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Related Concept Videos

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...
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...
The Endocrine System01:29

The Endocrine System

The endocrine system is an extensive network of glands – organs or tissues in the body that create chemicals that control many bodily functions, that secrete hormones, which are chemical messengers that play essential roles in regulating various bodily functions. These hormones are secreted into the bloodstream and travel throughout the body. They require specific receptors to convey signals to cells possessing these corresponding receptors. This complex signaling mechanism ensures that every...
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...
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...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...

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Related Experiment Video

Updated: Jun 12, 2026

Isolation, Fixation, and Immunofluorescence Imaging of Mouse Adrenal Glands
08:37

Isolation, Fixation, and Immunofluorescence Imaging of Mouse Adrenal Glands

Published on: October 2, 2018

Adrenal gland and bone.

Rowan Hardy1, Mark S Cooper

  • 1Institute of Biomedical Research, University of Birmingham, Birmingham B15 2TT, UK.

Archives of Biochemistry and Biophysics
|June 15, 2010
PubMed
Summary
This summary is machine-generated.

Adrenal androgens and cortisol impact bone health. While excess hormones cause bone density loss, physiological levels and aging effects on bone metabolism require further study, especially in women.

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Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
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Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

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Last Updated: Jun 12, 2026

Isolation, Fixation, and Immunofluorescence Imaging of Mouse Adrenal Glands
08:37

Isolation, Fixation, and Immunofluorescence Imaging of Mouse Adrenal Glands

Published on: October 2, 2018

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

Area of Science:

  • Endocrinology
  • Bone Biology
  • Gerontology

Background:

  • The adrenal gland produces cortisol and androgens, crucial for bone metabolism.
  • Dysregulation of these hormones, as seen in Cushing's disease and congenital adrenal hyperplasia (CAH), significantly impacts bone density, growth, and fracture risk.
  • The precise role of physiological glucocorticoid and androgen levels on bone health, particularly with aging, remains less understood.

Purpose of the Study:

  • To explore the influence of physiological levels of adrenal steroids on bone metabolism.
  • To investigate the relationship between aging, cortisol secretion dynamics, and bone density.
  • To assess the effects of restoring age-related reduced adrenal androgen levels on bone health.

Main Methods:

  • Analysis of cortisol levels in elderly individuals and their correlation with bone density and bone loss.
  • Examination of age-related changes in cortisol secretion.
  • Review of studies investigating the impact of adrenal androgen level restoration on bone health in different age groups and sexes.

Main Results:

  • Higher cortisol levels in the elderly correlate with lower bone density and accelerated bone loss.
  • Cortisol can be locally synthesized within bone tissue, with increased production in osteoblasts with age.
  • Restoring age-reduced adrenal androgen levels shows modest benefits for bone health, primarily in women.

Conclusions:

  • Adrenal steroids, including cortisol and androgens, play a complex role in bone health throughout the lifespan.
  • Aging influences both adrenal hormone levels and their local metabolism within bone, impacting bone physiology.
  • Targeted interventions, such as androgen level restoration, may offer benefits for bone health, particularly in postmenopausal women.