Question

Choose the correct statements regarding human blood.
I. The volume of the blood in an adult is 5L.
II. It constitutes $30-35$ percent of the total extracellular fluid.
III. Glucose concentration in the blood is $${\displaystyle \frac{50mg}{100ml}}$$ $$$$
IV. Cholesterol concentration in the blood is $\frac{30mg}{100ml}$
V. Urea level in the blood is ${\displaystyle \frac{10mg}{100ml}}$

The option with the correct statement is-
A. I, II, and V
B. III, IV, and V
C. IV, and V
D. I, and II

Answer 1

Hint:The body fluid in humans and animals is blood. It is a liquid tissue that regulates the function of transferring nutrients and oxygen to each cell of the body. 7 percent of human body weight is contributed by the blood. The normal glucose concentration of the blood is 90-20 mg per 100ml.

Complete step-by-step answer:
Blood is a liquid tissue that is a part of the cardiovascular system of the human body. It accounts for 7 percent of the total human body weight. Blood composition consists of blood cells and plasma. Blood cells or blood corpuscles consist of erythrocytes that are red blood cells (RBC), leucocytes (WBC), and thrombocytes (platelets). The watery fluid called plasma forms $55$ percent of the total blood volume. Almost all the proteins, hormones, glucose, minerals, gases are suspended in plasma. Hemoglobin is the most important element in the red blood cell which helps in the exchange of gases within the cells. On average the volume of blood in an adult is 5L. 30-35 percent of the total extracellular fluid is present in the blood. Urea level in blood is $\frac{10mg}{100ml}$. The range of cholesterol levels in the blood varies depending on the age of an individual.
From the above statements, statements I, II, and V are correct.

Therefore, option A) is the correct option.

Note: The urea content in the blood can be found out by blood urea nitrogen test. This test gives all the important information about the functioning of the kidney. An increase in blood cholesterol level causes limited blood flow and increases the risk of heart attack or stroke. New advanced technology has invented an invasive method to detect the blood glucose level by using a glucose biosensor.