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Related Concept Videos

Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
Development of the Limb Synovial Joints01:07

Development of the Limb Synovial Joints

Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...

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Related Experiment Video

Updated: May 29, 2026

Culturing and Measuring Fetal and Newborn Murine Long Bones
06:58

Culturing and Measuring Fetal and Newborn Murine Long Bones

Published on: April 26, 2019

Methods to study cartilage and bone development.

Anenisia C Andrade, Dionisios Chrysis, Laura Audi

    Endocrine Development
    |August 26, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Investigating linear growth requires advanced techniques. This study details methods like microdissection and cell cultures to understand bone growth and remodeling for treating metabolic bone disorders.

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    Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
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    Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification

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    Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage
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    Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage

    Published on: October 21, 2015

    Related Experiment Videos

    Last Updated: May 29, 2026

    Culturing and Measuring Fetal and Newborn Murine Long Bones
    06:58

    Culturing and Measuring Fetal and Newborn Murine Long Bones

    Published on: April 26, 2019

    Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
    07:23

    Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification

    Published on: December 3, 2016

    Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage
    06:40

    Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage

    Published on: October 21, 2015

    Area of Science:

    • * Molecular Biology
    • * Cell Biology
    • * Biochemistry

    Background:

    • * Studying human linear growth, particularly at the growth plate, is often limited to noninvasive methods.
    • * In vitro studies and animal models are crucial for understanding endochondral ossification and bone remodeling mechanisms.
    • * Chondrocytes and bone cells play vital roles in skeletal development and maintenance.

    Purpose of the Study:

    • * To outline key techniques for investigating molecular interactions and gene expression regulation in chondrocytes and bone cells.
    • * To highlight methods for studying the growth plate's cellular and molecular processes.
    • * To provide insights into potential diagnostic and therapeutic strategies for bone disorders.

    Main Methods:

    • * Microdissection of the growth plate for gene expression analysis using microarray and real-time PCR.
    • * Immunohistochemistry (IHC) for protein distribution analysis within growth plate layers.
    • * TUNEL assay for studying chondrocyte apoptosis.
    • * Organ (metatarsal) culture, primary cell culture, and cell line culture for chondrocyte differentiation studies.

    Main Results:

    • * Microdissection enables detailed zone-specific gene expression analysis and assessment of growth plate senescence.
    • * IHC effectively visualizes protein localization in distinct growth plate regions.
    • * TUNEL assay quantifies apoptosis in chondrocytes.
    • * Various culture methods allow exploration of chondrocyte differentiation under diverse experimental conditions.

    Conclusions:

    • * The described techniques provide powerful tools for dissecting growth plate biology.
    • * Understanding these cellular and molecular mechanisms is essential for advancing research in skeletal development.
    • * These methods are critical for developing new diagnostic and therapeutic approaches for growth and metabolic bone disorders.