4) Digestion The process of breaking down food into molecules that can be used by the body 5) Metabolism All chemical reactions that occur in the body 6) Excretion The process of removing wastes from the body

Maintaining Life Why is it important to be able to break down food through digestion? Why do you think chemical reactions are necessary in the body? Why is it important to be able to excrete waste from the body?

Maintaining Life 7) Reproduction The production of offspring Why is reproduction an important function of the body?

Maintaining Life 8) Growth An increase in size Why is growth an important aspect of living things?

Maintaining Life- stuff we need Survival Needs Nutrients Oxygen Water Body Temperature Atmospheric Pressure

Challenge Problem- 9/4/14 1. Older people with diabetes will often end up with kidney failure. What would result if a person loses function of their kidneys? 2. Compare the urinary system and the digestive system. (how are they similar?) 3. Contrast the integumentary system and the skeletal system. (how are they different?)

FLT I will be able to tell my partner what Homeostasis is and give and example of how it is controlled by taking notes and a quiz before I get out of class

Homeostasis What do you think Homeostasis means?

Homeostasis The body’s ability to maintain relatively stable internal conditions despite ever-changing external conditions In your notes, write a definition with an example in your own words.

Brainpop Take 2 minutes and see if you can answer the questions before we we watch the video

Homeostasis How do we control Homeostasis? Negative Feedback Loops (Feedback Inhibition) A system in which the effect of a stimulus turns off or reduces the original stimulus Lets look at an example

Feedback Inhibition Loop: A home heater Room Temp. Decreases Room Temp. Increases Thermostat senses temp. increase and switches heater off Thermostat senses temperature decrease and switches heater on

How is the house heater like the Human Body? What happens to you when you get very cold?

Feedback Inhibition Loop: Your Body - too COLD BODY Temp. Decreases too much BODY Temp. Increases to normal Your body stops shivering (Thermostat OFF) Your body shivers and shakes to warm you (thermostat ON)

What about when you get too hot? What happens?

Feedback Inhibition Loop: Your Body - too HOT BODY Temp. Decreases to normal BODY Temp. Increases too much Your body produces sweat to cool you. Your body stops producing sweat

Feedback Inhibition Feedback inhibition is a process utilized by many body systems in order to maintain homeostasis.

Homeostasis Write in your notes an example that will help you remember what Negative Feedback is. What happens when our bodies are unable to maintain homeostasis? (Homeostatic Imbalance)

Quick Quiz 5 min 1. Name the 6 levels of living structural organization. 2. Name one of the requirements for maintaining life(functions), and say why it is important. 3. Give a definition for Homeostasis IN YOUR OWN WORDS 4. Give an example of a Negative Feedback Loop Why are they needed/why are they important