Physiology 2130 Chapter Notes - Chapter 9: Vasodilation, Histamine, Aorta
25 Dec 2016
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Describe and explain the general organization and anatomy of the cardiovascular system, including the heart and blood vessels. Describe the blood volume distribution within the different blood vessels and explain the significance of the different volumes. Describe and explain the relationship between pressure, flow, and resistance. Describe the changes to pressure and resistance throughout the circulatory system and explain why pressure and resistance are different in different vascular beds. Pressure gradient: force that moves blood through circulatory system. Causes blood to flow through pulmonary and systemic circulation. Aterioles: largest drop in blood pressure occurs here. Explain what would happen to blood pressure above and below a constriction. Overall: blood flow is decreased as radius is decreased, although pressure gradient is increased, flow = delta(p)r^4, decrease in radius has larger effect on flow than the increased pressure gradient. Calculate total peripheral resistance (tpr) in an individual and explain what would happen to blood pressure if the tpr changed.
