Absorption Of Materials

Question 1

What needs to be absorbed into the bloodstream to be delivered to cells for respiration?

Answer 1

oxygen and nutrients from food must be absorbed into the bloodstream to be delivered to cells for respiration

Question 2

What must be removed from cells into the bloodstream?

Answer 2

waste materials such as carbon dioxide must be removed from cells into the bloodstream

Question 3

Why do tissues contain capillary networks?

Answer 3

Tissues contain capillary networks to allow the exchange of these materials at cellular level

Question 4

What increases the efficiency of absorption?

Answer 4

• large surface area
• thin walls
• extensive blood supply

Question 5

What are the gas exchange organs?

Answer 5

LUNGs are the gas exchange organ

Question 6

What do lungs have?

Answer 6

lungs have large air sacs called alveoli

Question 7

How is oxygen and carbon dioxide absorbed?

Answer 7

oxygen and carbon dioxide is absorbed through the thin walls of the alveoli to or from many blood capiliaries

Question 8

How are the that nutrients from food absorbed?

Answer 8

nutrients from food are absorbed through villi in small intestine

Question 9

How is the villi efficient at absorbing materials?

Answer 9

• lining is only one cell thick

- a large network of blood capillaries.

Question 10

What do the blood capillary absorb?

Answer 10

blood capillary absorb glucose and amino acids

Question 11

What do the lacteal absorb?

Answer 11

lacteal absorbs fatty acids and glycerol