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Questions and Answers
What is the range of blood pressure that stimulates arterial baroreceptors?
What is the range of blood pressure that stimulates arterial baroreceptors?
- 30-150 mmHg
- 20-80 mmHg
- 60-180 mmHg (correct)
- 100-200 mmHg
What happens to the rate of discharge of arterial baroreceptors when blood pressure exceeds 180 mmHg?
What happens to the rate of discharge of arterial baroreceptors when blood pressure exceeds 180 mmHg?
- It fluctuates
- It remains the same
- It increases rapidly
- It decreases (correct)
What type of impulses do atrial receptors discharge during atrial systole?
What type of impulses do atrial receptors discharge during atrial systole?
- Type C: parasympathetic impulses
- Type B: excitatory impulses
- Type D: sympathetic impulses
- Type A: inhibitory impulses (correct)
What stimulates atrial receptors located in the wall of both atria?
What stimulates atrial receptors located in the wall of both atria?
What is the function of arterial baroreceptors during rest?
What is the function of arterial baroreceptors during rest?
How do atrial receptors regulate central venous pressure when volume receptors increase?
How do atrial receptors regulate central venous pressure when volume receptors increase?
Which area of the medullary cardiovascular centres is responsible for vasoconstriction, leading to an increase in arterial blood pressure?
Which area of the medullary cardiovascular centres is responsible for vasoconstriction, leading to an increase in arterial blood pressure?
What effect does the stimulation of the Cardiac Stimulatory Centre have on arterial blood pressure?
What effect does the stimulation of the Cardiac Stimulatory Centre have on arterial blood pressure?
Which mechanism acts through the kidneys to regulate arterial blood pressure?
Which mechanism acts through the kidneys to regulate arterial blood pressure?
Which centre sends inhibitory impulses to the Vasoconstrictor Centre to counteract vasoconstriction?
Which centre sends inhibitory impulses to the Vasoconstrictor Centre to counteract vasoconstriction?
What is the main function of the Cardiac Inhibitory Centre in the medullary cardiovascular centres?
What is the main function of the Cardiac Inhibitory Centre in the medullary cardiovascular centres?
What effect does Venoconstriction have on arterial blood pressure?
What effect does Venoconstriction have on arterial blood pressure?
What is the mechanism of the Bainbridge reflex?
What is the mechanism of the Bainbridge reflex?
What is the effect of inhibition of secretion of ADH and aldosterone on Na+ excretion?
What is the effect of inhibition of secretion of ADH and aldosterone on Na+ excretion?
How does increased right atrial pressure affect heart rate through the Bainbridge effect?
How does increased right atrial pressure affect heart rate through the Bainbridge effect?
What is the function of peripheral chemoreceptors in response to stimuli like hypoxia?
What is the function of peripheral chemoreceptors in response to stimuli like hypoxia?
How does distension of the left ventricle affect heart rate through baroreceptors?
How does distension of the left ventricle affect heart rate through baroreceptors?
How does inhibition of aldosterone secretion affect blood volume and arterial blood pressure?
How does inhibition of aldosterone secretion affect blood volume and arterial blood pressure?
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