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, SECTION 1: BLOOD COMPOSITION AND PROPERTIES
Q1. Blood is classified as which type of tissue?
A) Epithelial tissue
B) Muscle tissue
C) Nervous tissue
D) Connective tissue
Rationale: Blood is a specialized connective tissue because it consists of cells (formed
elements) suspended in a liquid extracellular matrix called plasma. This classification is
based on its embryonic origin and the presence of matrix between its cells.
Q2. What is the normal pH range of human blood?
A) 7.00 - 7.25
B) 7.50 - 7.65
C) 6.80 - 7.00
D) 7.35 - 7.45
Rationale: Human blood is slightly alkaline with a normal pH range of 7.35 to 7.45. This
narrow range is critical for proper enzyme function and is maintained by buffer systems,
including the bicarbonate buffer system, phosphate buffer system, and plasma proteins.
Q3. Which of the following is NOT a primary function of blood?
A) Transportation of oxygen and nutrients
B) Regulation of body temperature
C) Protection through immune responses
D) Synthesis of vitamin D