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Title: Osteology notes
Description: Basic osteology study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
Description: Basic osteology study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
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Osteology
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Compact: Cortical
Spongy: Trabecular
Marrow spaces contain erythrocytes and leucocytes
- Osteocytes visible in lacunae
Composition
- Bone tissue
- Hyaline cartilaginous tissue
- Dense regular fibrous connective tissue
- Bone marrow (reticular connective tissue)
- Fibrillar matrix
- Amorphous ground substance
- Cells
Functions
- Mechanical (support, protection, muscle attachment, facilitate movement)
- Metabolic
o Mineral storage
o Calcium homeostasis
o Hematopoiesis
Cellular organisation
Osteoblasts: Bone forming
- Produce AMORPHOUS ground substances
- Do NOT calcify/mineralize bone
Osteoclasts: Bone resorbing cells
- Degrade bone matrix to release calcium into blood
- Multinucleated
Osteocytes: Mechanical sensors in bone
- Detect changes in mechanical environment to initiate change in bone
matrix
- Mature osteoblasts
- Reside in lacunae
Shape
Long bone (ulna & radius)
Short bone (carpals)
Flat bone (ribs & sternum, cranial
vault)
Irregular bone (sacrum & Os coxa,
vertebra)
Sesamoid bone (patella)
Description
Longer than they are wide
Roughly cube-like
Thin, flattened, usually slightly
curved
Fit non of the preceding classes
Seed-like, short bones embedded in
tendons
Tiny, irregularly shaped
...
Diarthroses
Title: Osteology notes
Description: Basic osteology study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.
Description: Basic osteology study notes used for first year bachelor of Biomedical science at Queensland University of Technology. Basic foundation for anyone studying or wanting to study biology, anatomy or medicine at university.