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10 Cards in this Set
- Front
- Back
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What is dead space?
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not involved in gas exchange. Ventilated but not perfused.
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Where are barorecptors located?
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the walls of carotid arteries (travel w cranial nevrve 10) and the aorta travel with 9th cranial nerve)
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What do baroreceptors regulate?
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Arterial blood pressure
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What happens when arterial BP decreases?
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Baroreceptors signal to the vasomotor and cardiac centers of the medulla decrease.
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When the medulla gets decreased signals from the baroreceptors how does it respond?
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Increases the sympathetic activity to increase4 HR, force of contraction, and arterial/venous constriction.
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When sympathetic activity is increased what happens to CO, SV, and total peripheral resistance?
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Increases
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What is cardiac output?
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total volume of blood discharged from the ventricles in one minute
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CO=
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SV X HR
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Does CO effect BP?
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yes
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What is the average cardiac output?
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5L
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