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Related Flashcards
Cards In This Set
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Functions of skeletal system
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Protection of internal organsMovement of skeletonSupport of body partsStorage of fat and mineralsSite of formation of all blood cell types in red bone marrow.
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What is the skeletal system primarily constructed of?
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Connective tissues
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Types of tissues in skeletal system?
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Cartilage tissueDense regular connective tissueBone tissue
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Cartilage tissue is...
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Avascular and do not heal as fast as bone
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All cartilage tissues provide...
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A more resilient surface to promote cushioning
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Types of cartilage tissues
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Hyaline cartilageElastic cartilageFibrocartilage
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Hyaline cartilage
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No fibers. most of fetal skelton, epiphyseal plates and articular surfaces on long bones withing joints, between ribs and sternum
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Elastic cartilage
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Elastin fibers. ears and epiglottis, not really skeletal element.
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Fibrocartilage
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Collagen fibers. Intervertebral disks, pubic symphysis.
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Dense regular tissue
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Fibroblasts secrete fibrous matrix (collagen fibers)Tendons attach muscle to bone and ligaments connect bone to bone.
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Bone tissue is...
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Vascular, rapid healing
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What role do osteoblasts and osteocytes play in bone tissue?
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Osteoblasts secrete matrix of calcium and phosphate crystals/collagen fibers while osteocytes maintain matrix. These cells live in lacunae.
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Spongy or cancellous bone tissue
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Bone matrix is formed into trabeculaeFound inthe interior of most bones as well as inside epiphysis of long bonesLightens bone and holds red bone marrow.
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Compact bone tissue
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Matrix formed in osteon which surrounds central canal through which blood vessels pass so that water, gasses, nutrients and wastes pass to osteobytes. Found in layer outside boneProvides most of strength of bone as wll as prevents breakage.
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Components of bone matrix
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CellsCollagen fibersPhosphate and calcium salts or crystals
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