Podcast
Questions and Answers
What is the primary response of vascular smooth muscle when systemic arterial pressure increases?
What is the primary response of vascular smooth muscle when systemic arterial pressure increases?
- Vasodilation
- Vasoconstriction (correct)
- Vasospasm
- Platelet adhesion
Which of the following is an intrinsic regulator of blood flow by endothelial factors?
Which of the following is an intrinsic regulator of blood flow by endothelial factors?
- Angiotensin II
- ADH
- Prostacyclin (correct)
- Nitric Oxide
What happens if endothelial cells are damaged?
What happens if endothelial cells are damaged?
- Prostacyclin increases
- Vasoconstriction reduces
- Nitric Oxide decreases (correct)
- Endothelin decreases
How does cold application affect blood flow?
How does cold application affect blood flow?
Which factor is NOT involved in neural and hormonal regulation of blood flow?
Which factor is NOT involved in neural and hormonal regulation of blood flow?
What is the main effect of heat application on blood flow?
What is the main effect of heat application on blood flow?
What is the term for the accumulation of blood in response to blocked veins, leading to a transient increase in blood flow upon removal of the blockage?
What is the term for the accumulation of blood in response to blocked veins, leading to a transient increase in blood flow upon removal of the blockage?
Which specialized mechanism is responsible for neuron-dependent hemodynamic response in the brain and release of NO in penile tissue during hyperemia?
Which specialized mechanism is responsible for neuron-dependent hemodynamic response in the brain and release of NO in penile tissue during hyperemia?
What condition is characterized by vasospasms caused by cold temperatures or strong emotions, leading to discoloration, ischemia, and necrosis of tissue in fingers, toes, ears, and nose?
What condition is characterized by vasospasms caused by cold temperatures or strong emotions, leading to discoloration, ischemia, and necrosis of tissue in fingers, toes, ears, and nose?
Intrinsic regulation to maintain relatively constant blood flow through tissues over a wide range of systemic arterial pressures is primarily carried out by which mechanism?
Intrinsic regulation to maintain relatively constant blood flow through tissues over a wide range of systemic arterial pressures is primarily carried out by which mechanism?
Which type of hyperemia occurs during exercise and results in an increased blood flow to tissue in response to heightened tissue metabolism?
Which type of hyperemia occurs during exercise and results in an increased blood flow to tissue in response to heightened tissue metabolism?
What is the term for the condition where increased blood flow removes waste products and cell debris after a decrease in blood flow due to vasospasms?
What is the term for the condition where increased blood flow removes waste products and cell debris after a decrease in blood flow due to vasospasms?
What is the primary reason for regulating blood flow according to the text?
What is the primary reason for regulating blood flow according to the text?
What is the function of a precapillary sphincter in the capillary bed?
What is the function of a precapillary sphincter in the capillary bed?
Which mechanism allows organs to autoregulate their own blood flow rates?
Which mechanism allows organs to autoregulate their own blood flow rates?
What allows each tissue to control its own local blood flow in proportion to its metabolic needs?
What allows each tissue to control its own local blood flow in proportion to its metabolic needs?
How can blood flow be regulated by actions of the sympathetic nervous system?
How can blood flow be regulated by actions of the sympathetic nervous system?
What effect can vasodilation of metarterioles and relaxation of precapillary sphincters have on blood flow?
What effect can vasodilation of metarterioles and relaxation of precapillary sphincters have on blood flow?
