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Related Concept Videos

Hormones of the Adrenal Glands01:31

Hormones of the Adrenal Glands

Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
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.
Anatomy of the Adrenal Glands01:17

Anatomy of the Adrenal Glands

The adrenal or supra-renal glands, situated above the kidneys and aligned with the twelfth rib, are paired pyramid-shaped structures crucial for the body's stress response. During stress, these glands secrete hormones vital for adaptive physiological reactions.
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct regions...
Gonadal and Placental Hormones01:24

Gonadal and Placental Hormones

The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
Adrenal Gland Disorders01:27

Adrenal Gland Disorders

Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...

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Related Experiment Video

Updated: May 22, 2026

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
04:33

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

The Interplay between Estrogen and Fetal Adrenal Cortex.

Jovana Kaludjerovic1, Wendy E Ward

  • 1Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada M5S 3E2.

Journal of Nutrition and Metabolism
|April 27, 2012
PubMed
Summary

Environmental estrogens may disrupt fetal adrenal development and placental estrogen production. This study examines estrogen

Area of Science:

  • Endocrinology
  • Developmental Biology
  • Reproductive Science

Background:

  • Estrogen, a steroid hormone, is crucial for embryogenesis, cell proliferation, differentiation, organogenesis, parturition timing, and fetal imprinting.
  • Placental estrogen production relies on dehydroepiandrosterone (DHEA) supplied by the fetus, with the fetal adrenal cortex being a primary source.
  • Estrogen also influences fetal adrenal cortex development, creating a feedback loop.

Purpose of the Study:

  • To discuss fetal adrenal gland development.
  • To explain how endogenous estrogen regulates fetal adrenal cortex structure and function.
  • To highlight the potential impact of early-life environmental estrogen exposure on fetal adrenal development and endocrinology.

Main Methods:

  • Literature review and synthesis of existing research on estrogen, DHEA, and fetal adrenal gland development.

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Last Updated: May 22, 2026

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
04:33

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Published on: March 12, 2019

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05:32

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Published on: August 11, 2023

  • Analysis of the interplay between placental estrogen and fetal adrenal cortex.
  • Discussion of potential disruptions caused by environmental estrogens.

    • Main Results:

    • The fetal adrenal cortex supplies a significant portion of DHEA for placental estrogen synthesis.
    • Placental estrogen plays a role in modulating fetal adrenal cortex development.
    • Concerns exist regarding the disruption of this delicate balance by environmental estrogens.

    Conclusions:

    • Early-life exposure to environmental estrogens may interfere with normal fetal adrenal gland development.
    • This disruption could have downstream effects on placental estrogen production and fetal development.
    • Further research is needed to fully understand the implications of environmental estrogen exposure on the developing endocrine system.