The Heart

Question 1

Name the 3 blood vessels

Answer 1

Arteries, Veins and Capillaries

Question 2

What do arteries carry

Answer 2

Arteries carry oxygenated blood away from the heart, except the pulmonary artery, under high pressure with thick walls and a narrow lumen.

Question 3

What do veins carry

Answer 3

Veins carry deoxygenated blood to the heart and have thin elastic walls, a wide lumen, and valves to make sure the low pressure blood doesn’t move backwards

Question 4

How does blood get around the body

Answer 4

Through blood vessels

Question 5

What are capillaries

Answer 5

Capillaries carry blood to the organs and body systems under low pressure and the walls are one cell thick

Question 6

What is the vena cava

Answer 6

Very large veins that bring deoxygenated blood to the heart to get oxygen

Question 7

What’s the happens in the four chambers in the heart

Answer 7

The right atrium is one of the four chambers and receives blood low in oxygen from the vena cava and contracts into the right ventricle. The right ventricle pumps the deoxygenated blood to the lungs through the pulmonary artery. The left atrium receives the oxygen rich blood and pumps contracts it to the left ventricle. The left ventricle pumps the blood to the body through the aorta

Question 8

How can you prevent heart diseases

Answer 8

By exercising and having a healthy diet, you have low blood cholesterol, a fatty substance found in your blood. If you have too much blood cholesterol, your arteries can get blocked or lack of blood flow

Question 9

How are red blood cells specialised

Answer 9

They have a thin membrane so oxygen can diffuse easily