Final answer:
Kyong's heart rate is likely to increase, stroke volume may initially increase but could potentially decrease, and mean arterial pressure is likely to increase after consuming 10 cups of coffee due to the effects of caffeine as a sympathetic stimulant.
Step-by-step explanation:
After Kyong drinks 10 cups of coffee, several physiological changes can be expected due to the caffeine content, which acts as a stimulant on the cardiovascular system. First, Kyong's heart rate is likely to increase, as caffeine acts as a sympathetic stimulant, causing the release of catecholamines such as epinephrine and norepinephrine. These catecholamines increase the rate and force of heart contractions.
Second, the stroke volume, or the amount of blood ejected by the left ventricle during each contraction, may increase initially due to increased contractility of the heart muscle caused by the catecholamines. However, if the heart rate increases significantly, the time for ventricular filling may decrease, leading to a potential decrease in stroke volume if the heart does not have sufficient time to fill between beats.
Lastly, the mean arterial pressure, which is an average blood pressure in an individual during a single cardiac cycle, is likely to increase as well. This is due to the increase in cardiac output (product of stroke volume and heart rate), as well as potential vasoconstriction effects of caffeine which increases the total peripheral resistance.