Parts of a Long Bone Quiz
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Questions and Answers

What is the diaphysis?

Long main portion of a bone

What is the epiphysis?

End of a long bone

What are metaphyses?

Region of a long bone between the epiphysis and diaphysis

What is the function of articular cartilage?

<p>Covers end of bones to prevent friction</p> Signup and view all the answers

What is the periosteum?

<p>A dense fibrous membrane covering the surface of bones</p> Signup and view all the answers

What is the medullary cavity?

<p>Cavity within the shaft of the long bones filled with bone marrow</p> Signup and view all the answers

What is the endosteum?

<p>Dense irregular connective tissue that lines the medullary cavities of long bones</p> Signup and view all the answers

What is red bone marrow?

<p>The kind of bone marrow in which blood cells are made</p> Signup and view all the answers

What is yellow bone marrow?

<p>Gradually replaces red bone marrow in adult bones; functions as storage for fat tissue</p> Signup and view all the answers

What is the epiphyseal line?

<p>The cartilage present at the junction of the diaphysis and epiphyses; a remnant of the epiphyseal plate</p> Signup and view all the answers

What is spongy bone?

<p>Layer of bone tissue having many small spaces and found just inside the layer of compact bone</p> Signup and view all the answers

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.

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