Cardio Vascular System

Question 1

Red Blood Cells

Answer 1

Carries oxygen to all the cells in the body

Question 2

White Blood Cells

Answer 2

Protects the body from infection by destroying microbes

Question 3

Platelets

Answer 3

Causes blood clots when blood vessels need repair

Question 4

Plasma

Answer 4

Carries all the different components such as sugars, salts, hormones, proteins and carbon dioxide

Question 5

Arteries

Answer 5

Carries blood away from the heart; they have thick, muscular walls and carry under high pressure

Question 6

Veins

Answer 6

Carries blood towards the heart; they have thin elastic walls and carry blood under low pressure

Question 7

Capillaries

Answer 7

Carries blood past cells; they are only one cell layer thick to easily allow chemicals into the cells

Question 8

List the order the blood travels through the heart

Answer 8

Vena cava, right atrium, right ventricle, pulmonary artery, lungs(oxygenated), pulmonary vein, left atrium, left ventricle, aorta, rest of the body

Question 9

Is the pulmonary artery located above or below the pulmonary vein

Answer 9

Above

Question 10

Describe the two loops in the double circulatory system

Answer 10

1) Carries deoxygenated blood to the right side of the heart and then to the lungs to get oxygenated
2) Carries oxygenated blood from the lungs to the left side of the heart, and then to the rest of the body

Question 11

Why do humans need double circulatory systems

Answer 11

To make sure our cells are provided with oxygenated blood and not a mixture of oxygenated and deoxygenated