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15 Cards in this Set
- Front
- Back
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Skeletal System is composed of
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Bones, cartilages, and ligaments joined tightly to form a strong, flexible framework for the body.
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Functions of the skeleton
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Support
Protection Movement Electrolyte Balance Balancing pH Blood Formation |
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Bone (osseous tissue)
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a type of connective tissue in which the matrix is hardened by the deposition of calcium phosphate and other minerals
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Mineralization (calcification)-
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the hardening process
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Bone(organs)-
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osseous tissue with blood vessels, blood, nerves, fat and cartilage
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Four types of bones
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Flat
Short Long Irregular |
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Anatomy of a long bone
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Diaphysis- the shaft
Epiphysis- Located on the ends of the bone Articular Cartliage- located on the surface of the epiphysis |
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Two types of bone tissue
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Compact- Central canal is a hallow space where blood vessels run through.
Spongy- Found more in the epiphysis |
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Marrow Cavity
Red Bone Marrow Nutrient Foramina |
Hollow cavity inside the diaphysis
produces blood Small holes in the bone |
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Bone Development (Ossification)
Intramembranous Ossification |
Produces the flat bones of the skull and most of the clavicle
Mesenchyme--Bone |
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Endochondral Ossification
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Inside cartilage
Mesenchyme--Cartilage--Bone The bone is called Cartilage-Replacement Bone |
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Physiology of Osseous Tissue
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Role of Osteoblasts and Osteoclasts
Osteoblasts- Mineral deposition Osteoclasts- Mineral Resorptiion |
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Importance of Calcium and Phosphorus
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Calcium- Bone tissue matrix, nerve function, muscle function
Phosphorus- Bone tissue matrix, Nucleic acid, ATP, phopholipids, acid base balance |
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Hypocalcemia
Hypercalcemia |
not enough calcium in blood
too much calcium in blood Calcitonin--Calcitriol--PTH |
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Hormones
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Secreted into the blood
Travel Everywhere Affects target organ only |
