TRANSPORTATION

Question 1

What is blood?

Answer 1

> Blood is a fluid connective tissue

> Blood consists of a fluid medium called plasma in which the cells are suspended

> Plasma transports food, carbon dioxide and nitrogenous wastes in dissolved form.

Question 2

The heart

Answer 2

> The heart is a muscular organ which is as big as our fist.

> the heart has different chambers to prevent the oxygen-rich blood from mixing with the blood containing carbon dioxide.

> The carbon dioxide-rich blood has to reach the lungs for the carbon dioxide to be removed, and the oxygenated blood from the lungs has to be brought back to the heart. This oxygen-rich blood is then pumped to the rest of the body.