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5 Written Questions

5 Matching Questions

  1. ossification
  2. repair of fractures 2/2
  3. Functions of bone (5)
  4. appositional growth
  5. peri
  1. a 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. b 1. Normally 8 - 12 weeks (longer in elderly)
    2. Stages of healing
    a. Fracture hematoma - clot forms, then osteogenic cells form granulation tissue
    b. Soft callus
    i. Fibroblasts produce fibers and fibrocartilage
    c. Hard callus
    i. Osteoblasts produce a bony collar in 6 weeks
    d. Remodeling in 3 to 4 months
    i. spongy bone replaced by compact bone
  3. c bone formation
  4. d growth in diameter
  5. e around

5 Multiple Choice Questions

  1. 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
  2. helps the bone not be so heavy. Line up the points of stress, not across.

    1. Sponge like appearance formed by plates of bone called trabeculae
    2. Trabeculae have few osteons or central canals
    - No osteocyte is far from blood of bone marrow
    3. Provides strength with little weight
    - Trabeculae develop along bone's lines of stress
  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
  4. osteoclasts, if the level of calcium in the blood is low & vitamin D systhesis (which increases the efficiency of absorption of calcium in the intestines)
  5. high blood calcium levels results in stimulation of osteoblasts and inhibit osteoclasts

5 True/False Questions

  1. central or Haversian canalblood vessels, lymphatic vessels & nerves

          

  2. osteogenesisno calcium. deterioration of vertebral support.

    1. Bones lose mass and become increasingly brittle and subject to fractures
    2. More prevalent in women - postmenopausal
    3. Men develop later in life - senile

    genetics, diet & exercise

          

  3. osteoporosisno calcium. deterioration of vertebral support.

    1. Bones lose mass and become increasingly brittle and subject to fractures
    2. More prevalent in women - postmenopausal
    3. Men develop later in life - senile

    genetics, diet & exercise

          

  4. endochondral ossification 1/21. Most bones develop this process
    2. Formation of primary ossification center and marrow cavity in shaft of model
    a. Bony collar developed by osteoblasts
    b. Chondrocytes swell and die
    c. Stem cells give rise to osteoblasts and clasts
    d. Bone laid down and marrow cavity created

    epiphysis - needs to be remodeled (reshaped)
    bone grows on the outside and then an inner layer disappears by osteoclasts. this is so the bones don't get too heavy

          

  5. lamellainside

          

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