Blood Facts
Which blood cells fight infection?
leukocytes
Which blood vessels that carry blood away from the heart and are more muscular and elastic?
arteries
What is it called when a foreign substance is circulating in the bloodstream?
embolus
What is the ballooning out of, or saclike formation on, an artery wall?
aneurysm
What is the valve between the right atrium and right ventricle that prevents blood from flowing back into the right atrium?
tricuspid valve
How many quarts of blood does the average adult have in their body?
4-6 quarts
What type of blood vessel has thin walls containing only one layer of cells?
capillaries
What is the name of the leukocytes that provide immunity for the body by developing antibodies and protect against the formation of cancer cells?
lymphocytes
What is the term for an inflammation of a vein near the skin surface, with the formation of a clot?
thrombophlebitis
Which chamber of the heart receives deoxygenated blood as it returns from body cells?
right atrium
Which of the following blood proteins does not aid in clotting?
hemoglobin
What blood cells contain hemoglobin?
erythrocytes
plasma, leukocytes, erythrocytes and thrombocytes
plasma, WBC, RBC and platelets
What disease has a common symptom of a severe, crushing pain that radiates to the arm, neck, and jaw?
myocardial infarction
Which chamber of the heart receives oxygenated blood as it returns from the lungs?
left atrium
How many pints of blood does an average human have?
10-12 pints
What procedure can be used to remove or compress deposits in arteries, or to insert a stent to allow blood flow?
angioplasty
What is a normal leukocyte count per cubic millimeter of blood?
4,500 to 11,000
What is the name of an inherited disease that occurs almost exclusively in males and in which the blood is unable to clot?
hemophilia
What is the name of the valve between the left atrium and left ventricle that prevents blood from flowing back into the left atrium?
mitral valve
What is the primary function of blood platelets in the human body?
To form blood clots and prevent bleeding
Which two blood proteins are necessary for the clotting of blood?
prothrombin and fibrinogen
What is a normal thrombocyte count per cubic millimeter of blood?
150,000 to 400,000
What is the name for dilated, swollen veins that have lost elasticity and cause stasis, or decreased blood flow?
varicose veins
What is the double-layered membrane that covers the outside of the heart?
pericardium