What is the name of the blood cell which fight diseases?
White blood cells
Red blood cells
Plasma
Platelets
Blood vessels that bring blood towards the heart are called:
Capillaries
Pulmonary vein
Arteries
Vein
Glucose
Sugar
Starch
Food
Production of which gas is an indication of respiration?
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
Who first described arteries and vein?
Erasistratus
Galen
Michael Servetus
William Harvey
Who discovered the circulatory system?
Which gas turns calcium hydroxide solution into white or milky?
Which gas is the product of aerobic respiration?
The upper chamber of the heart into which the blood flow from the vein is called:
Atria
Vein that transports oxygenated blood from the heart.
Aorta
