Which element in the blood is round and colorless?
Plasma
Platelets
Red blood cells
White blood cells
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
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 happens to blood when it is pumped into the thin-walled blood vessels of the lungs?
Platelets are exchanged for plasma
Carbon dioxide is replaced with oxygen
Blood fills the lungs and causes coughing
The lungs are just a place where blood goes through on its way back to the heart
Define blood pressure.
Pressure which drives blood round the digestive system
Pressure which drives blood round the respiratory system
Pressure which drives blood round the nervous system
Pressure which drives blood round the circulatory system
Which part of the human heart carries oxygenated blood?
Pulmonary artery
Hepatic portal vein
Pulmonary vein
Capillary artery
Normal human red cell:
are released into the circulation as immature cells called reticulocytes.
live for about 10 days.
rely on mitochondria for their ATP production.
are formed by budding off from large precursor cells called megakaryocytes.
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
Which component of blood is responsible for transporting oxygen throughout the body?
What is the organ that pumps blood all throughout the human body?
The lungs
The heart
The kidneys
The blood vessels and capillaries
