White blood cells helps in :
transporting oxygen throughout the body.
fight of diseases or other pathogens that invade the body.
help the blood coagulate, or clot, when necessary.
allows it to flow freely through the various vessels.
What is the circulatory system?
The body's breathing system
The body's system of nerves
The body's food-processing system
The body's blood-transporting system
Which is the cause of coronary heart disease?
Fatty material and other substances form a plaque build-up on the walls of the coronary arteries
Fatty material and other substances form a plaque build-up on the walls of the capillary artery
Fatty material and other substances form a plaque build-up on the walls of the capillary veins
Fatty material and other substances form a plaque build-up on the walls of the venules
Which part of the human heart carries oxygenated blood?
Pulmonary artery
Hepatic portal vein
Pulmonary vein
Capillary artery
What is the function of the blood vessels and capillaries?
They pump blood to the heart.
They filter impurities from the blood.
They carry blood to all parts of the body.
They carry messages from the brain to the muscles.
What is the organ that pumps blood all throughout the human body?
The lungs
The heart
The kidneys
The blood vessels and capillaries
Which component of blood is responsible for transporting oxygen throughout the body?
Red blood cells
White blood cells
Platelets
Plasma
Which element in the blood is round and colorless?
What is passive immunity?
A short-term immunization induced by the transfer of antibodies
The defense system with which we were born
Immunity that develops with exposure to various antigens
Immunity due to antibodies that are produced in a body other than our own
