Question 7 2 pts Which of the following would not increase stroke volume? Increa
ID: 3515189 • Letter: Q
Question
Question 7 2 pts Which of the following would not increase stroke volume? Increased sympathetic action on the heart Increased preload Increased contractility Physiological cardiac hypertrophy Pathological cardiac hypertrophy D Question 8 2 pts According to the Frank-Starling mechanism of the heart: the left ventricle ejects a larger volume of blood with each systole than the right ventricle. the intrinsic rate of the heart's pacemaker is 100 beats/min. cardiac output increases with increased heart rate. stroke volume increases with increased venous return both ventricles contract simultaneously.Explanation / Answer
Q 7 pathological cardiac hypertrophy will not increase the stroke volume because due to pathological hypertrophy ventricular muscle wall thickness increased very much that compromise the ventricular volume that will becomes decreased so stroke volume will be deceased. So net effect is congestive heart failure.
In other all option due to sympathetic sytem increase contractile power via beta receptor and high heart rate.
Increased preload will increase end diastolic volume so high stroke volume
In physiological hypertrophy...up to physiological level end diastolic volume not compromised by wall thickness so stoke volume maintained.
Q 8 according to frank starling law stroke volume will increase with increase venous return.
He states more is the streaching more the tension develop and more powerfull will be the ventricle contracts lea to high stroke volume.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.