Cartilage and Bone Flashcards
what are bone and cartilage an example of
skeletal connective tissue
where is cartilage found in the body
external ear
nose
intervertabral disc
articular cartillage in joints
costal
pubic symphysis
mensiscus
what are the bones of the skeleton
axial and appendicular skeleton
what are the different forms of cartilage
hyaline cartilage, elastic cartilage, and fibrocartilage
what features are common to all 3 cartilages
the ground substance, fibres and cells
what is the extracellular matrix
firm, solid, glassy gel
what do the physical properties of cartilage depend on
compositiono f the ECM and the type and arrangement of fibres
what is hyalin cartilage
the most common form of cartilage, and abundant ground substance. contains collagen fibres
what is lacunae
a small chamber in the matrix occupied by one or more chondrocytes
what are the features of elastic cartilage
highly flexible
found in outer ear/epiglottis
histologically similar to hyaline cartilage
elastic fibres are concentrated around the lacunae
collagen fibres are also present
what is hydroxyapatite
mineralised crystals of calcium and phosphate
are bones organs
yes
what do bones consist of
bone tissue
ct proper
adipose tissue
blood vessels
nervous tissue
articular cartilage
what are the different conformations of bone tissue
compact bone and spongy bone
what is cortical bone
compact bone
what is trabecular bone
spongy bone
what are the different cells of bone tissue
- osteogenic/ osteoprogenitor cell
- osteoblast
- osteocyte
- osteoclast
what are osteoprogenitor cells
bone cell precursors that give rise to osteoblasts
what are osteoblasts
cells that synthesis and secrete bone tissue known as osteoid. they also gives rise to osteocytes
what are osteocytes
cells that maintain mineralised bone tissue
what are osteoclasts
cells that resorb bone. they are derived from monocytes and macrophage lineage
what is the periosteum composed of
outer fibrous layer and an inner osteogenic layer