Histology MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. Which stain is most commonly used for routine histological examination? (A) Hematoxylin and Eosin (B) Safranin (C) Silver stain (D) PAS stain 2. The functional unit of a liver is known as: (A) Nephron (B) Hepatic lobule (C) Acinus (D) Islet 3. The basic structural unit of the kidney is: (A) Glomerulus (B) Loop of Henle (C) Nephron (D) Collecting duct 4. Which tissue is avascular? (A) Muscle (B) Cartilage (C) Bone (D) Nerve 5. What type of epithelium lines the urinary bladder? (A) Simple cuboidal (B) Stratified squamous (C) Transitional (D) Simple columnar 6. Goblet cells are responsible for the secretion of: (A) Enzymes (B) Mucus (C) Hormones (D) Bile 7. Which cells are responsible for myelin production in the central nervous system? (A) Schwann cells (B) Oligodendrocytes (C) Microglia (D) Astrocytes 8. The islets of Langerhans are located in: (A) Liver (B) Kidney (C) Pancreas (D) Spleen 9. The functional unit of skeletal muscle is: (A) Myofibril (B) Sarcomere (C) Myofilament (D) Endomysium 10. What is the main structural protein of connective tissue? (A) Actin (B) Elastin (C) Collagen (D) Myosin 11. In which layer of the skin are hair follicles located? (A) Epidermis (B) Dermis (C) Hypodermis (D) Stratum corneum 12. Which cell is responsible for bone resorption? (A) Osteoblast (B) Osteocyte (C) Osteoclast (D) Chondrocyte 13. The Purkinje fibers are found in: (A) Brain (B) Heart (C) Liver (D) Kidney 14. Which epithelium lines the alveoli of the lungs? (A) Stratified squamous (B) Simple cuboidal (C) Simple squamous (D) Transitional 15. Which type of cartilage is found in the intervertebral discs? (A) Elastic cartilage (B) Hyaline cartilage (C) Fibrocartilage (D) Calcified cartilage 16. Which cells produce antibodies? (A) T lymphocytes (B) Plasma cells (C) Monocytes (D) Neutrophils 17. The myelin sheath in the peripheral nervous system is produced by: (A) Oligodendrocytes (B) Schwann cells (C) Microglia (D) Ependymal cells 18. The glomerulus is part of which organ? (A) Liver (B) Kidney (C) Lung (D) Pancreas 19. What type of epithelium is found in the lining of blood vessels? (A) Simple cuboidal (B) Stratified squamous (C) Simple squamous (D) Pseudostratified columnar 20. Which cell type is the primary structural component of the central nervous system? (A) Astrocytes (B) Neurons (C) Schwann cells (D) Fibroblasts 21. Which gland has both endocrine and exocrine functions? (A) Thyroid (B) Pancreas (C) Adrenal (D) Pineal 22. Which connective tissue cell is involved in allergic reactions? (A) Mast cell (B) Plasma cell (C) Fibroblast (D) Neutrophil 23. The nodes of Ranvier are found in: (A) Smooth muscle (B) Skeletal muscle (C) Myelinated nerve fibers (D) Unmyelinated fibers 24. The stratum basale is part of the: (A) Dermis (B) Epidermis (C) Hypodermis (D) Subcutaneous tissue 25. Which organ contains Malpighian corpuscles? (A) Liver (B) Spleen (C) Kidney (D) Pancreas 26. Which type of muscle is non-striated and involuntary? (A) Skeletal (B) Cardiac (C) Smooth (D) Mixed 27. Which is the main mineral stored in bone? (A) Sodium (B) Calcium (C) Potassium (D) Iron 28. The main component of myelin sheath is: (A) Protein (B) Lipid (C) Carbohydrate (D) Calcium 29. The basement membrane is located between: (A) Epithelium and connective tissue (B) Muscle and bone (C) Blood and lymph (D) Dermis and hypodermis 30. Which stain is used to demonstrate glycogen in tissues? (A) H&E stain (B) PAS stain (C) Wright’s stain (D) Giemsa stain 31. The epiphyseal plate is responsible for: (A) Nutrient supply to bone (B) Longitudinal growth of bone (C) Bone resorption (D) Articular cartilage formation 32. Which type of connective tissue stores fat? (A) Areolar (B) Dense regular (C) Adipose (D) Reticular 33. The functional unit of a skeletal muscle fiber is: (A) Myosin (B) Actin (C) Sarcomere (D) Endomysium 34. The primary pigment in melanocytes is: (A) Hemoglobin (B) Carotene (C) Melanin (D) Bilirubin 35. The lining of the trachea is composed of: (A) Simple cuboidal (B) Pseudostratified columnar with cilia (C) Stratified squamous (D) Transitional 36. Which cell type is responsible for the formation of myelin in the CNS? (A) Schwann cells (B) Astrocytes (C) Oligodendrocytes (D) Microglia 37. The Haversian system is found in: (A) Cartilage (B) Compact bone (C) Spongy bone (D) Ligaments 38. What is the primary function of fibroblasts? (A) Produce antibodies (B) Synthesize collagen and extracellular matrix (C) Store fat (D) Form blood vessels 39. Which type of epithelium is present in kidney tubules? (A) Simple cuboidal (B) Stratified squamous (C) Simple columnar (D) Transitional 40. Which type of cartilage is most abundant in the body? (A) Hyaline cartilage (B) Elastic cartilage (C) Fibrocartilage (D) Calcified cartilage 41. The neuroglial cells responsible for phagocytosis in the CNS are: (A) Astrocytes (B) Ependymal cells (C) Microglia (D) Oligodendrocytes 42. The outermost layer of the adrenal gland is called: (A) Zona glomerulosa (B) Zona fasciculata (C) Zona reticularis (D) Medulla 43. The inner lining of blood vessels is termed: (A) Adventitia (B) Endothelium (C) Perichondrium (D) Periosteum 44. Merkel cells are associated with: (A) Taste sensation (B) Light touch sensation (C) Pressure detection (D) Pain reception 45. The lymph node sinuses are lined by: (A) Fibroblasts (B) Reticular cells and macrophages (C) Endothelial cells (D) Mast cells 46. The Purkinje cells are found in: (A) Heart (B) Liver (C) Cerebellum (D) Kidney 47. Which structure anchors epithelial cells to the basement membrane? (A) Tight junctions (B) Desmosomes (C) Hemidesmosomes (D) Gap junctions 48. The thymus is primarily involved in: (A) B cell maturation (B) T cell maturation (C) Red blood cell formation (D) Platelet production 49. Which layer of the skin is avascular? (A) Epidermis (B) Dermis (C) Hypodermis (D) Subcutaneous tissue 50. 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