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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...

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...

Gross Anatomy of the Lungs

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The lungs are a pair of vital organs connected to the trachea via the left and right bronchi. The base of these organs meets the dome-shaped muscle known as the diaphragm. Encased by the pleurae, the lungs contact the mediastinum. The right lung is shorter yet wider, and has a larger volume than the left lung. The left lung has an indentation known as the cardiac notch. The superior region of the lungs is referred to as the apex, whereas the base is the lower region near the diaphragm. The...

Alveoli and Alveolar Ducts

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Growth of Cartilage and Bone Tissue

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[Calcification and ossification of lungs].

M V Samsonova, A L Cherniaev, N I Bubnova

Arkhiv Patologii

|February 1, 2012

Summary

This article discusses lung calcification and ossification, including rare conditions like pulmonary alveolar microlithiasis. It explores potential causes and mechanisms behind these lung pathologies.

Area of Science:

Pulmonology
Pathology
Radiology

Context:

Lung calcification and ossification are pathological processes affecting lung tissue.
These conditions can be idiopathic or secondary to various diseases.
Pulmonary alveolar microlithiasis represents a rare form of diffuse lung calcification.

Purpose:

To review the different types of lung calcification and ossification.
To describe the rare lung pathology, pulmonary alveolar microlithiasis.
To discuss the potential mechanisms involved in the development of lung calcification and ossification.

Summary:

The article categorizes various forms of lung calcification and ossification.
It details the characteristics and clinical relevance of pulmonary alveolar microlithiasis.

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Mechanisms contributing to the formation of calcifications and ossifications in the lungs are explored.

Impact:

Enhances understanding of diverse lung calcification and ossification etiologies.
Provides insights into the pathogenesis of rare lung diseases like pulmonary alveolar microlithiasis.
Aids clinicians and researchers in diagnosing and managing lung calcification disorders.