### process | secretion | hormone:

Human growth hormone
* play roles
* provide benefits

Juvenile hormone
* Most juvenile hormones are secreted by glands.
* is secreted by two tiny glands behind the brain, the corpora allata.
* restores larval pattern of sericotropin gene transcripts.
* stimulates fat bodies to synthesize and export vitellogens, or yolk proteins.
* suppress the development of adult structures.
* tells the insect to remain in the immature state.

### process | secretion | hormone:

Male hormone
* Most male hormone comes from the testicles in the form of testosterone.
* are an important factor in balding
  - far more effective than female ones, even in women
  - responsible for much more than the desire and capability to breed mares
* can actually help the prostate cancer grow
  - cause structural changes in the upper airway
* decline gradually.
* diminish with age.
* have the opposite effect.
* play a role in prostate cancer.
* promote the growth and spread of the cancer.
* stimulate the production of keratin and selubum, which leads to clogged pores
  - prostate gland to develop in the fetus

### process | secretion | hormone:

Melatonin
* Most melatonin has effects
  - properties
* Most melatonin is produced by glands
  - pineal glands
  - produces in pituitary glands
* Some melatonin acts as hormones.
* Some melatonin has functions
* Some melatonin helps cellular metabolism
* Some melatonin is synthesized in glands
  - retinas
  - vertebrate retinas
  - reduces anxiety
  - serves functions
* acts on receptors
  - specific receptors
* decreases cell proliferation and transformation in a melatonin receptor-dependent manner.
* facilitates synchronization of sparrow circadian rhythms to light.
* promotes protection.

Natural hormone
* Some natural hormones are produced by cows.
* are available in health food stores
  - extremely potent and operate at minute concentrations in the body
  - simply an alternative to hormone replacement therapy
* tend to be made from soy and yam products.

Ovarian hormone
* act early in development to feminize open field behavior in the rat.
* give a warm, cozy, connected feeling.
* influence territorial aggression in free-living mountain spiny lizards.

Oxytocin
* Most oxytocins have effects.
* Some oxytocins are produced by anterior glands
  - pituitary glands
  - cause contraction
  - have roles
  - stimulate contraction
* are drugs
  - peptides
* governs the milk-ejection reflex, among other things.
* secrete from glands
* stimulates contraction of the uterus during childbirth
  - uterine smooth muscle
  - milk ejection in marsupials as in eutherian mammals

Parathormone
* causes resorption of calcium from the bones, which act as a giant calcium warehouse.
* reduces reabsorption, ie more lost in urine.
* regulates the calcium level in the blood.

Parathyroid hormone
* Most parathyroid hormones are made by glands
  - parathyroid glands
* Most parathyroid hormones are secreted by glands
  - regulate levels
* Some parathyroid hormones act on bones.
* increase levels.

Pituitary hormone
* Most pituitary hormones have roles.
* Most pituitary hormones regulate excretion
  - water excretion
* Most pituitary hormones stimulate glands
* Some pituitary hormones stimulate gonads.

Placental hormone
* Most placental hormones act on receptors.
* Some placental hormones are physiologically very similar to pituitary hormones.