Module 2 - Cartilage + Bone
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19 Terms
3 Types of Lamellae
Concentric - rings
Interstitial - irregular between osteons
Circumferential - parallel to surface
5 Functions of CT in Skeletal System
Support
Protection
Movement
Production - blood cells
Storage - triglycerides
Perforating Canals
Transverse channels that join blood vessels/nerves from periosteum to central canals
Medullary Cavity - Children vs Adults
Red vs yellow bone marrow
Nutrient/Waste Transport - Bone
Interstitial fluid of lacunae/canaliculi
Gap junctions between osteocytes
4 Bone Tyes
Long
Short
Flat
Irregular
Flat Bones
Cranium
Sternum
Ribs
Scapula
Hyaline - where
Trachea rings/bronchi
Articular cartilage
Fibrocartilage - where
Intervertebral discs
Pubic symphysis
Elastic - where
Ear
Epiglottis
Cartilage - 5 Parts
Perichondrium
Chondroblasts
Chondrocytes
Lacunae
ECM - fibres + ground substance
Appositional
Increase width
Add outer layers
Interstitial
Increase length
Divide within
Bone - ECM
35% organic - collagen + proteoglycans
65% inorganic - hydroxyapatite
Bone ECM - Collagen
Osteoblasts - exocytosis
Flexibility
Bone ECM - Hydroxyapatite
Osteoblasts - exocytosis
Hardness
Osteoblasts - where
Periosteum
Endosteum
Osteoclasts - Origin + Where + Function
Macrophages/monocytes in red bone marrow
Periosteum + endosteum
Resorption
Sharpey’s Fibres
Anchor periosteum/tendons/ligaments into bone