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Related Concept Videos

The Pituitary Gland01:17

The Pituitary Gland

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.
Hormones of the Pituitary Gland01:27

Hormones of the Pituitary Gland

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 Pineal Gland01:02

The Pineal Gland

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...
Hypothalamic-Pituitary Axis01:37

Hypothalamic-Pituitary Axis

The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
Structures of the Endocrine System00:59

Structures of the Endocrine System

The intricate framework of the endocrine system encompasses a diverse array of glands, with their target tissues and organs strategically distributed throughout the body. Central to this network are the endocrine glands, specialized structures that lack ducts and release hormones directly into the interstitial fluid. Notably, the hypothalamus, a vital neuroendocrine organ situated in the brain, governs neural functions and serves as a potent source of hormonal regulation. Near the hypothalamus...
The Parathyroid Glands00:59

The Parathyroid Glands

The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...

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Related Experiment Video

Updated: May 16, 2026

Dissection and Coronal Slice Preparation of Developing Mouse Pituitary Gland
06:53

Dissection and Coronal Slice Preparation of Developing Mouse Pituitary Gland

Published on: November 16, 2017

Pituitary gland development: an update.

Rodrigo E Bancalari1, Louise C Gregory, Mark J McCabe

  • 1Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, University College London-Institute of Child Health, London, UK.

Endocrine Development
|November 28, 2012
PubMed
Summary
This summary is machine-generated.

Genetic mutations during embryonic pituitary development cause congenital hypopituitarism and midline defects. This review explores key genetic factors and their impact on pituitary development and associated disorders.

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Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Area of Science:

  • Developmental Biology
  • Genetics
  • Endocrinology

Background:

  • Pituitary gland development is a complex process regulated by signaling molecules and transcription factors.
  • Genetic mutations in these factors can lead to congenital hypopituitarism and craniofacial/midline defects.
  • Phenotypic overlap exists between hypopituitarism and disorders like Kallmann syndrome, suggesting shared genetic pathways.

Purpose of the Study:

  • To review the cascade of events in embryonic pituitary gland development.
  • To identify key genetic variations leading to congenital hypopituitarism.
  • To highlight associated craniofacial and midline defects.

Main Methods:

  • Literature review of embryonic pituitary development.
  • Analysis of genetic factors involved in pituitary organogenesis.
  • Examination of genotype-phenotype correlations in congenital hypopituitarism and related disorders.

Main Results:

  • Detailed description of the spatio-temporal regulation of pituitary development.
  • Identification of critical genes and signaling pathways implicated in pituitary formation.
  • Association of specific genetic variations with phenotypes ranging from holoprosencephaly to septo-optic dysplasia.

Conclusions:

  • Congenital hypopituitarism arises from disruptions in the intricate genetic network governing pituitary development.
  • Understanding these genetic underpinnings is crucial for diagnosing and managing associated developmental defects.
  • Further research into these genetic overlaps can elucidate complex developmental pathways.