e Ohoe Please eirele the best answers) to the foellowing questions, Note that th
ID: 3512920 • Letter: E
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e Ohoe Please eirele the best answers) to the foellowing questions, Note that there can be one eorreet answer to each question, and that you will receive 1 point for each correct more than nswen 0 points for leaving it blank, and-1/2 point for each incorrect answer The following statementco) is(are) true about the healthy heart a. The let ventricular wall is thinner than the right ventricular wall since the left ventricle typically pumps at lower pressures than the right side The cardiac output on the left side of the heart is higher than the right side of the heart b. The atrioventricular valves are closed during systolic ejection. The aortie valve is open during isovolumetric relaxation. The left ventricle pumps blood into the aorta, and the right ventricle pumps blood d. into the pulmonary vein 2. The following statement(s) is(are) true about left ventricular pressure a. During isovolumetric contraction, it is higher than left atrial pressure but lower than aortic pressure. b. During systolic ejection, it is higher than left atrial pressure but lower than aortic pressure e. During isovolumetric relaxation, it is lower than aortic pressure but higher than left atrial pressure. d. During diastolic filling it is lower than both aortic pressure and left atrial pressure. 3. Circle the following statement(s) that is(are) true about the phases of the heart Filling occurs during systole and ejection during diastole b. a. Systole has two phases: isovolumetric relaxation and ejection. c. Isovolumetric contraction during systole is when the heart does not expand or contract, but simply reduces its pressure. d. Systole is longer than diastole in a health heart while a person is at rest. Left ventricular pressure increases during isovolumetric contraction. e. 4. The Frank Starling curve is a means of understanding the following information: The relationship between left ventricular pressure and end systolic volume. b. a. The relationship between cardiac output and preload. c. The relationship between left ventricular pressure and afterload d. All of the above. 5. The following statement(s) is(are) true about pulmonary physiology: a. b. Tidal volume represents the volume of air inhaled /exhaled for one breath. Vital capacity is the difference between the largest volume of air that can be inhaled by the lungs and the lowest volume of air the lungs can be emptied to.Explanation / Answer
1) option e is correct.
Left ventricle pumps blood into aorta whereas right ventricle jnto pulmonary vein.
Left ventricular wall is thicker than right side as it is exposed to higher pressure.
Cardiac output falls in the same range,however ejection fraction slightly differs.
AV valves are closed during isovolumetric ventricular contraction,whereas ejection occurs in ventricular systole proper phase.
Av valve is open during isovolumetric ventricular relaxation phase.,whereas aortic valve opens during ventricular systole proper.
2) option b is correct.
3)option c is correct.
4) option b is correct.
Frank starling law states relationship between EDV and force of contraction of myocardium.
5) option a is correct
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