During the isovolumetric relaxation phase of ventricular diastole:O a) Both ventricular volume and ventricular pressure decreaseO b) Both ventricular volume and ventricular pressure increaseO c) Ventricular volume and ventricular pressure remain constantO d) Ventricular volume remains constant but ventricular pressure decreases

Ventricular diastole:- Is the period during which the two ventricles are relaxing from the wringing…

Answered: During the isovolumetric relaxation…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter9: Cardiac Physiology

Section: Chapter Questions

Problem 12RE

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Similar questions

During isovolumetric ventricular contraction: a) all valves are open and pressure within the ventricles decreases. b) all valves are open and pressure within the ventricles increases. c) all valves are closed and pressure within the ventricles decreases. d) all valves are closed and pressure within the ventricles increases.
Select the TRUE statement/s: During the isovolumetric contraction phase in the cardiac cycle, OA) the SL valves are open O B) the intraventricular pressure is increasing O C) the intraventricular volume does not change OD) Both A and C OE) Both B and C
The effective-refractory period present during Phase 2 of the actionpotential of ventricular myocytes:A)is relatively long because the Na+ current does not inactivate. B) is relatively long because K+ current is immediately activated once membrane potential becomes positive. C) prevents tetanus in the heart. D) is about twice as long as in skeletal muscle
If an individual has a heart rate of 80 bpm; end diastolic volume of 140 ml and end systolic volume of 100 ml; calculate the cardiac output: OA) 8,000 ml B) 1,200 ml O. C) 3,200 ml OD) 4,000 ml O E) 6,000 ml
4) A) Calculate the Systolic Pressure of a 65 years old man if the diastolic blood pressure is 90 mmHg and stroke volume of 70 ml/beat. Total Peripheral Resistance is 19mmHg.min/L. Assume person is healthy and has a normal heart rate. B) Calculate Left ventricular end-diastolic volume (LVEDV) when the mean ejection fraction is 80 % ?
The ST segment in the EKG is typically quiet and on the isoelectric line (like the T-P segment). What is happening during the ST segment in the EKG such that we see no waves? a) There is no electrical activity happening in the ventricles between the S and T waves b) The heart is relaxed and filling with blood c) The ST segment is representative of the plateau of the many ventricular action potentials happening at that point d) There is no longer Na+ influx during the ST segment so no waves are visible e) The ST segment is during ventricular repolarization and repolarization is not seen on the EKG
Which heart activity correlated with the hi-lighted portion of the EKG in this image? A)ventricle depolarization B) repolarization C) right heart depolarization D) atrial depolarization
106 Depolarization (phase 0) of cardiac pacemaker cells is slower than that of ventricular myocytes and depends on which of the following ion movements? A) Caefflux B) Cat influx C) Na efflux D) Na influx E) K-efflux F) K influx
70 Which of the following phases of the ventricular action potential most closely coincides with the T wave of the ECG? OA) OB) A B с O C) D E D) E)
CHOOSE ALL THAT APPLY ** The tricuspid valve is open A) while the ventricle is in diastole B) while the atrium is contracting C) by the movement of blood from atrium to ventricle D) when the mitral valve is open
) The blood that remains in the ventricles at the end of ejection is called the residual volume and is typically about sSomL. Congestive heart failure is caused by ventricle. This could result in all of the tollowing excepti al Pulinonary edema b) decreased aortic reduced pumping etficieney of of the left pressure and blood flow. c) right ventricolar failure dl congestion of blood in e) residual volume the pulmonary artery. less than soml. a small hydropho bie molecule that can the freely diff 2) Carbon dieride acress plama membranes. Excess corbon dioxi de provides drive for respiration ,primarily arterial PCO, would cause all ot the following changes except8 al į PCOa in the cerebrespinad fluid b) v HCO; reabsorption by the Kidney a ↑ plas ma pH ↑ HCO; transport out of the cerebrospimal fluid e) fuster ventilution rate ) Alcohol inhibits the productien of ADH A person who has consumed alcohol would have: al J urine outp.t, blood osmolarity A Turine output bloed osmolarity is primary…
Describe the mechanical events of the cardiac cycle. (use terms like atrial systole, atrial diastole, ventricular diastole, ventricular systole, isovolumic ventricular contraction, isovolumic ventricular relaxation, ventricular ejection, period of rapid filling)

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