HSC 214: BONE TISSUE
21 Cards in this Set
| Front | Back |
|---|---|
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Diaphysis
|
Shaft
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Epiphyses
|
Ends, 2
|
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Metaphysis
|
area btw epiphyses and diaphysis
|
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Articular Cartilage
|
Coating on outside of epiphyses
|
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Epiphyseal Plate
|
-Where bones grow
-In adults, its just a line vs a plate
|
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Periosteum
|
Coating of the bone
-Fibrous outer layer
|
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Medullary or Marrow Cavity
|
-Contains bone marrow, may be yellow or red.
|
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Endosteum
|
Inner boney surfaces are lined with this.
|
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Nutrient Artery/Vein
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Usually only one entering the diaphysis through a nutrient foramen, some bones have 2 or more.
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Nutrient Foramen/Canal
|
arties and veins go in and out through this.
|
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Periosteal Vessels
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Blood vessels from the peiosteum are incorporated into the devoping bone surface. Provide blood to the superficial osteons of the shaft.
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Metaphysis Vessels
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Supply blood to the inner surface of each epiphyseal cartilage, where bone is replacing cartilage
|
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Epiphyseal Vessels
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Vessels that use foramina supply the osseous tissue and medullary cavities of the epiphyses.
|
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Innervation of Bone
|
-Vasomotor-Constrict and dialate vessels
-Sensory
|
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Osteocytes
|
Mature Bone cells
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Lacunae
|
Small chambers that osteocytes occupy
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Canaliculi
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Channels that radiate through the matrix from lacuna to lacuna and toward free surfaces and adjacent blood vessels.
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Osteoblasts
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Cells that are cuboidal in shape and found on the inner or outer surfacese of a bone. Secrete the organic components of the bone matrix.
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Osteoid
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What the osteoblasts secrete, later becomes mineralized.
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Osteoprogenerator Cells
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Can divide to produce daughter cells that differentiate into osteoblasts. The ability to produce additional osteoblasts becomes extremely important after a bone is cracked or broken.
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Osteoclasts
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secrete acids that dissolve the bony matrix and release amino acids and the stored calcium and phosphate. The process is called Osteolysis.
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HSC 214: HEART