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histology-1.pptx

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The document provides descriptions and identifying features of various histology slides including the adrenal gland, appendix, arterioles, bone, cerebellum, dorsal root ganglion, elastic artery, cartilage, fallopian tube, gallbladder, hyaline cartilage, kidney, lymph node, mammary gland, ovary, palatine tonsils, pancreas, pituitary, placenta, retina, salivary glands, sensory ganglion, skeletal muscle, smooth muscle, spleen, pylorus, peripheral nerve, testis, skin, thymus, thyroid, tongue, trachea, ureter, urinary bladder, retina, adipose tissue, cerebrum, duodenum, fundus,

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HISTOLOGY SLIDES BYD.S.VIVEK
ADRENAL GLAND Identifying feature 1. Capsule 2. Cortex Zona glomerulosa-inverted U shaped cells Zona fasiculata-cells arranged in straigt columns Zona reticularis- cords of cells forms a network 3. Medulla Groups of cells separated by sinusoids Sympathetic neurons are also present
APPENDIX Narrowest part of GIT 1. Mucosa-simple columnar epithelium with goblet cells @ Lamina propria- scatterd lymphocytes with aggregated nodules (may extending to next layer) 1. Submucosa- variable no. of lymphatic nodules 2. Muscularis externa 3. Serosa Longitudinal muscle coat is complete and taenia coli is not present
ARTERIOLES Muscular arteriole can be distingushed from true artery -small diameter -dont have internal elastic lamina -Few layers of smooth muscle in their media Terminal arteriole Same layer as that of artery but are thin in composition
L.S BONE Compact Bone 1. Haversian system- a ring like osteon 2. Haversian canal 3. Concenteric lamellae around the canal 4. Lacunae- spaces in between the lamellae 5. Canaliculi- radiate from lacunae , contain cytoplasmic process of osteocytes 6. Interstistial lamellae 7. Circumferential lamellae 8. volkmanns canal- interconnecting adjacent haversian canal
CEREBELLUM Section shows leaf like folia Cortex is covered by pia matter ,blood vessles are present beneath the pia matter Outer grey matter- 3 layers from out to in 1. Molecular layer-few nuclei and appears pale 2. Purkinje cell layer- single layer of big flasked shaped pink neurons 3. Granular layer-dark blue and pressence of abundant nuclei White matter- axons as pink fibers Nuclei of neuroglia is present in both grey and white mtter
DORSAL ROOT GANGLION 1.Pseudounipolar neuron 2.Nerve fibre 3.Satellite cells *Each neuron has a vesicular nucleus with prominent nucleolus *The neuron is surrounded by ringof satellite cells
ELASTIC ARTERY 1.Tunica intima -Endothelium(well developed) -Subendothelial connective tissue -Internal elastic lamina(first layer of elastic fibre) 2.Tunica media -Many elastic fibre ,some smooth muscle 3.Tunica adventia -collagen fibre *vasa vesorum (not seen)
ELASTIC CARTILAGE 1.Lacuna with chondrocyte 2.Cartilage matrix with elastic fibres 3.Perichondrium -outer fibrous layer -inner cellular layer
FALLOPIAN TUBE 1.Mucous membrane with numerous branching folds *ciliated columnar epithelium 2.Inner circular muscle layer 3.Outer longitudinal muscle layer 4.Serosa
FIBROCARTILAGE -Collagen fibres -Row of chondrocyte present between them *chondrocyte are rounded in cartilage but fibrocyte are flattend in tendon * Perichondrium absent 1.Chondrocyte 2.Ground tissue with collagen fibres
GALL BLADDER 1.Mucosa -columnar cell with striated border -highly folded like villi 2.Lamina propria -Crypts may b found 3.Fibromuscular coat 4.Serosa *ABSENT STRUCTURE -villi -goblet cells -sbmucosa -proper muscularis externa
HYALINE CARTILAGE 1.Chondrocyte 2.Cell nest -isogenous group of chondrocyte 3.Homogenous basophilic matrix -tentorial matrix -inter tentorial matrix 4.Perichondrium -outer fibrous -inner cellular *chondrocyte increase in size from periphery to center
KIDNEY 1.Capsule 2.Cortex +Renal corpuscle (various shape circular ) +PCT[more in number] -dark pink stained -lumen small -cuboidal epithelium with brush border +DCT -lighter stained -simple cuboidal epithelium 3.Medulla -collecting duct+henle loop [light stained elongated extend into cortex form medullary rays] Duct lined by simple cuboidal but loop lined by squamous epithelium 4.Blood vessels
