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Related Concept Videos

Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

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Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
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Bone Disorders01:29

Bone Disorders

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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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Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

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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 ...
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Bone as Supporting Connective Tissue01:23

Bone as Supporting Connective Tissue

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Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts—...
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Bone Cells and Tissue01:30

Bone Cells and Tissue

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Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the...
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Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

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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...
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Related Experiment Video

Updated: Dec 9, 2025

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
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Bone and Soft Tissue Sarcoma.

Antonio Ruggiero1

  • 1Pediatric Oncology Unit, Fondazione Policlinico Universitario A.Gemelli IRCCS, Universita' Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy.

Cancers
|September 16, 2020
PubMed
Summary

Bone and soft-tissue sarcomas are rare tumors affecting all ages. Research is ongoing to improve understanding and treatment for these challenging cancers.

Area of Science:

  • Oncology
  • Pediatric Oncology
  • Surgical Oncology

Background:

  • Bone and soft-tissue sarcomas are rare malignancies affecting both pediatric and adult populations.
  • These tumors present unique challenges due to their diverse histology and potential for metastasis.

Discussion:

  • Current treatment strategies involve a multidisciplinary approach, including surgery, radiation therapy, and chemotherapy.
  • Understanding the molecular mechanisms underlying sarcoma development is crucial for targeted therapies.

Key Insights:

  • Early and accurate diagnosis is critical for effective management of bone and soft-tissue sarcomas.
  • Advances in imaging and molecular diagnostics are improving patient outcomes.

Outlook:

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  • Future research will focus on novel therapeutic targets and personalized treatment plans.
  • Improving long-term survival rates and quality of life for sarcoma patients remains a key objective.