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5 Cards in this Set
- Front
- Back
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What happens moving from a supine to a standing position?
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There is an acute fall in arterial blood pressure that is sensed by arterial baroreceptors located in the carotid sinuses and aortic arch.
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If a person has been exercising for 1 hour, which organs experience the smallest decrease in blood flow?
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The brain and heart are the 2 organs that maintain their blood flow.
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What is the relationship between exercise and adenosine?
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The increase in local metabolism during exercise causes cells to release vasodilator substances such as adenosine. This increases arteriolar diameter, vascular conductance and blood flow to skeletal muscles.
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What occurs when there is an increase in sympathetic activity to peripheral vessels?
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There is an increase in total peripheral resistance. Increase in renal sympathetic nerve activity results in an increase in renin release(plasma renin activity) and a decrease in renal blood flow.
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Which specific cardiac conditions are heard in either systole or diastole.
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Mitral regurg/aortic stenosis/ventricular septal defect murmur are heard in systole.
Tricuspid valve stenosis/PDA are usually heard during diastole. PDA can occasionally be heard during systole. |
