1. Which of the following is a primary function of the hematopoietic system? A. Synthesis of digestive enzymes B. Regulation of body temperature C. Production of blood cells D. Detoxification of poisons Answer: C. Production of blood cells Rationale: The hematopoietic system is responsible for the production and development of blood cells, which occurs in the bone marrow. 2. A patient presents with an elevated white blood cell count. This could indicate: A. Anemia B. Infection C. Dehydration D. Vitamin deficiency Answer: B. Infection Rationale: An elevated white blood cell count is typically a sign of infection, as these cells play a key role in the immune response. 3. The process by which oxygenated blood is transported to the body's tissues is known as: A. Hemostasis B. Hematopoiesis C. Systemic circulation D. Pulmonary circulation Answer: C. Systemic circulation Rationale: Systemic circulation refers to the part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart. 4. A decrease in platelet count, leading to prolonged bleeding times, is known as: A. Thrombocytosis B. Thrombocytopenia C. Leukocytosis D. Leukopenia