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What would you expect to occur in heart failure?
Question 10 options:
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The ability to overcome afterload |
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An increase in preload |
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An increase myocardial muscle contractility |
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A decrease in oxygenation to tissues |
Step by step
Solved in 3 steps
- Which of the following arrythmias is characterized by extremely fast but coordinated contractions? Group of answer choices Second degree heart block Bradycardia Atrial flutter Ventricular fibrillationQUESTION 8 Which sequence is correct regarding the direction of blood filow through the cardiovascular system: O Aorta, pulmonary artery, vena cava, pulmonary vein O Aorta, carotid artery, pulmonary vein, pulmonary artery O Pulmonary vein, pulmonary artery, aorta, Vena cava O Aorta, pulmonary vein, tricuspid valve, left ventricle O Aorta, Vena cava, tricuspid valve, right ventricleWhich of the terms in the following pairs is correctly matched? Group of answer choices Heart contraction : systole Stroke volume : end systolic volume minus end diastolic volume End diastolic volume : volume of blood in the ventricle immediately after it has contracted Passive filling : blood moves into the ventricles because the atria contract
- Select the best answer or answers from the choices given: In the heart, which of the following apply? (1) Action potentials are conducted from cell to cell across the myocardium via gap junctions, (2) the SA node sets the pace for the heart as a whole, (3) spontaneous depolarization of cardiac cells can occur in the absence of nerve stimulation, (4) cardiac muscle can continue tocontract for long periods in the absence of oxygen. (a) all of the above, (b) 1, 3, 4, (c) 1, 2, 3, (d) 2, 3.QUESTION 4 Match the arrhythmias with their correct definitions: A. Slow heart rate caused by the AV node taking over as pacemaker B. Overly slow heart rate C. Overly fast heart rate * Bradycardia + Fibrillation * Tachycardia D. Rapid and irregular contraction of heart muscle E. Failure of the SA node to send signals to the AV + Heart Block + Junctional rhythm nodeWhat would your interpretation of this rhythm be? tututu Normal sinus rhythm with ventricular arrest Second degree heart block type I Second degree heart block type II Third degree heart block alah ↓
- Which event occurs during ventricular systole? Question 43 options: Chordae tendineae are loose Semilunar valves are closed The left ventricle is dilated Papillary muscles are relaxed Atrioventricular valves are closedQUESTION 6 Which sequence is correct regarding the direction of blood flow through the cardiovascular system: Pulmonary vein, left atrium, left atrium, pulmonary artery Pulmonary vein, left atrium, left ventricle, aorta Pulmonary artery, aorta, left atrium, right atrium Vena cava, right atrium, aorta, right ventricle Vena cava, right atrium, pulmonary vein, right ventricleIf you have a resting heart rate of 125 beats/min or bpm then you have: a normal heart rate, bradycardia, or tachycardia
- Please answer all 3 questions below. These are the only questions left. Question 14 Select one answer.One of the determinants of blood pressure is cardiac output. Which of the following most directly determine cardiac output? a. stroke volume and vascular diameter b. stroke volume and heart rate c. viscosity and heart rate d. arteriolar diameter and viscosity NOTE: C IS INCORRECT Question 15 Select one answer. One of the determinants of blood pressure is vascular resistance. Which of the following lists each of the factors that most directly determine vascular resistance? a. vessel diameter and vessel length b. viscosity, vessel diameter, vessel length, and hematocrit c. viscosity, vessel diameter, and vessel length d. viscosity, vessel diameter, vessel length, and flow through the vessel NOTE: A IS INCORRECT Question 25 Select one answer. Right ventricular systolic pressure is less than left ventricular systolic pressure because __________. a. the right ventricle pumps less blood b.…92) Referring to the Cardiac Output formula, which value is most important in determining the cardiac output for an individual who is in good shape? Group of answer choices End-systolic volume Heart Rate End-diastolic volume Stroke Volume 93)The type of regulation of the heart that causes the heart rate to increase up to 250 bpm by opening calcium channels in the SA node is ________________________ Group of answer choices Sympathetic regulation Parasympathetic regulation Respiratory regulation Intrinsic regulation 94) The correct formula for the mean arterial pressure is ___________________. Group of answer choices diastolic pressure + 1/3 pulse pressure None of the above diastolic pressure/3 + pulse pressure/3 systolic pressure – diastolic pressureThe events of the cardiac cycle cause cyclical changes in left ventricular pressure and volume over time. Another way to represent these events is with a pressure-volume loop, as shown below. Drag the labels from the left into the appropriate boxes on the pressure- volume loop to demonstrate your understanding of the cardiac cycle. Aortic valve closure AV valve opening Systolic pressure Isovolumetric relaxation Isovolumetric contraction 120 Diastolic pressure Ventricular filling 80 End-diastolic volume Ventricular ejection 40 AV valve closure End-systolic volume Aortic valve opening 60 120 LV volume (mL) O McGraw-Hill Education Reset LV pressure (mm Hg)