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5 Written questions

5 Matching questions

  1. long bones
  2. healing of a simple fracture
  3. fact: calcified cartilage is not bone
  4. spongy bone aka
  5. deep layer (periosteal membrane)
  1. a (1) hematoma formation
    (2) fibrocartilaginous callus formation
    (3) bony callus formation
    (4) bone remodeling
  2. b longer than they are wide
    - has a shaft and two distinct ends
  3. c trabecular bone
  4. d osteogenic, containing bone-depositing cells (osteoblasts) and bone-destroying cells (osteoclasts)
    - indistinguishable from the fibroblasts within this layer
  5. e bone and cartilage are always distinct tissues

5 Multiple choice questions

  1. between the dipahysis and each epiphysis of an adult long bone
    - line is a remnant of the epiphyseal plate, a disc of hyaline cartilage that grows during childhood to lengthen the bone
  2. roughly cube-shaped
    - occur in the wrist and ankle
  3. internal spongy bone in flat bones
  4. "growth from within"
    chondrocytes within the cartilage divide and secrete new matrix
  5. chondroblasts at the "top" of the stack that divide quickly, pushing the epiphysis away from the diaphysis, thereby causing the entire long bone to lengthen

5 True/False questions

  1. structure of a long bone- similar to long bones, but have no diaphysis
    - contain bone marrow (between the trabeculae of their spongy bone), but no marrow cavity is present


  2. bone markings (3 categories)- projections that are the attachment sites for muscles and ligaments
    - surfaces that form joints
    - depressions and openings


  3. periosteal budconnective tissue membrane that covers the entire outer surface of each bone except on the ends of the epiphyses, where articular cartilage occurs
    - provides insertion points for the tendons and ligaments that attach to a bone


  4. ricketseach of the tubes in an osteon
    - layer of bone matrix in which the collagen fibers and mineral crystals align and run in a single direction
    - fibers and crystals of adjacent lamellae always run in roughly opposite directions; alternating pattern is optimal for withstanding torsion, or twisting, stresses
    - also inhibiting crack propagation: when a crack reaches the edge of a lamella, the forces causing the crack are dispersed around the lamellar boundaries, thus preventing the crack from progressing into deeper parts of the bone and causing fracture


  5. perforating fibers (Sharpey's fibers)- thick bundles of collagen that run from the periosteum into the bone matrix
    - what secures the periosteum to the underlying bone