Why are bone changes and deformities common findings in ?-thalassemias?
a. The globin chain synthesis is increased.
b. The impaired globin chain synthesis causes erythroid hypoplasia.
c. The impaired globin chain synthesis causes increased erythropoiesis resulting in bone marrow expansion.
d. The impaired globin chain synthesis causes impaired oxygen delivery to the bone tissue, which causes bone deformities.
Correct Answer: C
You might also like to view...
A hospital patient has been prescribed a dose of medication but the medication is never given, and no record can be found of an attempt to administer the medication. This is a(n) _________ error
A) unauthorized drug error B) unordered drug error C) wrong drug error D) omission error
Your unit has arrived on the scene of a multiple vehicle collision where several vehicles have rear-ended each other. You are directed by the incident commander to care for a 23-year-old female in the first vehicle. The firefighter on-scene holding manual spinal immobilization indicates that her primary complaint is back pain from her head whipping back and forth from the impact. Your
understanding of the anatomy of the spinal column and vertebrae suggests that this type of mechanism of injury results in frequent injuries to which part of the spinal column? A) Lumbar spine B) Cervical spine C) Thoracic spine D) Sacral spine
You are transporting a patient who was bitten on her hand by a spider about 20 minutes ago. On scene the primary assessment revealed no life threats and vital signs were stable. While conducting your reassessment, which one of the following would be of most concern to the EMT?
A) Swelling to the area of the bite B) Increased pain to the area of the bite C) Complaint of a headache D) Hives to the chest and abdomen
The respiratory quotient (RQ) value associated with substrate utilization patterns in normal, healthy individuals is which of the following?
a. 0.7 b. 0.8 c. 0.9 d. 1.0