Anatomy Lab: Skeletal System Flashcards

Study Notes

Compact Bone Overview

Compact bone is a dense and strong type of bone tissue forming the outer layer of bone.
Contains structural units called osteons, which are crucial for its functionality.

Osteon Structure

An osteon consists of a central canal that houses blood vessels and nerves.
Central canal is encircled by concentric lamellae, providing strength and resilience.
Osteocytes, mature bone cells, reside in small cavities called lacunae.

Key Components of Compact Bone

Central Canal: Contains blood vessels and is integral to nutrient transport.
Osteocytes: Maintains bone tissue; communicates with other cells through canaliculi.
Canaliculi: Microscopic channels connecting osteocytes, allowing for the exchange of nutrients and waste.
Lacuna: Space housing osteocytes, critical for bone health.
Lamellae: Layers of calcified matrix around the central canal; critical for structural integrity.

High Magnification Details

Labels at high magnification yield a clear view of:
- Canaliculus: Tiny channels facilitating communication and nutrient exchange among osteocytes.
- Lacuna: Each contains an osteocyte and is vital for maintaining bone homeostasis.
- Lamellae: Multiple layers create a robust structure, allowing bone to bear weight.

Scanning Electron Microscopy (SEM) Insights

Low magnification using SEM offers a detailed view of:
- Concentric lamellae: Essential for strength and weight distribution in bone.
- Central canal and lacunae highlighted to understand the architecture of compact bone visualized at the microscopic level.

Description

Test your knowledge of the skeletal system with these flashcards focused on the histology of compact bone. Label and identify important parts such as the osteon and central canal. Ideal for students looking to reinforce their understanding of bone structures.