1. The Sum of All Parts: Human Body Systems WEEKLY GOAL! Catalyst  Why do you get hungry?  What happens when you get very cold? Why?  Why do you use the restroom more when you drink a lot of liquid? Write in complete sentences! Don’t talk during the Catalyst!

2. Objectives  By the end of today, all SWBAT…  Identify the functions of the major body systems  Define homeostasis

3. Agenda  Catalyst Review  New Unit: Body Systems!  Scavenger Hunt  HOMEOSTASIS  Memory & Dominoes  Exit Question HOMEWORK: Body Systems Overview

4. Catalyst Review  Why do you get hungry?  You’re running low on energy and need to replace your nutrients back to normal.  What happens when you get very cold? Why?  You start shivering to generate heat to get your body temperature back to normal.  Why do you use the restroom more when you drink a lot of water?  Because your body needs to get rid of the extra water so that your fluid level goes back to normal.

5. New Unit: Human Body Systems & Health  This week, we are going to talk about…  How we breathe, how our heart works  How we digest food  But we’ll also learn about…  How we gain and lose weight  Why exercise is ESSENTIAL!!!!!  How humans interact with bacteria & viruses  How we fight off disease  SEX!!! (especially STIs and pregnancy)

6. Body Systems  Key Point #1: Your body is organized in this order: cells  organs  organ systems  Your body is made of cells.  Sometimes, a group of cells is called tissue (such as heart tissue instead of heart cells).  Organ = group of similar cells that do a job  Organ system = organs that work together to accomplish a job

7. A Nerve Cell

8. Nerve Cells (AKA tissue)

9. Organ: the brain

10. The Nervous System

11. Small Intestine Cell

12. Small Intestine Cells (tissue)

13. Small Intestine

14. The Digestive System

15. Check for understanding!!!!  The smallest unit of living things is the ________.  Order these from smallest to largest: organ, organ system, cell.  Describe an organ.  Describe an organ system.

16. Organ System Structures & Functions  Organ systems are specialized – they have a specific function.  TEXTBOOK SCAVENGER HUNT!!  Let’s check our answers.

17. Supports the body and protects organs Uses energy to produce movement Control center; coordinates communcation Distributes nutrients; removes wastes Exchanges gases—oxygen in, CO 2 out Breaks down food and absorbs nutrients Produces hormones Outside barrier and regulates temperature Eliminates liquid wastes Provides ability to make/have children Protects the body from disease

18. Nervous System Endocrine System Excretory System Muscular System Reproductive System Integumentary System Skeletal System Immune System

19. 1. Skeletal System 2. Muscular System 3. Nervous System 4. Circulatory System 5. Respiratory System 6. Digestive System Bones muscles Control center Pumps blood breathing Food for energy

20. 7. Endocrine System 8. Integumentary System 9. Excretory System 10. ReproductiveSystem 11. Immune System hormones skin peeing Making children Fights disease

21. The Whole Body  The human body is one big team.  Cells in an organ work together to make an organ function correctly.  Certain organs work together to make up an organ system that has a specific function.  But what makes the team win??????  Organ systems work together to maintain homeostasis.

22. But what’s the point? All of your body systems work together to do ONE THING…

23. Homeostasis  Key Point #2: Homeostasis is the process of maintaining a stable internal environment.  Stable = does not change (normal, even, balanced)  To function properly, your body needs to have a stable… Oxygen level Temperature Food intake Amount of water  KEEP THIS CONCEPT IN MIND ALL UNIT LONG. Every body system works to keep your internal environment stable.

24. Examples  How does your integumentary system maintain homeostasis?  Break it down: What does the system do? What organs make it up?  The integumentary system regulates body temperature through the skin and sweat glands. It keeps you at a stable (or normal) temperature when you get hot.

25. Examples  How does your respiratory system maintain homeostasis?  Break it down: What does the system do? What organs make it up?  Your respiratory system exchanges gases. It maintains homeostasis by making sure your oxygen levels are stable.

26. Examples  How does your circulatory system maintain homeostasis?  Break it down: What does the system do? What organs make it up?  The circulatory system distributes nutrients to, and removes wastes from, cells. It also helps to carry oxygen and water to cells. This helps maintain homeostasis by keeping oxygen and water levels stable.

27. Remember the Catalyst?  Why do you get hungry?  What body system can maintain homeostasis and how does it do it?  Nervous system  Oxygen level?  Temperature?  Food intake?  Amount of water?

28. Remember the Catalyst?  What happens when you get very cold?  What body system(s) can maintain homeostasis and how does it do it?  Integumentary system  Musclar system  Circulatory system  Oxygen level?  Temperature?  Food intake?  Amount of water?

29. Remember the Catalyst?  Why do you use the restroom more when you drink a lot of water?  What body system can maintain homeostasis and how does it do it?  Excretory  Oxygen level?  Temperature?  Food intake?  Amount of water?

30. Now you Try  Memory and Dominoes!!!

31. Key Point Wrap-Up  Key Point #1: Cells  Organs  Organ systems.  Key Point #2: Homeostasis is the process of maintaining a stable internal environment.  STABLE! (normal, even, level, or balanced) Oxygen levels, temperature, food intake, amount of water  Organ systems work together to maintain homeostasis.

32. Exit Questions 1. Which of the following is the correct function of the excretory system? A. To eliminate wastes B. To control all the body’s function C. To distribute nutrients D. To support the body and protect organs 2. Which of the following is made by the endocrine system? A. Energy B. Urine C. Hormones D. Blood 3. Describe what your body systems have to do to maintain homeostasis. (Be sure to include what has to stay stable!) Write in complete sentences! Don’t talk during the Exit Question!