1. Grade 8 Science “Cells, Tissues, Organs & Systems”

2. Systems...
All systems have the following characteristics:
Made up of individual parts that work together as a whole

3. Often connected to one or more systems
If one part of a system is missing or damaged, the system will not function well or may not function at all.

4. Levels of Organization
cells
tissues
Organs
Organ systems
organisms

5. Tissues
Groups of similar cells
Found in all multicellular organisms
Ex. Muscle tissue, nerve tissue, epithelial tissue, etc.

7. Organs
Groups of tissues. Made up of two or more types of tissues.
They are distinct structures that perform specific functions.

8. Ex. Lungs, kidneys, heart, etc.

9. Organ Systems
A group of organs that perform activities that help the body as a whole.
6 examples of organ systems are...

10. Systems to study Digestive System Circulatory system Nervous System
Respiratory System
Excretory System
Muscular System

11. 1. Digestive System
Consists of:
Mouth
Liver
Esophagus
Gall Bladder
Stomach
Pancreas
Small Intestine
Large Intestine

12. Function:
To take in and break down food, absorb nutrients, and eliminate solid waste.

14. 2. Circulatory System
Consists of:
Heart
Arteries,
Veins
Capillaries

15. Function:
To transport blood, nutrients (chemicals needed for survival), gases (oxygen and Carbon Dioxide) and wastes.

17. 3. Nervous System
Consists of:
Brain
Spinal cord
Nerves
Sense organs

18. Function:
To detect changes in the environment and to signal these changes to the body which then carries out a response.

20. 4. Respiratory System
Consists of:
Nasal cavity Aveoli
Trachea Ribs
Lungs Diaphragm
Bronchi

21. Function:
To control breathing, and exchange gases in lungs and tissues.

23. 5. Excretory System
Consists of:
Lungs
Kidneys
Urethra
Urinary bladder
Ureter

24. Function:
To remove liquid and gas wastes from the body

26. 6. Muscular System
Consists of:
Muscle tissue, ligaments and tendons connected to bones throughout the body.

27. Function:
To work with the bones to move body parts

29. Other Systems Other Systems:
Endocrine System: Made up of glands and hormones that regulate the bodily functions
Skeletal System:Made up of bones and joints that support and help in bodily movement
Immune System: Consists of lymphatic vessels, lymph nodes, bone marrow, spleen, liver, white blood cells that help protect the body from infections and illnesses

30. WORKSHEET- BODY SYSTEMS
Please fill in worksheet on the back of the notes

31. Research
We are going to create groups and each group will be responsible to learn about, and then teach the rest of the group about their system by answering the questions given.
Each group will have to make a quick presentation, will need some sort of graphic and a short write up that can be shared with the rest of the class.

32. The questions to answer are:
What is your organ system?
What is the main function of the system?
What organs, tissues and cell types are involved in the systems function?
How do they all function together?
A graphic of the system within the human body

33. Rubric
Evaluation Rubric

34. You have a limited time to work on this so I suggest that you assign people to roles and give each person a ‘task’ to complete
Ie one person to find organs involved and how they function together, one to make a picture/ structure, one person to find what the system does