Histology slides snapshots (first year mbbs)
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Histology slides snapshots (first year mbbs)
- 1. HISTOLOGY SLIDES FIRST YEAR MBBS Rawalpindi Medical College
- 2. SIMPLE SQUAMOUS EPITHELIUM Identification points: • Flattened cells • Surface view: rounded central nucleus • Cross section: elongated nucleus
- 4. SIMPLE CUBOIDAL EPITHELIUM Identification Points: • Cuboidal cells (height almost the same as width) • Central rounded nuclei • Surface view: polygonal
- 7. SIMPLE COLUMNAR EPITHELIUM Identification points: • Single layer of elongated cells • Height of cell > width of cell • Elongated basal nuclei
- 9. SIMPLE COLUMNAR EPITHELIUM WITH GOBLET CELLS Identification Points: • Elongated column shaped cells (height > width) • Elongated basal nuclei • Goblet cells have central and oval nuclei
- 12. STRATIFIED CUBOIDAL EPITHELIUM Identification points: • Multilayered • Basal cells: high cuboidal or low columnar • Surface layer: cuboidal
- 15. STRATIFIED SQUAMOUS NON KERATINIZED EPITHELIUM Identification Points: • Surface squamous flattened cells • No keratin • Middle layer: polygonal cells • Basal layer: high cuboidal/low columnar cells
- 17. PSEUDO STRATIFIED COLUMNAR EPITHELIUM Identification Points: • Single layer of cells • Some cells are columnar; others are cuboidal • Nuclei lying at different levels; give the false appearance of ‘stratified’ epithelium
- 18. EPIDIDYMUS
- 20. TRANSITIONAL EPITHELIUM Identification Points: • Basal layer of cuboidal cells • Next, four layers of polygonal cells • Next, two layers of pear shaped cells • Upper most layer of umbrella shaped cells
- 23. THIN SKIN Identification Points: • Stratified squamous keratinized epithelium • Dense irregular CT beneath • Hair follicles and roots present • Sebaceous glands • Sweat glands
- 25. THICK SKIN Identification Points: • Stratified squamous keratinized epithelium • No hair roots and follicles • Pacinian corpuscles
- 27. DENSE REGULAR C.T Identification Points: • Parallel collagen fibres in the form of bundles • Compressed elongated fibroblasts between the collagen fibres
- 32. MUCOUS ACINI Identification Points: • Pyramidal cells • Apical portion lightly stained • Basal portion darkly stained • Flattened nuclei towards the base
- 35. FIBRO CARTILAGE Identification Points: • No perichondrium • Chondrocytes within lacunae, arranged in rows • Collagen fibres arranged parallel
- 39. ELASTIC CARTILAGE Identification Points: • Perichondrium is present • Elastic fibres in matrix • Basophilic ground substance around lacunae • Chondrocytes in lacunae in the form of isogenous groups
- 43. HYALINE CARTILAGE Identification Points: • Dense Irregular CT (perichondrium) • Chondrocytes within lacunae • Chondrocytes in the form of isogenous groups • Naked eye examination: Bluish white translucent appearance
- 47. ARTICULAR CARTILAGE Identification Points: • Superficial tangential layer • Intermediate transitional layer • Radial zone • Calcified zone
- 50. COMPACT BONE Identification Points: • Haversion Canal • Lamellae • Osteocytes in lacunae • Volkmann’s canal
- 54. SPONGY BONE Identification Points: • Trabeculae • Red marrow • Spikes • Periosteum: outer fibrous, inner cellular
- 58. CARDIAC MUSCLE Identification Points: • Branched • Striated • Intercalated discs
- 62. SMOOTH MUSCLE Identification points: • Non striated appearance • Single central nucleus • Spindle shaped cells
- 64. SKELETAL MUSCLES Identification Points: • Characteristic striated appearance • Peripheral nuclei • Nucleus ovoid in shape
- 68. PERIPHERAL NERVE
- 71. CEREBRUM Identification points: • Pyramidal and non pyramidal cells • Arranged in the form of layers (mention the names) – properly visible only by ‘Nissl staining method’
- 73. CEREBELLUM Identification Points: From outwards to inwards: • Molecular layer with fan shaped dendrites, stellate cells and basket cells (but cell population is very low) • Flask shaped Perkinge cells • Granular layer (deeply basophilic appearance of closely packed nuclei)
- 76. SPINAL CORD Identification Points: • Central canal • Butterfly shaped grey matter • Dorsal median sulcus and ventral median fissure (depending on the portion under examination)
- 80. ELASTIC ARTERY Identification Points: • No distinct outer and inner elastic membranes • Tunica adventitia: merges with CT, contains vasa vasorum • Tunica media: elastic fibres are present in a large amount • Tunica intima: Simple squamous endothelium, subendothelial CT
- 84. MUSCULAR ARTERY Identification Points: • Tunica intima: darkly stained • Tunica media: smooth muscle fibres arranged in circular patterns • Tunica adventitia: collagen (lightly stained); elastic (darkly stained)
- 86. LYMPH NODE Identification Points: • Primary follicles/nodules without germinal centre • Secondary follicles/nodules with germinal centre • Irregular anastomosing ‘medullary cords’ • Subcapsular sinuses
- 90. THYMUS Identification Points: • Medulla is lightly stained • Hassall’s corpuscles in medulla • Epithelioreticular cells; stellate shaped
- 94. SPLEEN Identification Points: • Red pulp: splenic cord and venous sinuses • White pulp: contains lymphatic nodules and germinal centre • Splenic sinuses • No differentiation into cortex and medulla
- 97. TONSIL Identification Points: • Stratified squamous non keratinized epithelium • Crypt • Trabeculae • Lymphatic nodules
- 100. TRACHEA
- 103. LUNG Identification Points: • Alveoli: Type I alveolar cells (simple squamous epithelium); Type II alveolar cells (cuboidal cells) • Respiratory bronchioles: lined by simple cuboidal epithelium
- 106. ADIPOSE TISSUE (WHITE) Identification Points: • Unilocular • Nuclei towards periphery • Spherical
- 109. THE END By Nowera Zafar