Breathing and Exchange of GasesHard
Question
With reference to the blood in a normal person, which one of the following statements is correct?
Options
A.Compared to arteries, veins are less numerous and hold less of the body′s blood at given time.
B.Blood cells constitute about 70 percent of the total volume of the blood.
C.White blood cells (WBC)are mad by lymph nodes only.
D.The blood has more platelets than WBC.
Solution
The number of blood platelets per cubic mm in human of blood. Veins are as complex as the arteries. Veins and arteries both are type of blood vessel. Arteries carry blood from different organs to heart. At any given time in a healthy human, The blood amount is same in both, As the circulation of blood never stops.
Blood consists of two parts :
The plasma (water, proteins, inorganic salts and other elements) constitutes 55-60% of blood while cellular part constitutes 40-45% of total blood. WBC are produced in red bone marrow. lymph nodes and sometimes even in liver and spleen.
Blood consists of two parts :
The plasma (water, proteins, inorganic salts and other elements) constitutes 55-60% of blood while cellular part constitutes 40-45% of total blood. WBC are produced in red bone marrow. lymph nodes and sometimes even in liver and spleen.
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