ANATOMY

Detailed explanation-1: -Your pineal gland, also called the pineal body or epiphysis cerebri, is a tiny gland in your brain that’s located beneath the back part of the corpus callosum. It’s a part of your endocrine system and secretes the hormone melatonin.

Detailed explanation-2: -What does the pineal gland do? The pineal gland is best known for the secretion of the hormone melatonin, which is released into the blood and possibly also into the brain fluid, known as cerebrospinal fluid.

Detailed explanation-3: -Melatonin is the only known hormone synthesized by the pineal gland and is released in response to darkness hence the name, “hormone of darkness” [10].

Detailed explanation-4: -Synthesis of melatonin-the role of light In humans melatonin is produced mainly in the pineal gland and a small portion in the retina.

Detailed explanation-5: -The pineal gland was once dubbed the “third eye, ” which originated for many reasons, ranging from its location deep in the center of the brain to its connection to light. Also, the French philosopher and mathematician René Descartes was fascinated with the pineal gland.