Absorbtion Of Materials

Question 1

Describe blood

Answer 1

Oxygen and nutrients from food must be absorbed into the bloodstream to be delivered to cells for respiration.
Wage materials such as carbon dioxide, must be robbed from cells into the blood stream

Question 2

Describe tissue structure and function

Answer 2

Tissues contain capillary networks that allow the exchange of materials to a cellular level

Question 3

How are surfaces involved in the absorption of materials suited to their job

Answer 3

-Large surface area
-Thin walls
-Extensive blood supply

These all increase the efficiency at which materials are absorbed

Question 4

Describe the function of the lungs

Answer 4

The lungs are gas exchange organs. The consist of a large number of alveoli providing a large surface area for gas exchange

Oxygen into the blood is exchanged for carbon dioxide out of the blood

Question 5

How are nutrients absorbed into the blood?

Answer 5

Nutrients from the food are absorbed into the blood in the small intestine

The small intestine contains a large number of thin walled villi to provide a large surface area for this absorption