Human body systems and health (e.g., digestion, respiration, circulation) MCQs in Everyday Science [General] MCQs in Everyday Science [General]By: Prof. Dr. Fazal Rehman | Last updated: May 15, 2025 10 Score: 0 Attempted: 0/10 Subscribe 1. : Which of the following is the primary function of the digestive system? (A) Oxygenating blood (B) Breaking down food and absorbing nutrients (C) Regulating body temperature (D) Protecting the body from infections 2. : What organ is responsible for pumping blood throughout the human body? (A) Lungs (B) Brain (C) Heart (D) Liver 3. : Which system in the human body is responsible for the exchange of gases? (A) Digestive system (B) Circulatory system (C) Respiratory system (D) Nervous system 4. : Which of the following is NOT part of the circulatory system? (A) Arteries (B) Veins (C) Lymph nodes (D) Esophagus 5. : Which of these blood components is primarily responsible for clotting? (A) Red blood cells (B) White blood cells (C) Platelets (D) Plasma 6. : The process by which the body takes in oxygen and expels carbon dioxide is called: (A) Digestion (B) Circulation (C) Respiration (D) Excretion 7. : Which part of the digestive system is mainly responsible for water absorption? (A) Stomach (B) Small intestine (C) Large intestine (D) Liver 8. : Which hormone regulates blood sugar levels in the body? (A) Insulin (B) Adrenaline (C) Thyroxine (D) Estrogen 9. : What is the primary function of the kidneys? (A) Regulate blood pressure (B) Filter waste from the blood (C) Produce hormones (D) Break down fats 10. : Which part of the nervous system controls voluntary muscle movements? (A) Autonomic nervous system (B) Somatic nervous system (C) Central nervous system (D) Peripheral nervous system Related Posts:Difference between pulmonary circulation and systematic circulationDifference between pulmonary respiration and cutaneous respirationWhich vitamin cannot be stored in human body?Which of the following is an example of a first-class lever in the human body?Difference between ingestion and digestionWhich enzymes help in digestion?