Question

A patient comes into the clinic with a resting heart rate of 80 beats per minute (bpm). The patient's cardiac output was found to be 5.6 liters/minute with an ejection fraction (EF) of 70%. What is the patient's end-systolic volume (ESV in ml)?
a) 30 ml
b)70 ml
c)80 ml
Under an electron microscope, the different sarcomere bands of striated muscle can be visualized (I-band, A-band, H-band, and Z-disk) in the relaxed state, after passive stretch, and after contraction. Which sequence of manipulations will lead to increasing A-band width?
a) passive stretch, contracted, relaxed
b)passive stretch, relaxed, contracted
c) none of the above

Answer 1

The correct answer for the question that is being presented above is this one: "b)70 ml." the patient's end-systolic volume (ESV in ml) is b)70 ml.

The correct answer for the question that is being presented above is this one: "a) passive stretch, contracted, relaxed." The sequence of manipulations will lead to increasing A-band width is that passive stretch, contracted, relaxed.