1. Systems for nutrient absorption and transport

2. Digestive system function
Convert food into nutrients your body needs.
Rid the body of waste.

3. How does digestive system help with nutrient absorption for the body?
Digestion breaks foods down into simpler biomolecules for the circulatory system to absorb and transport throughout the body.

4. How does digestive system help with nutrient absorption for the body?
Enzymes in saliva begin the chemical breakdown of food.
Food travels down the Esophagus through smooth muscle contractions called Peristalsis.
The stomach helps break down food through stomach acid and Smooth muscle contractions.
The small intestines allow nutrients to be Absorbed into the bloodstream.
The large intestines maintain water levels and vitamin k

6. Circulatory system function
To transport molecules around the body
Waste, nutrients, etc…

7. How does the circulatory system help with nutrient absorption for the body?
Finger-like projections called villi line the small intestines
These are VEINS and ARTERIES!
Nutrients absorbed in the small intestine are pick up by red blood cells and transported throughout the body

8. Muscular system function
Contract (tighten up) and relax to produce movements

9. How does the Muscular system help with nutrient absorption for the body?
Peristalsis
Wave-like Muscular contractions that move food along the GI tract

10. Peristalsis
esophagus intestines

11. Endocrine system function
Regulates the body’s activities using hormones secreted by ductless glands
Hormones: chemical messengers

12. The Pancreas releases hormones to regulate blood sugar levels
How does the endocrine system help with nutrient absorption for the body?
The Pancreas releases hormones to regulate blood sugar levels
Insulin stimulates storage of glucose in cells
Glucagon stimulates release of glucose into blood