MCQ on Human Tissues

🟢 Easy Level (1–20)

1. How many basic types of tissues are there in humans?
   A) 2
   B) 3
   C) 4 ✅
   D) 5
   Explanation: The four types are epithelial, connective, muscular, and nervous tissues.
2. Which tissue type lines body cavities and surfaces?
   A) Muscle
   B) Epithelial ✅
   C) Connective
   D) Nervous
   Explanation: Epithelial tissue covers and lines surfaces.
3. Which tissue connects bones to muscles?
   A) Ligament
   B) Tendon ✅
   C) Cartilage
   D) Areolar
   Explanation: Tendons attach muscles to bones.
4. Which tissue stores fat in the body?
   A) Cartilage
   B) Adipose ✅
   C) Bone
   D) Areolar
   Explanation: Adipose tissue stores energy as fat.
5. What type of muscle is found in the heart?
   A) Smooth
   B) Skeletal
   C) Cardiac ✅
   D) Voluntary
   Explanation: Cardiac muscle makes up the heart wall.
6. Which connective tissue is fluid in nature?
   A) Cartilage
   B) Bone
   C) Blood ✅
   D) Ligament
   Explanation: Blood is a fluid connective tissue.
7. Which type of epithelial tissue is found in the kidney tubules?
   A) Squamous
   B) Cuboidal ✅
   C) Columnar
   D) Transitional
   Explanation: Simple cuboidal epithelium is involved in secretion and absorption.
8. Which muscle tissue is under voluntary control?
   A) Cardiac
   B) Smooth
   C) Skeletal ✅
   D) Involuntary
   Explanation: Skeletal muscles can be consciously controlled.
9. Which connective tissue joins bones together?
   A) Tendons
   B) Ligaments ✅
   C) Cartilage
   D) Muscles
   Explanation: Ligaments connect bones to other bones.
10. Which tissue transmits impulses?
    A) Epithelial
    B) Connective
    C) Muscular
    D) Nervous ✅
    Explanation: Nervous tissue conducts electrical signals.
11. Which epithelial tissue is thin and flat?
    A) Cuboidal
    B) Columnar
    C) Squamous ✅
    D) Transitional
    Explanation: Squamous epithelium has a flattened shape.
12. What is the main function of muscle tissue?
    A) Protection
    B) Absorption
    C) Movement ✅
    D) Support
    Explanation: Muscle tissue contracts to cause movement.
13. Which muscle type is non-striated and involuntary?
    A) Skeletal
    B) Cardiac
    C) Smooth ✅
    D) Voluntary
    Explanation: Smooth muscles are found in internal organs.
14. Bone is a type of:
    A) Epithelial tissue
    B) Connective tissue ✅
    C) Muscle tissue
    D) Nervous tissue
    Explanation: Bone supports and protects body structures.
15. Cartilage is a type of:
    A) Muscular tissue
    B) Nervous tissue
    C) Connective tissue ✅
    D) Epithelial tissue
    Explanation: Cartilage provides flexibility and support.
16. Which tissue helps in absorption in the intestine?
    A) Cuboidal epithelium
    B) Squamous epithelium
    C) Columnar epithelium ✅
    D) Transitional epithelium
    Explanation: Columnar cells are adapted for absorption.
17. What do neurons transmit?
    A) Hormones
    B) Impulses ✅
    C) Blood
    D) Enzymes
    Explanation: Neurons transmit electrical signals.
18. Where is smooth muscle found?
    A) Heart
    B) Biceps
    C) Walls of internal organs ✅
    D) Skull
    Explanation: Smooth muscles line the stomach, intestines, and blood vessels.
19. What is the function of cilia in epithelial cells?
    A) Secretion
    B) Absorption
    C) Movement of substances ✅
    D) Protection
    Explanation: Cilia help move substances along the surface.
20. Which of the following is a connective tissue?
    A) Muscle
    B) Blood ✅
    C) Skin
    D) Neuron
    Explanation: Blood is considered a connective tissue due to its origin and function.

🟡 Moderate Level (21–40)

