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Cardiovascular

QuestionAnswer
The Cardiovascular system made up of the heart and blood vessels is what type of system? Closed
What does the cardiovascular system transport to and from cells? Oxygen, nutrients, cell wastes, hormones to cells
The heart is the size of a what? Fist
The heart weights roughly how much? >1 pound
The heart is located in which cavity Thoracic cavity
What is the double walled sac that covers the heart? Pericardium
What are the two layers of the sac called? Parietal Pericardium, Visceral Pericardium
What are the 3 parts of the wall of the heart? Epicardium, myocardium, endocardium
Which layer is outside? Epicardium
Which layer is the middle? myocardium
Which layer is outside? endocardium
What are the 4 chambers of the heart? Left/Right Atria, Left/Right ventricles
Which valves are between the atria and the ventricles? atrioventricular valves
Which valves are between the atria and the ventricles? Aortic valves, Pulmonary Valves
What 3 parts nourish the heart in its own circulatory system? coronary arteries, cardiac veins, cardiac, signs
how many times per minute do atrial cells beat? 60
How many times per minute do ventricular cells beat? 20-40
What two systems regulate heart activity? autonomic nervous system, intrinsic conduction system
What are the 4 components of the intrinsic conduction system? SA node, av node, av bundle, purkinje fibers
What is known as a rapid heart rate, over 100 beats per minute? Tachycardia
What is known as a rapid heart rate, less than 60 beats per minute? Bradycardia
what refers to one complete heartbeat? Cardiac cycle
Average heart rate? 75 bpm
Which words means contraction? Systole
Which word means relaxation? Diastole
How long is a normal cardiac cycle? 0.8 seconds
Which heart sound is longer, louder cause by the closing of AV valves? Lub
Which heart sound is shorter, sharper, caused by the closing of semilunar valves at the end of ventricular system? Dup
What does CO stand for? Cardiac output
What does the SV stand for Stroke volume
What does HR stand for? Heart rate
The amount of blood pumped by each side of the heart in one minute is known as what?
The volume of blood pumped by each ventricle in one contraction or heartbeat is known as what? Stroke volume
What is known as the product of the heart rate and the stroke volume? cardiac output
what factors modify basic heart rate Neural controls, hormones and ions, physical factors
Created by: 007man7
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