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Uni:7:8
Circulatory System (Updated)
Question | Answer |
---|---|
cause the cyclic contraction of the heart muscles. | Electrical impulses originating in the heart |
The movement of the electrical impulse in the heart can be used | to detect abnormal activity or disease. |
The smallest branches of arteries are called | arterioles. |
Capillaries have thin walls containing | only one layer of cells. |
allow oxygen and nutrients to pass through to body cells. | Capillaries |
blood proteins necessary for the clotting of blood. | Fibrinogen and prothrombin |
carries both oxygen and carbon dioxide. | Hemoglobin |
a result of injury to or destruction of the bone marrow | Aplastic anemia |
a foreign substance circulating in the bloodstream. | embolus |
A common symptom of a myocardial infarction is | a severe, crushing pain that radiates to the arm, neck, and jaw. |
a chronic, inherited anemia that occurs almost exclusively among African Americans. | Sickle cell anemia |
abnormal heart rhythms that can be mild to life threatening. | Arrhythmias are |
may be used to remove or compress deposits in arteries, or to insert a stent to allow blood flow. | Angioplasty |
If not treated, it can cause permanent damage to the heart, blood vessels, and kidneys. | hypertension |
The muscle layer of the heart is the | myocardium |
The chamber of the heart that receives deoxygenated blood as it returns from body cells | right atrium |
The chamber of the heart that receives oxygenated blood as it returns from the lungs is the | left atrium |
The valve between the right atrium and right ventricle that prevents blood from flowing back into the right atrium is the | tricuspid valve |
The valve between the left atrium and left ventricle that prevents blood from flowing back into the left atrium is the | mitral valve |
The blood vessels that carry blood away from the heart are the | arteries |
blood vessels that contain valves to prevent blood from flowing in a backward direction are the | veins |
The blood vessels that are more muscular and elastic than are the other blood vessels are the | arteries |
2 to 4 quarts 4 to 6 quarts | 4 to 6 quarts |
The largest artery in the body is the | aorta |
Which of the following blood proteins does not aid in clotting? | hemoglobin |
The blood cells that contain hemoglobin are the | erythrocytes |
The number of erythrocytes in one cubic millimeter of blood is | 4.5 to 6 million |
The bright red color of blood indicates | hemoglobin-carrying oxygen |
The blood cells that fight infection are the | leukocytes |
The blood cells that fight infection are the | leukocytes |
A normal thrombocyte count per cubic millimeter of blood is | 250,000 to 400,000 |
lack a nucleus, vary in shape and size, required for the clotting process | Thrombocytes |
An inherited disease that occurs almost exclusively in males and in which the blood is unable to clot | hemophilia |
An inflammation of a vein with the formation of a clot is | thrombophlebitis |
The leukocytes that provide immunity for the body by developing antibodies and protect against the formation of cancer cells are | lymphocytes |
Dilated, swollen veins that have lost elasticity and cause stasis, or decreased blood flow, are called | varicose |
race, smoking and obesity | increases the incidence of hypertension |
things that blood transports through the body | oxygen, carbon dioxide, nutrients (vitamins, carbohydrates, proteins, mineral salts or electrolytes), metabolic and waste products, heat, hormones |
occurs when fatty plaques are deposited on the walls of arteries | atherosclerosis |
treatments used to control hypertension | anti-hypertensive drugs, diuretics, limited stress, avoidance of tobacco, low-sodium and/or low-fat diet |