Podcast
Questions and Answers
Which blood vessels have the lowest pressure and vascular resistance?
Which blood vessels have the lowest pressure and vascular resistance?
- Veins
- Pulmonary arteries
- Pulmonary veins (correct)
- Arteries
What is the primary goal of the pulmonary circulation?
What is the primary goal of the pulmonary circulation?
- To carry metabolic waste products from the tissues
- To remove carbon dioxide from the tissues
- To carry oxygen from the lungs to the tissues (correct)
- To carry nutrients from the digestive tract to the tissues
Which blood vessel receives output from the left ventricle?
Which blood vessel receives output from the left ventricle?
- Pulmonary vein
- Pulmonary artery
- Aorta (correct)
- Arteries
What is the purpose of blood flow redistribution during exercise?
What is the purpose of blood flow redistribution during exercise?
Which layer of blood vessels is composed of concentric layers of smooth muscle cells?
Which layer of blood vessels is composed of concentric layers of smooth muscle cells?
Which type of blood vessels have uniquely thin walls composed of only endothelial cells and basement membrane?
Which type of blood vessels have uniquely thin walls composed of only endothelial cells and basement membrane?
What is the primary site of systemic vascular resistance in the circulatory system?
What is the primary site of systemic vascular resistance in the circulatory system?
What is the relationship between wall tension (T), pressure (P), and radius (r) in blood vessels?
What is the relationship between wall tension (T), pressure (P), and radius (r) in blood vessels?
Which of the following is the main factor controlling vascular resistance on a minute-to-minute basis?
Which of the following is the main factor controlling vascular resistance on a minute-to-minute basis?
Which site represents the primary site of vascular resistance maintaining normal blood pressure?
Which site represents the primary site of vascular resistance maintaining normal blood pressure?
Which of the following hormones is responsible for vasoconstriction and increasing blood pressure?
Which of the following hormones is responsible for vasoconstriction and increasing blood pressure?
Which endothelium-derived vasodilator plays a role in maintaining normal blood flow?
Which endothelium-derived vasodilator plays a role in maintaining normal blood flow?
Which mediator is responsible for preventing orthostatic hypotension?
Which mediator is responsible for preventing orthostatic hypotension?
Which mediator is primarily responsible for sodium and blood volume regulation?
Which mediator is primarily responsible for sodium and blood volume regulation?
Which mediator plays a major role in water conservation by the kidneys?
Which mediator plays a major role in water conservation by the kidneys?
Which mediator is released from white blood cells in the process of inflammatory responses?
Which mediator is released from white blood cells in the process of inflammatory responses?
Which hypothesis of autoregulation suggests that decreased pressure and flow result in buildup of vasodilator metabolites that produce vasodilation, while increased pressure and flow wash out vasodilator metabolites, producing vasoconstriction?
Which hypothesis of autoregulation suggests that decreased pressure and flow result in buildup of vasodilator metabolites that produce vasodilation, while increased pressure and flow wash out vasodilator metabolites, producing vasoconstriction?
What is the key regulator of adrenal aldosterone secretion?
What is the key regulator of adrenal aldosterone secretion?
Which receptor is activated by vasopressin (AVP) to cause vasoconstriction?
Which receptor is activated by vasopressin (AVP) to cause vasoconstriction?
Which second messenger is involved in the vasodilation mediated by nitric oxide (NO)?
Which second messenger is involved in the vasodilation mediated by nitric oxide (NO)?
According to the Law of Laplace, which of the following occurs when the arterial wall weakens in response to increased pressure?
According to the Law of Laplace, which of the following occurs when the arterial wall weakens in response to increased pressure?
Which type of blood vessels are less compliant than veins but are subjected to greater pressure changes as they receive the stroke volume of the heart during systole?
Which type of blood vessels are less compliant than veins but are subjected to greater pressure changes as they receive the stroke volume of the heart during systole?
Which blood vessels contain an abundance of elastic fibers that stretch during systole and return to their original shape and size during diastole?
Which blood vessels contain an abundance of elastic fibers that stretch during systole and return to their original shape and size during diastole?
Which of the following is the most important biochemical mediator produced by endothelial cells and smooth muscle layers, promoting vasodilation, maintaining vessel patency, and lowering blood pressure?
Which of the following is the most important biochemical mediator produced by endothelial cells and smooth muscle layers, promoting vasodilation, maintaining vessel patency, and lowering blood pressure?
Which of the following is the most likely cause of the 32-year-old female's fainting spell?
Which of the following is the most likely cause of the 32-year-old female's fainting spell?
Which of the following baroreflex compensatory responses will not occur in response to an acute drop in blood pressure?
Which of the following baroreflex compensatory responses will not occur in response to an acute drop in blood pressure?
Which of the following is a possible cause of primary hypertension?
Which of the following is a possible cause of primary hypertension?
Which of the following is a possible cause of secondary hypertension?
Which of the following is a possible cause of secondary hypertension?
Which of the following hypotheses of origin for hypertension predicts vasoconstriction by generalized autoregulation?
Which of the following hypotheses of origin for hypertension predicts vasoconstriction by generalized autoregulation?
Which of the following hypotheses of origin for hypertension involves increased sympathetic tone and RAAS activity?
Which of the following hypotheses of origin for hypertension involves increased sympathetic tone and RAAS activity?
