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27 Cards in this Set
- Front
- Back
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Osseous Tissues
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Bone
Compact bone - rigid - support Spongy bone - red bone marrow Dentin - teeth - under the enamel; like bone |
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Bone
Functions |
Structural Support/Framework-everything is attached or connected in skeleton
Protection - main organs Movement - muscles are attached by tendons to bone Hemopoiesis - blood cell production; occurs in the red bone marrow (myeloid tissues) Mineral homeostasis - maintains Ca & P in the body Energy reserve - yellow bone marrow is adipose tissue |
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Bone
Composition |
33% organic
39% Calcium 0.2% Phosphorus Bone is a source of minerals Fig 6-13 in textbook |
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Bone
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Table 4-2
Osteocytes are in lacunae Ca is insoluble in water Collagen dominates bone Derived from mesenchyme Bone is constantly being remodelled Very difficult to break cartilage |
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Bones
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206 bones in the body
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Bones
Types |
Long bones
Flat Sutural Irregular Short Sesamoid |
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Bones
Long bones |
Most of the body
Made up of compact bone, spongy bone, and a marrow cavity Ex: femur, humerus Epiphysis Metaphysis(growth plate) Diaphysis (shaft) metaphysis epiphysis |
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Bones
Flat bones |
Protective bone
Ex: skull, ribs, sternum, hips, clavicle, scapula 22 outer shells |
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Bones
Sutural Bones |
Have sutures which are soft spots (fontanells
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Bones
Irregular |
Vertebrae
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Bones
Short |
Wrist bones
Tarsals of ankle |
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Bones
Sesamoid |
Patella (knee caps)
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Bone
Structure |
Cortex - compact bone
Diploe - spongy bone Osteocyte - mature bone cell that maintains the bone matrix Osteoblast - cell that makes bone Osteoprogenitor Osteoclast - multinucleated; eats the bone matrix with acids and exnzymes 9 little pac man) |
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Compact Bone
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Haversian System or Osteon
Haversion canal - a central canal with blood vessels - like channels Concentric lamellae Volkmann's Canal - perforating canals that come into bone - close to epiphysis (spngy bone) |
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Spongy Bone
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Lamellae
Web-like - in contrast to solid like compact bone |
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Cartilage
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at ends of long bones
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Ossification
Types |
Endochondral
Intramembranous |
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Endochondral Ossification
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Mesenchme
Cartilage Bone |
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Intramembranous Ossification
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Mesenchyme
Bone Ex: skull |
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Axial Skeleton
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Bones in the middle of Body
Ribs Sternum Skull vertebral column |
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Axial Skeleton
Skull |
8 cranial bones
14 facial bones 6 auditory ossicles and the hyoid bone are associated with the skull |
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Axial Skeleton
Vertebral Column |
24 vertebrae
Sacrum Coccyx |
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Axial Skeleton
Thoracic Cage |
Sternum
24 ribs |
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Cranial Bones
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Occipital bone
Frontal bone Sphenoid Ethmoid 2 Parietal bones 2 Temporal bones |
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Facial Bones
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Superficial Bones
Maxilla Lacrimal Nasal Zygomatic Mandible |
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Facial Bones
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Deep
Palatine Inferior nasal conchae Vomer - single All other facial bones are paired |
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Sutures
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Lambdoid- across posterior surface of skull
Coronal - Attaches frontal to parietal bones Sagittal - extends from lamdoid suture to the coronal suture between the parietal bones Squamous Suture - on each side of the skull between the temporal and parietal bone |
