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5 Written questions

5 Matching questions

  1. canaliculi
  2. osteon
  3. types of bone (6)
  4. structure of the osteon (3 & 5 components)
  5. calcitonin secretion
  1. a like like little cracks, actually canals
  2. b cylinder shaped structural unit in compact bone
  3. c high blood calcium levels results in stimulation of osteoblasts and inhibit osteoclasts
  4. d bone tissue can repair itself due to blood supply

    1. AKA Haversian systems
    2. Permit delivery of nutrients and removal of waste products
    3. Components
    a. Lamella - layers, rings, aka matrix
    b. Lacunae - dimples (osteon sits in lacunae)
    c. Canaliculi - like like little cracks, actually canals
    d. Central or Haversian canal - blood vessels, lymphatic vessels
    e. Volkmann's or Perforating canals - mainly blood vessels. connects central canals (ex. if one central canal gets clogged then get from here)
  5. e 1. Cancellous (Spongy) Bone - inside bone
    2. Compact Bone - outside
    3. Long Bones - femur, tibia & humerous
    4. Short Bones - carpals, tarsals
    5. Flat Bones - skull, sternum
    6. Irregular Bones - pelvis

5 Multiple choice questions

  1. to make RBCs
    1. Support (ex. to stand up)
    2. Protection (ex. cover vital organs)
    3. Movement - muscles covers - movement
    4. Mineral storage - calcium, 98% of calcium is stored in bone. (too much calc. in blood, then store in bones - like a bank, can add to bank until 30-35)
    5. Hematopoiesis (blood formation) - formation of blood cells, RBC, WBC, Platelets

    can't live w/o calc.
  2. thoracic curve (hunchback)
  3. blood vessels, lymphatic vessels & nerves
  4. bone formation
  5. bone marrow

5 True/False questions

  1. Bone cells (3)1. Myeloid (myelo=bone marrow) tissue
    2. In medullary cavity (long bone) and among trabeculae (spongy bone)
    3. Site for the production of blood cells
    a. Red marrow
    i. In vertebrae, ribs, sternum, pelvic girdle and proximal heads of femur and humerus in ADULTS
    b. Yellow marrow
    i. Fatty marrow of long bones in adults

    Note: kids have RBC in marrow in long bones b/c still growing

          

  2. Repair of fractures 1/21. Fracture tears and destroys blood vessels that carry nutrients to osteocytes
    2. Vascular damage initiates repair sequence
    3. Callus - specialized repair tissue that binds the broken ends of the fracture together
    4. Rapidly growing callus tissue effectively collars broken ends and stabilizes fracture so healing can proceed.

          

  3. Development of bone (3)1. Osteogenesis
    2. Intramembranous ossification - replaces membrane
    a. Occurs within a connective tissue membrane
    b. Apposition growth
    i. Adds bone tissue to outer surface (inside to outside) "suture" is where the bones grew together w/bone cells.
    3. Endochondral ossification - replace cartilage
    a. Occurs within a cartilage model
    b. Bone is deposited by osteoblasts
    c. Appositional and Interstitial growth
    i. Increases in diameter and length

          

  4. endochondral ossification 1/21. Secondary ossification centers and marrow cavities form in ends of bone
    2. Cartilage remains as articular cartilage and epiphyseal (growth) plates
    a. Growth plates provide for increase in length of bone during childhood and adolescence
    b. Disappear when growth stops

          

  5. stages of ossificationbone formation