MCQ
With reference to the blood in a normal person, which one of the following statements is correct?
- AWhite blood cells $\text{(WBC)}$ are made by lymph nodes only.
- BBlood cells constitute about $70$ percent of the total volume of the blood.
- CCompared to arteries, veins are less numerous and hold less of the body’s blood at any given time.
- ✓The blood has more platelets than $\text{WBC}.$