Which is not a major role of the Respiratory System during exercise:
1) Maintain arterial oxygen levels
2) Eliminate carbon dioxide
3) Assist with buffering of metabolic acids
4) Maintain cardiac output

Minute vessels that collect blood from the capillaries and join to form veins are: venoles venules viscera venoids

In which book word demography is used for first time

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.