The pineal gland (also known as the pineal body [1] or epiphysis cerebri) is a small endocrine gland in the brain of most vertebrates. It produces melatonin, a serotonin-derived hormone, which modulates sleep patterns following the diurnal cycles. [2] The shape of the gland resembles a pine cone, which gives it its name. [3]

2022年6月22日 · 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.

2025年1月16日 · The pineal gland is an endocrine gland located in the epithalamus, near the center of the human brain. As it is one of the endocrine glands it secretes its product, the hormone called melatonin, directly into the blood.

2025年1月10日 · The pineal gland is small glandular body, approximately 6mm long. It is shaped like a pine cone, from which its name is derived. There are two types of cells present within the gland: Pinealocytes – hormone secreting cells. Glial cells – supporting cells.

2024年8月7日 · The pineal gland is often described as shaped like a pine cone. It is small, about 5-9mm long and 1-5mm wide, and reddish-grey. The cells that make up the pineal gland tissue in humans and other mammals include hormone-producing pinealocytes and …

2024年10月20日 · The pineal gland is a small unpaired pine-cone shaped endocrine organ considered to be part of the epithalamus. It is situated in the midline anterior to the quadrigeminal cistern and secrete melatonin hence regulates the circadian cycle.

The identification of the pineal gland as a distinct organ is attributed to Galen of Pergamon (130–200 B.C.). He first described the organ as being part of the brain, characterizing it as a gland and calling it konareion, or conarium in latin, because of its shape [1, 2].

2025年2月4日 · Its name is derived from its shape, which is similar to that of a pinecone (Latin pinea). In adult humans it is about 0.8 cm (0.3 inch) long and weighs approximately 0.1 gram (0.004 ounce). The pineal gland has a rich supply of adrenergic nerves (neurons sensitive to the adrenal hormone epinephrine) that greatly influence its function.

2024年9月26日 · The pineal gland is a small, pea-shaped endocrine gland located in the brain, responsible for producing the hormone melatonin, which regulates sleep-wake cycles and circadian rhythms. It responds to light exposure, influencing …

2023年8月3日 · The pineal gland is a tiny pine cone-shaped gland that hangs from the roof of the third ventricle of the brain. The size of the pineal gland in vertebrates is associated with the environment, and geographical locations as the glands tend to be larger in the vertebrates living in harsh environments.