Concept explainers
Introduction:
Arteries are the resistance vessels that give oxygenated blood to the organs. Arteries are known for their strong and resilient tissues that can withstand the pressure created by the heart. They are more muscular in nature than veins and able to maintain their round shape even when the vessels are empty. In order to keep the blood flowing in the artery, the heart must pulsate pressure. This is referred to as blood pressure (BP). The high blood pressure can lead to hypertension, and low blood pressure can lead to hypotension. This can be measured by using a sphygmomanometer. The sphygmomanometer is wrapped around the arm to take measurement of the blood pressure, as the brachial artery that passes through the heart is relatively close to the heart.
Want to see the full answer?
Check out a sample textbook solutionChapter 20 Solutions
Anatomy and Physiology
- Describe inter-relationship between blood vessel radius, vascular resistance, blood flow, blood pressure and blood flow velocity.arrow_forwardExplain how nervous and hormonal mechanisms control blood flow.arrow_forwardExplain how a tissue autoregulates local blood flow based on metabolic needs.arrow_forward
- Describe the control processes that regulate blood flow and pressure in tissues, and explain how the activities of the cardiac, vasomotor, and respiratory centers are coordinated to control blood flow through tissues.arrow_forwardName the 3 categories that blood vessels are divided into. Explain each categoryarrow_forwardDefine circulationarrow_forward
- Activation of the vascular endothelium is an important event associated with cardiovascular diseases. Explain why. (minimum 60 words)arrow_forwardDescribe laminar flow and turbulent flow through a tube.What conditions cause turbulent flow of blood?arrow_forwardDescribe the relationship of viscosity to blood flow.arrow_forward
- Describe the control processes that interact to regulate blood flow and pressure in tissues, and explain how the activities of the cardiac, vasomotor, and respiratory centers are coordinated to control blood flow through tissues.arrow_forwardExplain the relationship between cross-sectional areaof blood vessels and the rate of blood flow.arrow_forwardExplain the factors that regulate the volume of blood flow.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning