The way in which embryonic heart is able to beat without the control of the nervous system.

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Chapter 20, Problem 52TE

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The way in which embryonic heart is able to beat without the control of the nervous system.

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. A common cause of cardiovascular disease is atherosclerosis, the hardening and narrowing of arteries due to a buildup of plaque. For instance, significant narrowing in the coronary arteries, which bring oxygenated blood to the heart, can produce symptoms such as chest pain, dizziness, and breathlessness. A Heart muscle B Coronary artery (supplies blood and oxygen to heart muscle) Healthy heart muscle Blood clot blocks artery Blocked- blood flow Plaque Coronary artery buildup. in artery Dead heart muscle Image by NIH: National Heart, Lung and Blood Institute [Public domain], via Wikimedia Commons The chart provides typical values for blood flow through a coronary artery. Density (blood) 1060 kg/m³ ρ Viscosity (blood) 0.004 Pa*s n Flow rate 0.8 mL/s Length (artery) 3 cm Radius (artery) r 0.18 cm (a) Using Poiseuille's Law, calculate the pressure drop across this artery. (Things to think about: How does the pressure drop calculated in this part compare to mean arterial pressure?) Use 1…