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Related Concept Videos

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...
Bone Remodeling and Repair01:31

Bone Remodeling and Repair

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...
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...
The Functions of the Skeletal System01:22

The Functions of the Skeletal System

The most apparent functions of the skeletal system are support, protection, and movement. However, bone tissue also performs several other critical metabolic functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium and phosphorus. These minerals, present in the bone tissue, can be released back into the bloodstream when required. Calcium ions, for example, are essential for muscle contractions and controlling...
Bone Structure01:55

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
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.

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Related Experiment Video

Updated: May 8, 2026

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

Muscle-bone interactions: basic and clinical aspects.

Luisella Cianferotti1, Maria Luisa Brandi

  • 1Unit of Bone and Mineral Metabolism, Department of Surgery and Translational Medicine, Section of Endocrinology and Metabolism, School of Human Health Sciences, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy.

Endocrine
|August 31, 2013
PubMed
Summary
This summary is machine-generated.

Skeletal muscle and bone are interconnected, influencing each other

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Last Updated: May 8, 2026

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
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Area of Science:

  • Musculoskeletal biology
  • Endocrinology
  • Mechanobiology

Background:

  • Skeletal muscle and bone share close anatomical and functional connections.
  • The mechanostat theory highlights striated muscle's role in bone development and maintenance.
  • Both tissues function as endocrine organs, secreting factors that influence biological functions.

Purpose of the Study:

  • To explore the bidirectional communication between skeletal muscle and bone.
  • To investigate the role of paracrine interactions in musculoskeletal healing.
  • To examine how muscle and bone influence each other's metabolism.

Main Methods:

  • In vitro studies
  • Rodent models
  • Analysis of clinical observations

Main Results:

  • Skeletal muscle significantly influences bone metabolism and quality.
  • Evidence suggests bone tissue can modulate skeletal muscle metabolism.
  • Paracrine interactions at the periosteal interface are hypothesized.

Conclusions:

  • Muscle and bone engage in complex crosstalk, impacting each other's function and health.
  • These interactions are crucial for musculoskeletal healing and overall tissue homeostasis.
  • Further in vivo studies in humans are warranted to fully elucidate this crosstalk.