1. 2.1 Body Systems + Nutrients
Chapter 2 notes

2. Characteristics of systems
Made up of individualized parts that work together
Connected to other systems
If one part is missing or damaged, the system will not work well or at all

3. The 11 systems 1) Circulatory
Transports blood, nutrients, gasses, and wastes
2) Digestive
Takes in and breaks down food, absorbs nutrients, and eliminates wastes

4. The 11 Systems 3) Respiratory
Controls breathing and exchanges gases in lungs and tissues
4) Excretory
Removes liquid and gas wastes
5) Immune
Defends the body against infections

5. The 11 systems
6) Endocrine Manufactures and releases hormones 7) Reproductive Organs for producing offspring 8) Integumentary Skin, hair, and nails provide a waterproof protective barrier

6. 9) Skeletal
Support, protects, and works with muscles to move the body 
10) Muscular
Works with bones to move body parts
11) Nervous
Detects changes in the environment and signals changes to the body

7. 4 Levels of organization
cells  tissue organ  organ system  organism

8. 4 tissue types
Muscle – assists in body movement and helps organs function
Nerve – transfers signals to tell the body how to respond 1. 2. 3. 4.

9. 4 Tissue Types Connective – holds together and supports other tissue
Epithelial – covers organs and body systems

10. nutrients
Nutrients are substances the body requires for energy, growth, development, repair or maintenance
4 food groups:
grains milk products
fruit/veggies meat/alternatives

11. Nutrients Food pyramid – six groups of different sizes.
Processed food is higher up so you should eat less of it

12. Types of nutrients Carbohydrates
Simple sugars like glucose are needed by the mitochondria
complex sugars are huge chains of simple sugars that are broken down before being used 

13. Types of nutrients Proteins
build parts of your muscle, skin, hair and nails

14. Types of nutrients Fats
build cell membranes and stored for future energy use
Unsaturated fat is good - liquid from plants and fish
Saturated fat is bad - solid from animals can lead to plaque (fatty material) build up in blood vessels

15. Types of nutrients Minerals and Vitamins
Things that our body needs in small amounts
Calcium helps with teeth and bone formation and muscle and nerve activity
Vitamin D assists in absorbing calcium
Fluorine helps with dental cavity reduction
Iron is part of red blood cells that transport oxygen
Sodium helps with nerve activity

16. Types of nutrients
Magnesium helps with muscle and nerve activity and bone formation
Phosphorus needed for teeth and bone formation, muscle and nerve activity
Potassium for muscle and nerve activity
Sulphur for hair, nail, and skin building

17. Types of nutrients Water Transports nutrients and wastes
chemical reactions
cooling the body

18. What do you think were the three big ideas from today’s lesson?
Summary
What do you think were the three big ideas from today’s lesson?