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Related Concept Videos

The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
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...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...

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Related Experiment Video

Updated: Jun 26, 2026

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics
09:43

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics

Published on: March 1, 2022

Bone and metabolism: a complex crosstalk.

Liesbet Lieben1, Filip Callewaert, Roger Bouillon

  • 1Laboratory for Experimental Medicine and Endocrinology, Department of Experimental Medicine, Katholieke Universiteit Leuven, Leuven, Belgium.

Hormone Research
|January 21, 2009
PubMed
Summary
This summary is machine-generated.

Bone influences metabolism, challenging previous views. The skeleton acts as an endocrine tissue, regulating glucose metabolism and fat mass through osteocalcin, a key bone-derived factor.

More Related Videos

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
07:17

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation

Published on: April 14, 2016

Related Experiment Videos

Last Updated: Jun 26, 2026

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics
09:43

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics

Published on: March 1, 2022

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
07:17

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation

Published on: April 14, 2016

Area of Science:

  • Endocrinology
  • Metabolism
  • Bone Biology

Background:

  • Previously, metabolic regulation of bone was thought to be unidirectional.
  • Adipocyte-derived leptin and the nervous system were known mediators.
  • Recent research reveals a bidirectional communication pathway.

Purpose of the Study:

  • To investigate the role of bone in regulating energy metabolism.
  • To explore the skeletal contribution to metabolic homeostasis.
  • To understand the endocrine function of bone tissue.

Main Methods:

  • Studies utilized animal models to explore bone-metabolism interactions.
  • Investigated the effects of osteoblast-derived factors on metabolic parameters.
  • Examined the role of the uncarboxylated form of osteocalcin.

Main Results:

  • Bone was found to regulate glucose metabolism and fat mass.
  • The uncarboxylated form of osteocalcin mediates these effects.
  • The skeleton functions as an endocrine organ influencing metabolic homeostasis.

Conclusions:

  • The skeleton plays a crucial role in regulating metabolic homeostasis.
  • Bidirectional communication between bone and metabolism is established.
  • Further research is needed to elucidate human physiological roles and disease implications.