Which of the following occurs during heightened iron needs?
a. genes of the gi tract produce more proteins that assist with iron absorption
b. more iron is absorbed from the foods we consume
c. our body absorbs iron at a slower rate but more efficiently
d. a and b

Produced by the catalyzes the formation of angiotensin i which is not as potent as that preferentially acts on the arteriole. a. angiotensinogen, liver, vasoconstrictor, ang ii, efferent b. anp, right atrium, vasodilator, nitric oxide, afferent c. renin, kidney, vasoconstrictor, ang ii, efferent d. ace, lungs, vasoconstrictor, thromboxane, afferent e. two of the choices