21. Which tissue provides immunity and transport?
    A) Epithelial
    B) Muscular
    C) Blood ✅
    D) Cartilage
    Explanation: Blood transports cells involved in immunity.
22. Which epithelial tissue is found in the urinary bladder?
    A) Squamous
    B) Cuboidal
    C) Columnar
    D) Transitional ✅
    Explanation: Transitional epithelium stretches as the bladder fills.
23. Which connective tissue cushions organs and provides elasticity?
    A) Bone
    B) Cartilage
    C) Areolar ✅
    D) Ligament
    Explanation: Areolar tissue binds organs and holds fluids.
24. Which tissue contains actin and myosin filaments?
    A) Nervous
    B) Connective
    C) Muscular ✅
    D) Epithelial
    Explanation: Actin and myosin are muscle proteins responsible for contraction.
25. What do glial cells do?
    A) Conduct nerve impulses
    B) Produce red blood cells
    C) Support neurons ✅
    D) Store fat
    Explanation: Glial cells support and protect neurons.
26. Which connective tissue connects muscles to bones?
    A) Ligament
    B) Tendon ✅
    C) Areolar
    D) Cartilage
    Explanation: Tendons attach skeletal muscles to bones.
27. Which epithelial tissue appears multilayered but is not?
    A) Simple columnar
    B) Stratified cuboidal
    C) Pseudostratified ✅
    D) Simple squamous
    Explanation: Pseudostratified epithelium has nuclei at different levels but is a single layer.
28. Which connective tissue has a solid, rigid matrix?
    A) Blood
    B) Cartilage
    C) Bone ✅
    D) Areolar
    Explanation: Bone has a hard matrix made of calcium salts.
29. Intercalated discs are found in:
    A) Skeletal muscle
    B) Smooth muscle
    C) Cardiac muscle ✅
    D) All muscles
    Explanation: Intercalated discs help synchronize heart contractions.
30. Which connective tissue forms the outer ear?
    A) Hyaline cartilage
    B) Elastic cartilage ✅
    C) Fibrocartilage
    D) Areolar
    Explanation: Elastic cartilage provides shape and flexibility.
31. The matrix of connective tissue is composed of:
    A) Cells only
    B) Fibers only
    C) Ground substance and fibers ✅
    D) Plasma only
    Explanation: The matrix supports connective tissue cells.
32. Which type of epithelial tissue allows diffusion?
    A) Simple squamous ✅
    B) Stratified squamous
    C) Columnar
    D) Cuboidal
    Explanation: Simple squamous epithelium allows rapid diffusion.
33. Which cell type in connective tissue produces fibers?
    A) Mast cells
    B) Adipocytes
    C) Fibroblasts ✅
    D) Macrophages
    Explanation: Fibroblasts secrete collagen and elastin.
34. Which tissue is responsible for peristalsis?
    A) Cardiac muscle
    B) Skeletal muscle
    C) Smooth muscle ✅
    D) Areolar tissue
    Explanation: Smooth muscle contractions propel contents through the GI tract.
35. Which of the following lacks striations?
    A) Skeletal muscle
    B) Cardiac muscle
    C) Smooth muscle ✅
    D) None
    Explanation: Smooth muscle cells are non-striated.
36. The Haversian system is a feature of:
    A) Cartilage
    B) Areolar tissue
    C) Bone ✅
    D) Muscle
    Explanation: It’s a structural unit in compact bone.
37. Neurons are specialized to:
    A) Secrete enzymes
    B) Store minerals
    C) Conduct impulses ✅
    D) Transport oxygen
    Explanation: Neurons transmit electrochemical signals.
38. Which muscle type is branched and involuntary?
    A) Skeletal
    B) Smooth
    C) Cardiac ✅
    D) None
    Explanation: Cardiac muscle fibers are branched and involuntary.
39. Which tissue repairs damaged body parts?
    A) Epithelial
    B) Nervous
    C) Connective ✅
    D) Muscular
    Explanation: Connective tissues aid in tissue repair and regeneration.
40. Which connective tissue acts as a shock absorber in joints?
    A) Bone
    B) Cartilage ✅
    C) Areolar
    D) Tendon
    Explanation: Cartilage cushions joints.

🔴 Hard Level (41–50)

41. Which epithelial tissue has microvilli for absorption?
    A) Simple squamous
    B) Simple cuboidal
    C) Simple columnar ✅
    D) Stratified squamous
    Explanation: Microvilli increase surface area for absorption.
42. Which muscle tissue has a single nucleus per cell?
    A) Skeletal
    B) Cardiac
    C) Smooth ✅
    D) None
    Explanation: Smooth muscle fibers are uninucleate.
43. Which connective tissue contains large fat droplets?
    A) Areolar
    B) Adipose ✅
    C) Cartilage
    D) Blood
    Explanation: Adipose tissue stores energy in fat droplets.
44. Which cartilage type is found in intervertebral discs?
    A) Hyaline
    B) Elastic
    C) Fibrocartilage ✅
    D) Areolar
    Explanation: Fibrocartilage resists compression.
45. Neuroglia are:
    A) Connective tissue
    B) Supportive cells in nervous tissue ✅
    C) Fat-storing cells
    D) Cartilage cells
    Explanation: They support and protect neurons.
46. Which junction allows ions to pass between cardiac cells?
    A) Tight junctions
    B) Adherens junctions
    C) Gap junctions ✅
    D) Desmosomes
    Explanation: Gap junctions allow communication between cells.
47. Which tissue type regenerates most rapidly?
    A) Nervous
    B) Skeletal muscle
    C) Epithelial ✅
    D) Cardiac muscle
    Explanation: Epithelial tissue has high regenerative capacity.
48. Which protein gives connective tissue tensile strength?
    A) Actin
    B) Keratin
    C) Collagen ✅
    D) Elastin
    Explanation: Collagen resists stretching.
49. Which of the following has poor regenerative capacity?
    A) Bone
    B) Cartilage ✅
    C) Skin
    D) Areolar tissue
    Explanation: Cartilage lacks blood vessels and heals slowly.
50. Which connective tissue provides flexible support and is found in the nose?
    A) Bone
    B) Areolar
    C) Hyaline cartilage ✅
    D) Elastic cartilage
    Explanation: Hyaline cartilage maintains shape and flexibility in the nose.