Cardiovascular System

Question 1

Cardiovascular (circulatory) system and main function

Answer 1

Composed of heart, veins, arteries, capillaries transporting blood through body

Main function to deliver Oxygen to body tissue while removing carbon dioxide (protect body from infection, maintain body temp, fluid balance)

Question 2

Blood

Answer 2

Red (carry oxygen)
White (part of immune system)
Platelets (for clotting)
Plasma (blood cells, nutrients, waste)

Question 3

White blood cells

Answer 3

1. Monocytes (help breakdown bacteria)
2. Lymphocytes (create antibodies fight against harmful invaders)
3. Neutrophils (kill/digest fungi & bacteria, 1st line of defence)
4. Basophils (alarm for invaders)
5. Eosinophils (attack/kill parasites & cancer cells, help with allergic response)

Question 4

Heart

Answer 4

4-6L per min 5,700-8,600 per day

2 sides:
1. Atria (2 upper chambers receive blood)
2. ventricles (2 locker chambers pump blood)

Question 5

Heart sides and function

Answer 5

Right receives deoxygenated blood through veins pumps into pulmonary artery in the lungs to pick up oxygen and offload CO2

Left side receives oxygenated blood from lungs pumps into body via aorta

Question 6

Artery, veins & Capillaries

Answer 6

Artery carry O blood away from heart, branch into smaller vessels ‘arterioles’ deliver to capillaries

Capillaries are tiny vessels connecting arteries and veins, one cell thick allows water, O, CO2 and other nutrients to move between blood and surrounding tissue

Veins carry deoxygenated blood to heart