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Questions and Answers
Which layer of a blood vessel contains concentric layers of smooth muscle cells?
Which layer of a blood vessel contains concentric layers of smooth muscle cells?
- Capillaries
- Tunica externa
- Tunica media (correct)
- Tunica intima
Which type of blood vessel has the thickest walls compared to veins of similar size?
Which type of blood vessel has the thickest walls compared to veins of similar size?
- Capillaries
- Veins
- Venules
- Arteries (correct)
What is the primary site of systemic vascular resistance?
What is the primary site of systemic vascular resistance?
- Arteries (correct)
- Capillaries
- Venules
- Veins
What substances do endothelial cells secrete that can modulate contraction of smooth muscle cells?
What substances do endothelial cells secrete that can modulate contraction of smooth muscle cells?
What is the function of healthy arterial endothelial cells?
What is the function of healthy arterial endothelial cells?
What are the primary capabilities of smooth muscle cells within the medial layer of normal muscular arteries?
What are the primary capabilities of smooth muscle cells within the medial layer of normal muscular arteries?
What happens to the walls of large arteries when blood pressure is sustained over time?
What happens to the walls of large arteries when blood pressure is sustained over time?
What is the result of sustained high arterial pressure causing a progressive increase in vascular radius?
What is the result of sustained high arterial pressure causing a progressive increase in vascular radius?
What is the main function of elastic fibers in the large arteries?
What is the main function of elastic fibers in the large arteries?
Where is blood flow velocity highest in the cardiovascular system?
Where is blood flow velocity highest in the cardiovascular system?
Which of the following is NOT a function of slow blood velocity in capillaries?
Which of the following is NOT a function of slow blood velocity in capillaries?
What is the effect of laminar flow and high velocity in large arteries?
What is the effect of laminar flow and high velocity in large arteries?
What is the role of nitric oxide (NO) in blood vessels?
What is the role of nitric oxide (NO) in blood vessels?
In turbulent flow, what happens to endothelial shear stress and nitric oxide production?
In turbulent flow, what happens to endothelial shear stress and nitric oxide production?
What is the effect of elevated shear stress on endothelial cells?
What is the effect of elevated shear stress on endothelial cells?
Which type of stroke is common from middle cerebral arteries (MCA)?
Which type of stroke is common from middle cerebral arteries (MCA)?
What is the relationship between flow velocity and shear stress?
What is the relationship between flow velocity and shear stress?
What is the function of hydrostatic pressure on the vessel wall?
What is the function of hydrostatic pressure on the vessel wall?
What is the most important function of endothelial cells and smooth muscle layers in blood vessels?
What is the most important function of endothelial cells and smooth muscle layers in blood vessels?
What is a hallmark of endothelial dysfunction that accompanies atherosclerosis?
What is a hallmark of endothelial dysfunction that accompanies atherosclerosis?
Which vessel carries oxygenated blood from the lungs to the left atrium?
Which vessel carries oxygenated blood from the lungs to the left atrium?
What is the primary goal of the pulmonary circulation?
What is the primary goal of the pulmonary circulation?
Which statement about the pulmonary circulation is correct?
Which statement about the pulmonary circulation is correct?
Which system carries metabolic waste products from the tissues to their point of elimination?
Which system carries metabolic waste products from the tissues to their point of elimination?
What is the role of the immune system components in circulation?
What is the role of the immune system components in circulation?
Which vessel receives output from the left ventricle and branches into numerous parallel vascular circuits?
Which vessel receives output from the left ventricle and branches into numerous parallel vascular circuits?
What is the purpose of the redistribution of blood flow during exercise?
What is the purpose of the redistribution of blood flow during exercise?
Which statement about pressure and vascular resistance in the pulmonary circulation is correct?
Which statement about pressure and vascular resistance in the pulmonary circulation is correct?
Which statement about cardiac output is correct?
Which statement about cardiac output is correct?
Which organs receive similar blood flow under both exercise and rest conditions?
Which organs receive similar blood flow under both exercise and rest conditions?
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