Bone Tissue Labelling Flashcards

Study Notes

Bone Tissue Overview

Bone tissue, also known as osseous tissue, primarily functions to support, protect, and store important substances like calcium and fats.

Types of Bone Tissues

There are two primary types of bone tissue: compact bone and spongy bone.

Compact Bone

Compact bone is a dense and hard type of bone structured from microscopic units called osteons.
It forms the diaphysis (shaft) of long bones and the outer shell of the epiphyses and other bones.

Bone Cells

Osteoblasts are specialized cells responsible for forming new bone.
Osteocytes reside in tiny spaces called lacunae located between the concentric rings of lamellae.

Lamellae

Lamellae are the layers that compose osteons, resembling rings in a tree.
They provide structural support and house osteocytes within their lacunae.

Central Canals

Central canals run parallel to the length of the bone, containing vital blood vessels and nerves.

Lacunae

Lacunae are small cavities between lamellae where osteocytes are found, playing a crucial role in bone maintenance.

Endosteum

The endosteum is a membrane that lines the inner surface of bones, contributing to bone growth and repair.

Perforating Canal

Perforating (or Volkmann’s) canals connect central canals and are essential for blood vessel and nerve communication across different regions of bone.

Osteon

An osteon, or Haversian system, is the fundamental structural unit of compact bone, consisting of a central canal surrounded by concentric lamellae.

Canaliculi

Canaliculi are tiny channels that allow communication between osteocytes and facilitate nutrient and waste exchange.

Periosteum

The periosteum is a dense layer of connective tissue that envelops bones and aids in their protection and nourishment.

Sharpey's Fibers

Sharpey's fibers are collagen fibers that anchor the periosteum to the underlying bone, ensuring stability.

Osteocyte in Lacuna

Osteocytes within lacunae are essential for monitoring and maintaining bone matrix health.

Summary

Understanding these components is crucial for comprehending bone structure and function, highlighting how bones serve as dynamic organs, critical for overall health and mobility.

Description

Test your knowledge of bone tissue with these flashcards. Learn about the functions of osseous tissue, the types of bone structures, and the specifics of compact and spongy bone. Perfect for anatomy students looking to reinforce their understanding of skeletal biology.

Bone Tissue Labelling Flashcards

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Questions and Answers

What is bone (osseous tissue) primarily responsible for?

What are the two types of bone tissues?

What characterizes compact bone?

What are osteoblasts?

Osteocytes lie between the hard layers of the ______ in little spaces called lacunae.

What are the rings in the osteon called?

What do central canals contain?

What are lacunae?

What is endosteum?

What is a perforating canal?

What is an osteocyte in lacuna?

What is an osteon?

What is a lamella?

What is periosteum?

What are Sharpey's fibers?

What is a central canal?

What are canaliculi?