Blood is a fluid connective tissue composed of 55% plasma and 45% formed elements including WBCs, RBCs, and platelets. Since these living cells are suspended in plasma, blood is known as a fluid connective tissue and not just fluid. Provides oxygen to the cells. Blood absorbs oxygen from the lungs and transports it to different cells of the body.
1.Which of the following are components of blood?
a. Plasma
b. Blood cells and platelets
c. Gases and other substances
d. All of the above.
2. The life span of RBC is
a. 50 days
b. 75 days
c. 100 days
d. 120 days
3. The life span of WBC is
a. Less than 14 days
b. Between 20 to 30 days
c. Between 2 to 3 months
d. More than 4 months
4. What is the main function of RBC?
a. To fight diseases in the body
b. To carry oxygen to different parts of the body
c. To increases levels of WBC
d. To arrest bleeding
5. Why is the colour of blood red?
a. Due to the presence of magnesium
b. Due to the presence of cytoglobin
c. Due to the presence of haemoglobin
d. All of the above
