Questions and Answers
What is compact bone?
What is being highlighted in the central canal of the osteon?
the central canal
What is being highlighted in the osteon?
the osteon
Label the following parts in high magnification - compact bone:
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What is being highlighted in the canaliculus of compact bone?
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What is being highlighted in the lacuna of compact bone?
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What is being highlighted in the lamella in the osteon of compact bone?
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What is being highlighted in the osteocyte?
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Label the following parts in SEM low magnification of compact bone:
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What is being highlighted in the concentric lamellae of osteon?
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What is being highlighted in the lacuna of compact bone?
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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.
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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.
