Which of the following statements is true concerning articular cartilage injury?
a. A superficial laceration is capable of healing itself by filling in with fibrovascular tissue.
b. A deep cartilage lesion does not extend beyond the tidemark.
c. A deep laceration may heal by forming new fibrocartilage.
d. A superficial lesion is likely to heal faster than a deep one.
ANS: C
Unless an injury breaks through the uncalcified cartilage layer, known as the tidemark, it is
unlikely that it will heal. If an injury breaks through this layer, it is likely that the blood supply
from the subchondral bone may play a role in forming new fibrocartilage in place of hyaline
cartilage. This may lead to endochondral ossification over time, but it is the only opportunity
cartilage has for self-repair.
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When you have completed a routine ECG, how should you report the results?
A. Place the report in the patient's chart. B. Use the method required by the facility where you are working. C. Hand the results personally to the physician who ordered the ECG. D. Place the report on the physician's desk.
The portion of the bone that produces red blood cells is the __________.
Fill in the blank(s) with the appropriate word(s).