Darren is 15 years old, tall for his age, but he wants
to build more muscle. He decides that he will eat
only protein foods, because, he says, “Muscle is
protein, so protein will make protein, and the more
protein, the more muscle.” In part he is correct,
and in part incorrect. Explain, and name the hor-
mones involved in protein metabolism; state how
each affects protein metabolism.
Many people love pasta, others love potatoes, and
still others love rice. Name the hormones involved
in carbohydrate metabolism, and, for each, explain
its specific function.
4. Unfortunately, many fast-food meals are well
over 50% fat. Name the hormones involved in
fat metabolism, and, for each, explain its specific
function.
5. You have read about the liver several times in this
chapter, and often seen its picture as a target organ.
Many functions of the liver are stimulated by hor-
mones. Name as many hormones as you can think
of with effects on the liver, and state the function of
each.
