A small endocrine gland attached to the roof of the 3rd vertricle of the brain at the midline
What does the pineal gland secrete?
What is melatonin derived from?
What hormone appears to contribute to the setting of the biological clock?
What controlls the body's biological clock?
the suprachiasmatic nucleus of the hypothalamus
As more melatonin is liberated during darkness than in light, it is thought to promote what?
When is more melatonin secreted and when is less melatonin secreted?
more during the night and less during the day
Melatonin is also a potent________ that may provide some protection against dmaging oxygen free radicals.
What does melatonin do to animals during specific seasons?
inhibits reproductive functions
When are melatonin levels highest in humans?
higher in childhood and decine with age into adulthood.
What is thought to be due in part to overproduction of melatonin?
SAD a type of depression that afflicts some people during the winter months
Pineal Gland pg 673