The hormone epinephrine causes opposite effects in two populations of target cells
because _____. - ✔️✔️each set of target cells has different receptor-transduction
mechanisms
Oxytocin secretion and milk release from the mammary glands of lactating female
mammals are initiated by _____. - ✔️✔️the physical sensation of the baby sucking at
the nipple
In their mechanism of action, a difference between lipid-soluble and water-soluble
hormones is that _____. - ✔️✔️lipid-soluble hormones bind to an intracellular receptor
and this hormone-receptor complex binds to DNA
The counter-regulatory functions of the pancreas refer to the fact that it _____. -
✔️✔️releases one hormone that reduces glucose levels in the blood and another that
increases them
This disorder typically arises prior to puberty and is generally treated by injections of the
hormone missing from the affected individual's bloodstream. - ✔️✔️Type I diabetes
mellitus
Hormones are _____. - ✔️✔️chemical signals between cells, transported in blood or
hemolymph
Which category of signal exerts its effects on target cells by binding to membrane-
bound receptor proteins? - ✔️✔️neurohormones
Different body cells can respond differently to the same peptide hormones because -
✔️✔️a target cell's response is determined by the components of its signal
transduction pathways
.
The anterior and posterior lobes of the pituitary differ in that _____. - ✔️✔️many
anterior pituitary hormones regulate other endocrine glands whereas posterior pituitary
hormones regulate nonendocrine tissues
How does the adrenal gland respond to stress? - ✔️✔️The adrenal medulla secretes
epinephrine and norepinephrine in response to short-term stress.