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Where does filtration occur?

In a simulation, you discovered that increasing blood vessel radius increases flow rate through that vessel. You also learned that the body increases blood vessel radius by relaxing vascular smooth muscle. How does the body cause relaxation of most vascular smooth muscle?

The process whereby fluid in the kidneys is transported from the tubules back into the bloodstream is called

In which of the following situations will hemoglobin bind to oxygen most tightly?

If a blood vessel’s radius decreases to half its original value, what happens to resistance through that vessel? R α Lη/r4 R=resistance L=length η=viscosity r=radius

Flow of air

What triggers erythropoietin release?

If the amount of solute excreted per minute is greater than the filtered load, then the NET effect on the solute is _____. Excretion = Filtration – Reabsorption + Secretion

Stretch-sensitive mechanoreceptors known as ________ are located in some artery walls.

What substance reduces surface tension in alveoli?