Neco 2022 Biology Question 17
Practice objective / multiple choice question 17 from the 2022 Neco Biology examination.
The diagram shows a labelled human heart with the left ventricle (LV), aorta (Ao), systemic arteries (SA) and systemic veins (SV) together with the pressures: LV = \(120\ \text{mmHg}\), Ao = \(115\ \text{mmHg}\), SA = \(100\ \text{mmHg}\), SV = \(5\ \text{mmHg}\). The stroke volume is \(70\ \text{mL}\). Assuming the mean arterial pressure is approximated by the pressure in the systemic arteries and the venous pressure by that in the systemic veins, calculate the mechanical work done by the left ventricle in one cardiac cycle. (Use \(1\ \text{mmHg}=133.322\ \text{Pa}\) and \(1\ \text{mL}=1\times10^{-6}\ \text{m}^3\).)
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About This Question
This is Neco 2022 Biology Question 17. It is one of the objective questions from the 2022 Neco Biology examination.
Difficulty level: Medium .
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