1. (1.4)Human Systems - Digestive System
(p62-65)

2. Recall – 11 Human Systems

3. Human Digestive System
The body’s digestive system completes four tasks:
Ingestion
Digestion
Absorption
Elimination

4. Ingestion Ingestion: Food is taken into the body.
Once food in placed into the mouth digestion begins.

5. Digestion
Digestion: Food is physically broken down into nutrients (through dissolving and breaking into smaller bits) and also broken down chemically (through chemical reactions).

6. Absorption
During absorption, nutrients diffuse or are moved into the blood and carried to the cells.
Energy from these nutrients is made available to cells through cellular respiration.

7. Elimination
Elimination: Solid waste passes from the digestive system out of the body.

8. Organs of the Digestive System
Please label your digestive system diagram now.

9. Organ System Teaming
Organ systems working together carry out important tasks in the body.
Most tasks in the body need the support of two or more organ systems working together.
Can you identify some activities and the organ systems that work together to complete them?

10. Cellular Respiration Recall cellular respiration from last year?
glucose + oxygen  carbon dioxide + water
It’s how the body gets its energy requirements.

11. Cellular Respiration Glucose  from the digestive system
Oxygen  from the respiratory system
Circulatory system transports glucose and oxygen to cells.
Now cells have what they need for cellular respiration.

12. CLASSWORK BLM 1-30 Text: pg. 63 “Learning Check # 1 - 3
HAND IN BEFORE THE END OF CLASS
Quiz (Tissues and Organ Systems) and 1.4 (Respiratory System) tomorrow
BIOLOGY TEST #2 TUES. JUNE 4