EMT JBLearning Book study words Questions With Complete Solutions

What is the equation to measure Cardiac Output? correct answer: CO=HR*SV (heart rate)*(stroke volume) Stroke volume correct answer: The amount of blood moved in one beat. In one min, the entire blood volume of 5-6 L is circulated through the vessels What is the equation to measure minute volume? correct answer: MV=RR*TV (respiratory rate) (Tidal volume) Calculation helps to determine if a patient is breathing adequately Tidal volume correct answer: Amount of air that is moved into or out of the lungs during a single breath, generally 500 L in an adult Inspiratory reserve volume correct answer: The deepest breath you can take after a normal breath Expiratory reserve volume correct answer: Maximum amount of air that you can forcibly breathe out after a normal breath Residual volume correct answer: The air that remains in the lungs after maximum expiration Dead space correct answer: The portion of the respiratory system that has no alveoli, therefore, little or no exchange of gas between air and blood occur in these spots. (ex. mouth) Normal adult heart rate correct answer: 60-100 bpm; during vigorous physical activity, the heart rate may rise to 180 bpm. At each beat, 70-80 mL of blood is injected into the heart Depolarization correct answer: The electrical charges of the network of tissues on the surface of the heart changes from positive to negative Repolarization correct answer: The electrical charges of the network of tissues on the surface of the heart returns to a resting state and the positive charge is restored Hypoxic drive correct answer: The bodies 'back up system' to control respiration; will also stimulate breathing when the oxygen levels fail, then sends signals to oxygen sensors Chordae tendineae correct answer: Thin bands of fibrous tissue that attaches to the valves in the heart and prevent them from inverting Tunica Media correct answer: The middle layer of the artery; where the smooth muscles are found that can contract and dilate to change the diameter of the blood vessel Systemic vascular resistance (SVR) correct answer: How dilated or constricted blood vessels are Systole correct answer: When the cardiac muscle of the LV contracts, it pumps blood from the ventricle into the aorta. The first load beat when taking blood pressure Diastole correct answer: When the cardiac muscle of the