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Bone Development: Endochondral and Intramembranous Ossification Study Guide

A guide to understanding the two fundamental processes of bone formation in the human body: endochondral ossification and intramembranous ossification. This guide details the mechanisms, stages, and cellular components involved in how bones grow from embryonic development through childhood and adolescence, including the roles of cartilage, fibrous membranes, and specialized bone cells.

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Introduction to the Skeletal System

Functions and Physiology of Bones

Bones are classified as connective tissue that supports soft tissues, protects, stores minerals, and produces RBCs.

  • Functions of Bones
  • Connective Tissue
  • Osteoblasts
  • Osteocytes
  • Osteoclasts
  • Osseous tissue
  • Red and yellow marrow
  • Periosteum
  • Endosteum
  • Compact bone
  • Cancellous bone
  • Haversian system
  • Haversian canal
  • Lacuna
  • Canaliculi
  • Volkmann’s canals
  • Calcium Homeostasis
  • Calcitonin
  • Parathyroid hormone

Processes of Bone Formation

Endochondral and Intramembranous Bone Formation

Bones are formed within cartilage or within fibrous membranes.

  • Endochondral ossification
  • Intramembranous ossification
  • Primary growth centre
  • Secondary growth centres
  • Epiphysis
  • Growth Plates
  • Osteoblasts
  • Cartilage replacement

Types of Bones and Surface Features

Bone Types and Surface Markings

This content describes types of bones, bone marrow, and various lumps and bumps on bone surfaces.

  • long bones
  • short bones
  • flat bones
  • irregular bones
  • diaphysis
  • epiphysis
  • medullary cavity
  • red bone marrow
  • yellow bone marrow
  • articular surfaces
  • head
  • facet
  • trochanter
  • tubercle
  • fossa
  • fovea
  • epicondyle
  • notch
  • groove

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