Podcast
Questions and Answers
What is the diaphysis?
What is the diaphysis?
Long main portion of a bone
What is the epiphysis?
What is the epiphysis?
End of a long bone
What are metaphyses?
What are metaphyses?
Region of a long bone between the epiphysis and diaphysis
What is the function of articular cartilage?
What is the function of articular cartilage?
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What is the periosteum?
What is the periosteum?
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What is the medullary cavity?
What is the medullary cavity?
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What is the endosteum?
What is the endosteum?
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What is red bone marrow?
What is red bone marrow?
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What is yellow bone marrow?
What is yellow bone marrow?
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What is the epiphyseal line?
What is the epiphyseal line?
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What is spongy bone?
What is spongy bone?
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Study Notes
Parts of a Long Bone
- Diaphysis: The long, central shaft of a bone that provides structural integrity and strength.
- Epiphysis: The terminal ends of a long bone, consisting of spongy bone covered by a thin layer of compact bone.
- Metaphyses: The region between the epiphysis and diaphysis, important for growth in length during childhood and adolescence.
Cartilage and Membranes
- Articular Cartilage: Smooth tissue that covers the ends of bones at joints, reducing friction and absorbing shock.
- Periosteum: A dense fibrous membrane that envelops the outer surface of bones (excluding the ends), playing a vital role in growth, repair, and attachment for muscles and tendons.
Internal Structures
- Medullary Cavity: The central cavity in the shaft of long bones, with a crucial role in housing bone marrow.
- Endosteum: A thin membrane lining the medullary cavity, involved in bone growth and repair, made of dense irregular connective tissue.
Bone Marrow Types
- Red Bone Marrow: The site of hematopoiesis (blood cell production), crucial for the body's immune and oxygen transport systems.
- Yellow Bone Marrow: Gradually replaces red marrow in adults and primarily serves as a fat storage site, with minimal involvement in blood cell production.
Growth Markers
- Epiphyseal Line: The remnant of the epiphyseal plate, indicating where growth occurred during development; important for understanding bone age and growth status.
- Spongy Bone: Found beneath the outer layer of compact bone, characterized by a porous structure, providing lightweight support and housing bone marrow.
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Description
Test your knowledge on the various components of a long bone with these flashcards. Learn about the diaphysis, epiphysis, metafyses, articular cartilage, and periosteum. Perfect for students studying anatomy and bone structure.
