The Pineal Gland is a gland that is part of the Endocrine system.
It is located near the center of the Brain and its shape is similar to a Pine Cone. The Pineal Gland is also referred to as the Epiphysis or Pineal Body
This is a very small gland whose main purpose is the production of Melatonin. Melatonin is a hormone that affects the sleep and wake patterns. The release of Melatonin is attributed to darkness while light causes melatonin production to decrease.
The Structure Development of this gland – It is much larger while in adolescents and prior to puberty. It’s size decreases somewhat into adulthood.
– This gland is the only structure that is actually mid-line in the brain.
– The gland is typically a reddish-gray
– It is the size of a grain of rice in humans.
– It sits between the Thalamic bodies and behind Habenular Commissure and behind the Third Ventricle.
Blood Brain Barrier System
– This gland is not isolated from the body by the blood-brain barrier
– It has a large amount of blood flow from the choroidal branches of the posterior cerebral artery.
– The following is cellular structure of the pineal gland.