Practice Quiz

ADA NBDE National Board Dental Part I

Category - NBDE

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Which of the following statements regarding blood is not true?
  1. the majority of blood is plasma, which makes up 55% of the total
  2. albumin regulates the vascular oncotic pressure
  3. hematocrit measures the portion of proteins in a blood sample
  4. blood comprises 8% of total body weight
Explanation
Answer: C - The amount of hematocrit found in blood is actually a measure of the erythrocyte percentage. Normally, the value is 45% in males and 40% in females.
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