GENERAL HISTOLOGY

Detailed explanation-1: -The pineal gland, conarium, or epiphysis cerebri, is a small endocrine gland in the brain of most vertebrates. The pineal gland produces melatonin, a serotonin-derived hormone which modulates sleep patterns in both circadian and seasonal cycles. The shape of the gland resembles a pine cone, which gives it its name.

Detailed explanation-2: -The pineal gland is located in the dorsal diencephalon, and it contains both rod and cone photoreceptor cells [4–6].

Detailed explanation-3: -Functions Of Pineal Gland This gland secretes the hormone melatonin which regulates the circadian rhythm of the body and also certain reproductive hormones. The secretion of this hormone depends upon the amount of light a person is exposed to. This hormone is produced in large amounts when it is dark.