Endocrine Glands & Their Hormones (Pituitary Gland (This gland is…
Endocrine Glands & Their Hormones
binds to liver cells, signaling them to convert glycogen to glucose and release the glucose into the blood.
:Insulin signals body cells, especially liver and muscle cells, to accelerate the conversion of glucose to glycogen, which is stored in the liver.
Outer portion (cortex)
manufactures the steroid hormone aldosterone and a group of hormones called glucocorticoids.
Aldosterone primarily affects the kidneys and is important for reabsorbing sodium.
Cortisol, another glucocorticoid, raises blood glucose levels and also reduces inflammation.
secrete epinephrine (adrenaline) and norepinephrine. these hormones increase heart rate, blood pressure, breathing rate, and blood sugar levels, all of which are important in increasing the activity of body cells.
thyroxine does not act on specific organs;
rather, it causes cells of the body to have a higher rate of metabolism.
is a hormone that is partly responsible for the regulation of calcium, an important mineral for bone formation, blood clotting, nerve function, and muscle contraction.
Calcitonin lowers blood calcium levels by signaling bones to increase calcium absorption and also signaling the kidneys to excrete more calcium
Parathyroid hormone increases blood calcium levels by stimulating the bones to release calcium
The action of this hormone also causes the kidneys to reabsorb more calcium and the intestines to absorb more calcium from food.
This gland is sometimes called the “master gland” because it regulates so many body functions.
The pituitary gland secretes hormones that not only regulate many body functions but also regulates other endocrine glands.
A few pituitary hormones act on tissues rather than on specific
Human growth hormone (hGH) regulates the body’s physical
growth by stimulating cell division in muscle and bone tissue.
manufactures and secretes hormones that regulate the testes, the ovaries, and the thyroid and adrenal glands.