Related Experiment Video
Updated: Apr 28, 2026

07:59
Tracking Cells in GFP-transgenic Zebrafish Using the Photoconvertible PSmOrange System
Published on: February 5, 2016
8.1K
Pineal research: the decade of transformation
Summary
The pineal gland, once thought functionless, was revealed as an active neuroendocrine transducer between 1954 and 1965. Key discoveries in melatonin and pineal gland structure paved the way for modern understanding.
Area of Science:
- Neuroendocrinology
- Pineal Gland Research
Background:
- Early research considered the pineal gland a vestigial organ.
- The mid-20th century marked a paradigm shift in understanding its function.
Observation:
- Kitay and Altschule's 1954 book provided foundational knowledge.
- Lerner's 1958 isolation and structural elucidation of melatonin were critical.
Findings:
- Between 1954 and 1965, the pineal gland was established as a neuroendocrine transducer.
- Subsequent research detailed the gland's structure and physiological roles.
Implications:
- This period laid the groundwork for modern pineal science.
- The pineal gland's role in neuroendocrine regulation is now well-established.
Related Concept Videos
The Pituitary Gland
13.0K
The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
13.0K
Hormones of the Pituitary Gland
14.2K
The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...
14.2K
The Pineal Gland
7.9K
The pineal gland, a diminutive endocrine structure named for its pinecone-shaped appearance, is situated atop the third ventricle within the diencephalon region of the forebrain. This gland, composed of secretory cells known as pinealocytes arranged in compact cords and clusters around dense particles of calcium salts, plays a pivotal role in hormonal regulation.
The primary secretion of the pineal gland is the hormone melatonin, derived from serotonin. The concentration of melatonin in the...
The primary secretion of the pineal gland is the hormone melatonin, derived from serotonin. The concentration of melatonin in the...
7.9K
Major Hormones and Their Functions
3.7K
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
3.7K

