1. Phylum
    2. 1. Classification of Animals
    2. Protozoa
    3. Porifera
    4. Coelenterata
    5. Platyhelminthes
    6. Nemathelminthes
    7. Annelida
    8. Earthworm
    9. Arthropoda
    10. Cockroach
    11. Mosquito
    12. Honey bee and Silk moth
    13. Mollusca
    14. Echinodermata
    15. Hemichordata
    16. Chordata
    17. Pisces
    18. Amphibia
    19. Frog
    20. Reptile
    21. Aves
    22. Mammalia
    23. Rabbit bone
  2. Animal Behaviour and Adaptation
    3. 24. Animal behaviour
    25. Animal adaptation
    26. Migration
  3. Developmental Biology
    4. 27. Development of Animals
    28. Development of Frog
  4. Human Biology
    5. 29. Tissues
    30. Sense organs
    31. Digestive system
    32. Circulatory system
    33. Respiratory system
    34. Nervous system
    35. Endocrine system
    36. Reproductive system
    37. Excretory system
    38. Skeletal system
    39. Basic concept of Immunology
    40. Human diseases
  5. Evolutionary Biology
    6. 41. Origin of Life
    42. Organic Evolution
    43. Theories of Evolution
    44. Evolution of Human beings
    45. Horse Evolution
Human Biology
29. Tissues
EPITHELIAL TISSUE
Glandular epithelium
▢ Based on Mode of secretion:
Holocrine
Apocrine
Eccrine/ Merocrine
Mode of secretion
By destruction of whole cell
By desruction of parts of apical cytoplasm
  • •
    Without cellular destruction
  • •
    By exocytosis from secretory cell into ducts
Examples
  1. Sebaceous glands of skin
  2. Tarsal gland/ Meibomian gland
  1. Mammary gland (Areolar region)
  2. Apocrine sweat gland (Found in axilla and groins)
  1. Most of endocrine and digestive glands
  2. Eccrine sweat gland (Found in all body surface)
▢ Based on Secretory unit:
Tubular gland
Alveolar/ Acinar gland
Compound tubulo-alveolar gland
▢ Simple tubular gland:
  1. Crypts of Lieberkuhn
▢ Simple branched tubular gland:
  1. Sweat gland
▢ Compound tubular glands:
  1. Bulbourethral gland
  2. Liver
▢ Simple alveolar gland:
  1. Seminal vesicle of mammals
  2. Cutaneous glands of frog
▢ Simple branched alveolar gland:
  1. Sebaceous gland
▢ Compound alveolar gland:
  1. Sublingual
  2. Submandibular
  1. Parotic gland
  2. Pancreas
▢ Based on Cellularity:
❖ Unicellular:
  1. Goblet cell
❖ Multicellular:
  1. Majority of gland
Covering epithelium
Simple epithelium
Simple squamous epithelium
Simple cuboidal epithelium
Simple columar epithelium
Pseudo-stratified epithelium
Stratified epithelium
CONNECTIVE TISSUE
Connective tissue proper
Loose connective tissue
Areolar connective tissue
Adipose connective tissue
Dense connective tissue
Fibrous connective tissue
White fibrous connective tissue
Tendon
Ligaments
Yellow elastic connective tissue
Reticular connective tissue
Pigmented connective tissue
Fluid connective tissue
Blood
▢ Blood plasma:
▢ Blood cells:
❖ Red Blood Cells (RBCs)/ Erythrocytes:
❖ White Blood Cells (WBCs)/ Leucocytes:
Granulocytes
Agranulocytes
  1. With Cytoplasmic granules.
  2. They have lobed nucleus.
  1. Without cytoplasmic granules.
  2. They don't have lobed nucleus.
Eosinophils
Basophils
Neutrophils
Monocytes
Lymphocytes
Plasma cell
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2 nucleus-lobe
2-3 nucleus-lobe
3-5 nucleus-lobe
Largest WBC
Smallest WBC
Phagocytic
Non-phagocytic
Phagocytic
Phagocytic
Involved in Body defence mechanism
Involved in Allergic reaction
Secrete histamine and Serotonin
First line of defense against infection.
Form Macrophages in tissues.
◉ Granulocytes:
◈ Eosinophils:
◈ Basophils:
◈ Neutrophils:
◉ Agranulocytes:
◈ Monocytes:
■ Macrophages in tissues:
  1. Brain → Microglia
  2. Skin → Dendritic cells/ Langerhans' cells
  3. Connective tissue → Histiocytes
  4. Cartilage → Condrocytes
  5. Bone → Osteocytes
  6. Thymus → Hassal's corpuscles
  7. Lungs → Dust cells
  8. Liver → Kuffer cells
  9. Spleen → Sinusoidal cells
  10. Kidney → Messangial cells
◈ Lymphocytes:
■ T-lymphocytes:
■ B-lymphocytes:
◈ Plasma cells:
❖ Platelets/ Thrombocytes:
Lymph
Skeletal connective tissue
Bone
Cartilage
MUSCULAR TISSUE
Skeletal muscle
Smooth muscle
Cardiac muscle
NERVOUS TISSUE
Neurons
Image 1
Apolar neuron
Unipolar neuron
Pseudo-unipolar neuron
Bipolar neuron
Multipolar neuron
Image 1
Location
  1. Hydra
  2. Some Amacrine cells of Retina
  3. Chromaffin cells
  1. Vertebrate embryo
  2. Trigeminal nerve nucleus
a. Dorsal root ganglia of Spinal cord i.e, most sensory nerve
  1. Retina (Eye)
  2. Cochlea (Ear)
  3. Olfactory area (Nose)
  1. General (Brain)
  2. Autonomic ganglia
  3. Purkinje cells
Fea
Glial cells
Astrocytes
Oligodendrocytes
Microglia
Ependymal cells
Satellite cells
Schwan cells
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Location
CNS
PNS
Functions
    Astrocytes
    Oligodendrocytes
    Microglia
    Ependymal cells
    Satellite cells
    Schwan cells
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