Anatomy — MCQs January 8, 2026August 20, 2025 by u930973931_answers 50 Score: 0 Attempted: 0/50 Subscribe 1. What is the largest organ in the human body? (A) Heart (B) Skin (C) Liver (D) Lungs 2. Which bone is the longest in the human body? (A) Humerus (B) Tibia (C) Femur (D) Radius 3. Where is the pituitary gland located? (A) Hypothalamus (B) Brainstem (C) Sella turcica (D) Cerebellum 4. Which part of the brain controls balance? (A) Cerebrum (B) Cerebellum (C) Medulla oblongata (D) Thalamus 5. What type of joint is the shoulder joint? (A) Hinge (B) Ball and socket (C) Pivot (D) Gliding 6. The functional unit of the kidney is: (A) Alveolus (B) Nephron (C) Glomerulus (D) Tubule 7. Which is the largest artery in the body? (A) Pulmonary artery (B) Aorta (C) Carotid artery (D) Femoral artery 8. Which type of muscle is involuntary and non-striated? (A) Skeletal (B) Cardiac (C) Smooth (D) Voluntary 9. What is the total number of bones in an adult human body? (A) 206 (B) 210 (C) 204 (D) 208 10. Which chamber of the heart pumps oxygenated blood to the body? (A) Left atrium (B) Right atrium (C) Left ventricle (D) Right ventricle 11. What is the main function of red blood cells? (A) Transport oxygen (B) Fight infections (C) Produce hormones (D) Regulate blood sugar 12. Which part of the brain regulates breathing and heartbeat? (A) Midbrain (B) Cerebrum (C) Medulla oblongata (D) Pons 13. Which bone is known as the collarbone? (A) Sternum (B) Scapula (C) Clavicle (D) Radius 14. Which organ is responsible for detoxification in the body? (A) Kidney (B) Liver (C) Pancreas (D) Lungs 15. The smallest bone in the human body is: (A) Stapes (B) Malleus (C) Incus (D) Hyoid 16. Which blood cells are responsible for immunity? (A) RBCs (B) Platelets (C) WBCs (D) Plasma 17. What is the main structural protein in connective tissue? (A) Myosin (B) Keratin (C) Collagen (D) Elastin 18. Which organ stores bile? (A) Pancreas (B) Liver (C) Gallbladder (D) Stomach 19. The trachea is commonly known as the: (A) Food pipe (B) Windpipe (C) Voice box (D) Gullet 20. Which is the largest gland in the human body? (A) Thyroid (B) Pituitary (C) Liver (D) Pancreas 21. Which bone protects the brain? (A) Vertebrae (B) Skull (C) Ribs (D) Sternum 22. How many pairs of ribs are present in the human body? (A) 12 (B) 10 (C) 14 (D) 11 23. Which organ produces insulin? (A) Liver (B) Pancreas (C) Kidney (D) Stomach 24. The voice box is also called: (A) Pharynx (B) Trachea (C) Larynx (D) Bronchus 25. Which part of the eye controls the amount of light entering? (A) Cornea (B) Iris (C) Lens (D) Retina 26. The functional unit of the nervous system is: (A) Axon (B) Neuron (C) Dendrite (D) Synapse 27. The diaphragm is essential for: (A) Digestion (B) Breathing (C) Circulation (D) Hormone secretion 28. Which bone is called the breastbone? (A) Clavicle (B) Sternum (C) Scapula (D) Pelvis 29. Which part of the digestive system absorbs most nutrients? (A) Stomach (B) Large intestine (C) Small intestine (D) Rectum 30. Which part of the ear helps maintain balance? (A) Cochlea (B) Ossicles (C) Semicircular canals (D) Tympanum 31. Which bones form the backbone? (A) Vertebrae (B) Ribs (C) Sternum (D) Scapula 32. Which blood vessels carry blood away from the heart? (A) Veins (B) Arteries (C) Capillaries (D) Venules 33. The kidney is located in which cavity? (A) Thoracic (B) Cranial (C) Abdominal (D) Pelvic 34. What is the normal pH of human blood? (A) 6.8 (B) 7.4 (C) 7.0 (D) 7.6 35. The pancreas functions as both: (A) Kidney and liver (B) Endocrine and exocrine gland (C) Stomach and intestine (D) Lungs and heart 36. Which muscle separates the thoracic and abdominal cavities? (A) Pectoralis major (B) Diaphragm (C) Intercostals (D) Rectus abdominis 37. Which bone is known as the kneecap? (A) Tibia (B) Fibula (C) Patella (D) Femur 38. Which lobe of the brain controls vision? (A) Frontal (B) Parietal (C) Occipital (D) Temporal 39. Which part of the heart receives deoxygenated blood from the body? (A) Right atrium (B) Left atrium (C) Right ventricle (D) Left ventricle 40. The smallest unit of muscle contraction is: (A) Myofibril (B) Sarcomere (C) Actin (D) Myosin 41. The thyroid gland is located in the: (A) Thorax (B) Neck (C) Abdomen (D) Brain 42. Which cells are responsible for clotting of blood? (A) WBCs (B) Platelets (C) RBCs (D) Plasma 43. The structural and functional unit of the lungs is: (A) Bronchi (B) Alveoli (C) Trachea (D) Pleura 44. Which joint is found in the knee? (A) Pivot (B) Hinge (C) Gliding (D) Ball and socket 45. Which blood group is the universal donor? (A) A (B) B (C) AB (D) O 46. The spleen is part of which system? (A) Digestive (B) Immune (C) Respiratory (D) Endocrine 47. The cornea is part of which organ? (A) Eye (B) Ear (C) Nose (D) Skin 48. Which vitamin is essential for calcium absorption? (A) Vitamin A (B) Vitamin B12 (C) Vitamin C (D) Vitamin D 49. Which muscle is known as the heart muscle? (A) Skeletal (B) Smooth (C) Cardiac (D) Voluntary 50. Which organ is called the “seat of intelligence”? (A) Cerebrum (B) Cerebellum (C) Medulla (D) Hypothalamus