Physiology Semester I- Integrated Responses of the Respiratory System

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1

what is ventilation's rise during exercise due to

increased consumption of O2 and increased productin of CO2

2

what happens in exercise in health with O2 consumption, CO2 productino, and ventilation

ventilation matches these things in mild to moderate exercise

3

how do ventilation and metabolism link

ventilation incrased match metabolism incrases, allowing arterial PO2 and PCO2 to remain unchanged

4

is teh rise in O2 consumption and CO2 production in people with heart or lung diseas the same as in healthy persons at the same level of work

yes

5

what will work be limited by in a person with symptomatic heart disease

cardiac or CV symptom at low ventilation

6

what will work be limited by in lung disease patients

respiratory symptoms at low HR

7

what is erythropoeitin

hormone formed in fibroblast like cells in renal cortex

8

what is the action of EPO in bone marrow

stimulates production of proerythroblasts and development of red cells from progenitor cells

9

what is the stimulus for EPO synthesis

decrases in local tissue PO2 in renal cortex through:

anemia

decraseing renal blood flow

declining systemic arterial PO2

conditinos that result in incrased affinity of Hb for O2

10

do males or females have hi8ger hematocrit

males