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47 Cards in this Set
- Front
- Back
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How many chambers are in the human heart?
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4
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What 2 things does the Circulatory System deliver?
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Oxygen and Nutrients
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What does the Circulatory System remove?
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Carbon Dioxide
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What are the 2 types of blood vessels?
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Arteries and Veins
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What is at the bottom of the heart that rests on the diaphram?
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The Apex
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What is the LUB DUB sound in the heart?
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●LUB: AV valves closing
●DUB: Semi lunar walls closing |
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What is stroke volume measured in? What would a healthy stroke volume be?
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It is measured in mm and the average SV is 70mm/beat
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What is the formula for Cardiac Output?
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Heart Rate × Stroke Volume
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What is an average Cardiac Output?
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5250/minute
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What is the sound of ventricle contracting?
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Sounds of Korotkoff
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What is Tachycardia?
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An increase in heart rate
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What is Bradycardia?
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A decrease in heart rate
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A stroke is the result of what?
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A blood clot in the brain
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A heart attack or myocardio is the result of what?
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A blood clot in the heart
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What is a smaller Artery called?
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An Arteriole
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What is a smaller Vein called?
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A Venule
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What are the 3 layers of Arteries?
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Smooth Inner, Muscle, Connective Tissue
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What do the smooth inner walls of Arteries do?
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They reduce friction
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In Arteries, what direction does the blood flow?
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Away from the heart
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In Veins, what direction does the blood flow?
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To the heart
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In Capillaries, what direction does the blood flow?
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One way
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What blood vessel is thin to allow for respiration?
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Capillaries
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What do Arteries carry?
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Deoxygenated blood that is under high pressure
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What do Veins carry?
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Deoxygenated blood under low pressure
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What is the formula for Stroke Volume?
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LVEDV - LVESV
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What is the formula for Ejection Fraction?
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EF (%) = SV (mL) / LVEDV (mL) × 100
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Erythrocytes are also called what?
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Red blood cells
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Leukocytes are also called what?
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White blood cells
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Name the 4 functions of the Heart.
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1. Delivery of oxygen and nutrients to the tissues of the body
2. Prevention of infection 3. Maintenance of a constant body temperature 4. Removal of carbon dioxide and water products from the tissues (D,P,M,R) |
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What is the path of blood flow in the Coronary Circulation from the Heart?
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1. Aorta
2. Coronary Arteries 3. Coronary Arterioles 4. Coronary Capillary Beds 5. Coronary Venules 6. Coronary Veins |
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What is Cardiac Output?
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The volume of blood that is pumped out of the heart in 1 minute
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What is the Pace Maker of the heart?
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The SA Node
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What is the Circulatory System composed of?
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The Heart, Blood Vessels and Blood
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Name the 4 layers of the heart from the inside to the outside.
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Endocardium, Myocardium, Epicardium and Pericardium
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What layer allows the heart to beat?
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The Myocardium
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Where does the Aorta Valve send blood?
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It sends it to the rest of the body
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What does the P Wave represent?
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Depolarization through the Atria
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What does the QRS Complex represent?
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Depolarization of the Ventricle
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What does the T Wave represent?
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Repolarization of the Ventricle
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If you have a heart attack, what Coronary Vessel in the Heart plugs up?
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The right coronary artery
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What is the Vascular System?
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A network of vessels that transport blood throughout the body
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Where does gas exchange?
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In the Capillaries
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What does the Semi Lunar Valve allow?
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It allows blood to only flow one way
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What are the 2 main components of Blood?
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Plasma and Blood Cells
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What 3 things are in Blood Cells?
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Red blood cells, White blood cells and Platelets
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What are the 2 types of Blood Pressure?
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Systolic and Diastolic
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What 2 factors affect Blood Pressure?
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Diet and Aerobic Exercise
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