Parts of a Long Bone Quiz

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?

Covers end of bones to prevent friction Signup and view all the answers

What is the periosteum?

A dense fibrous membrane covering the surface of bones Signup and view all the answers

What is the medullary cavity?

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

What is the endosteum?

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

What is red bone marrow?

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

What is yellow bone marrow?

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

What is the epiphyseal line?

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

What is spongy bone?

Layer of bone tissue having many small spaces and found just inside the layer of compact bone 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.

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.