Can you imagine the tiny, pea-sized pineal gland in your body can hold immense power? Well, it can!
Situated between the 2 hemispheres of brain, this endocrine gland is associated with controlling the human body’s biological rhythms. It is composed of the lobular parenchyma of pinealocytes, which make up the major portion of it. Its primary function is to secrete the sleep hormone called melatonin.
Short note on structure and function of Pineal Gland
Anatomy of the Pineal gland!
Pineal gland develops from the bottom of the diencephalon and is located behind the third cerebral ventricle. In adults, pineal gland weighs about 0.1 gm. and is 0.3 inches long. This gland has adrenergic nerves which influence its function. A significant portion of this gland is composed of pinealocytes and astrocytes.
Although this pineal gland exists in most vertebrates, there are certain exceptions like hagfish. Another existing relative to vertebrates lacking a pineal gland is lancelet Branchiostoma lanceolatum.