After reading the paragraphs below, answer the questions that follow.
To evaluate cardiac function, scientists and physicians measure both the pressure and the volume inside the heart. When both pressure and volume data are plotted on the same graph, the resulting graph is called a pressure-volume loop. To create a pressure-volume loop, a catheter (a thin tube) is inserted into the vessels of the heart, and measurements of both left ventricular pressure and left ventricular volume are taken. The data are plotted on a graph, and cardiac function can then be evaluated from the distribution of the data and the shape of the loop.
The following figure shows a typical left ventricle pressure-volume loop for a healthy young adult. The cardiac cycle proceeds counterclockwise. Each complete turn around the loop (for example, starting at point A and ending back at point A) represents one complete cardiac cycle.
How much blood is ejected from the left ventricle during one contraction?
◦ 70 mL
◦ 35 mL
◦ 135 mL
◦ 65 mL
Cardiac circulation
Part C - Structure and function of the human brain
For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ...
Answer
Intraaortic balloon pump. The balloon deflates during systole, so cardiac output is unimpeded.
Effects of disrupted growth hormone function