LARGE VEIN 1.Tunica intima 2.Tunica media -large ammount of collagen -less muscle and elastic fibres 3.Tunica adventitia -thicker then media -in large vein it also contains considerable musle and ekastic fibres to provide elasticity *wall can be compressed easily
LYMPH NODE 1.Capsule[sends in trabeculae] 2.Subcapsular space 3.Cortex -germinal center light stained -zone of dense lymphocytes 4.Medulla -lymphocytes are arranged in the form of anastomosing cords
MAMMARY GLAND 1.Lobule 2.Connective tissue 3.Alveoli -lined by cuboidal epithelium 4.Duct 5.Adipose tissue
OVARY 1.Cuboidal epithelium [germinal epithelium] 2.Tunica albuginea 3.Cortex -follicles 4.Medulla -blood vessels 5.Primordial follicle 6.Primary oocyte 7.Zona pellucida 8.Cumulus oophoricus 9.Discs proligerus 10.Antrum follicle 11.Membrana granulosa 12.Capsule -Theca intrna -Theca extrna 13.stroma
PALATINE TONSILS 1.Stratified squamous epithelium 2.Lymphatic nodule 3.Diffuse lyphoid tissue 4.crypts
PANCREAS 1.Serous acini -Basophilic -lumen is small 2.Islet of langerhans -pale staining -arranged in groups 3.Duct -intralobular -interlobular *duct lined by cuboidal epithlium
PITUITARY 1.Anterior pituitary -Acidophils[alpha cells,pink stained] -Basophilis[beta cells,bluish cytoplasm] --chromophobe -sinusoids 2.Pars intermedia 3.Pars posterior
PLACENTA 1.Intervillous space 2.Syncytiotrophoblast 3.Cytotrophoblast 4.Macrophage 5.Fibroblast 6.Fetal blood vessels 7.Maternal blood 8.Floating tertiary villi
RETINA 1.Sclera 2.Choroid 3.Pigment cell layer 4.Layer of rods and cones 5.External limiting 6.Outer nuclear layer 7.Outer plexiform layer 8.Inner nuclear layer 9.Inner plexiform layer 10.Layer of ganglion cells 11.Layer ofoptic nerve fibres 12.Inner limiting
SALIVARY MUCOUS GLAND
SALIVARY SEROUS GLAND 1.Interlobular connective tissue septum 2.Serous acini -darkly stained 3.Intralobular duct -intercalated duct -striated duct 4.Interlobular duct 5.Blood vessels 6.Adipose tissue
SENSORY GANGLION 1.Pseudounipolar neurons -arranged in groups seprated by bundle of nerve fibre 2.Nerve fibre 3.Satellite cell -surround the neuron 4.Nucleus 5.Nucleolus
SKELETAL MUSCLE 1.Peripherlly placed nucleus 2.Muscle fibres with transverse striations 3connective tissue
SMALL VEIN 1.Tunica intima 2.Tunica media 3.Tunica adventitia 4.Collagen fibre 5.Smooth muscles *all three layers are not clear in small vein
SMOOTH MUSCLE 1.Spindle shaped 2.Nucleus [elongated and centrally placed] 3.No striations
SPLEEN 1.Capsule sends trabeculae 2.Red pulp -diffusely distributed lymphocyte -numerous sinusoids 3.White pulp -dense aggregation of lymphocyte -arranged in cords surrounding arteriole 4.Cord [ resemble lymphatic nodule of lymph node except it has an arteriole] -grminal center -zone of densly packed lymphocyte
PYLORUS 1.Mucosa -gastric pits occupy 2/3 of mucosa -columnar epithelium 2.Lamina propria -pyloric gland [lined by mucous secreting cells 3.Muscularis mucosae 4.Submucosa 5.Muscularis externa *villi seen are not villi these are absent
T.S OF PERIPHERAL NERVE 1.Perineurium -holds the nerve fibre bundle 2.Endoneurium -connective tissue arround individual fibre 3.Myelin sheath
TESTIS 1.Tunica albuginea 2.Seminiferous tubule[several layers from outward to inward] -sustentacular cells -spermatogonia -spermatocytes -spermatids -spermatozoa 4.Interstial cells of leydig 5.Blood vessels
THICK SKIN 1.Keratin 2.Epidermis [stratified squamous] -stratum corneum is very thick -stratum lucidum -stratum granulosum -stratum spinosum -stratum basale 3.Dermis -sweat gland are present *hair follicle and sebaceous glands are absent 4.Adipocyte *present at sole and palm
THIN SKIN 1.Keratin 2.Epidermis [stratum corneum is thin ] -keratinised squamous epithelium 3.Dermis -sebaceous gland -hair follicle -sweat gland -arrecter pili *all are present in dermis 4.Adipose tissue
THYMUS 1.Lobule [sperated by connective tissue] 2.Cortex -darkly stained -densely packed lymphocyte 3.Medulla -lightly stained -lymphocyte are diffuse -continuous with other lobule -HASSALLS CORPUSCLE [rounded pink stained masses
THYROID 1.Follicle lined by cuboidal epithelium 2.Pink stained colloidal material -contain thyroglobulin 3.Parofollicular cells -attached with follicle 4.Connective tissue with blood vessels and parafolicular cells
TONGUE 1.Stratified squamous epithelium 2.Lamina propria 3.Skeletal muscle 4.Serous gland 5.Mucous gland 6.Adipose tissue 7.Smooth ventral surface 8.Papillae -Filiform[pointed] -Fungiform [mushroom shape] -Circumvallate [dome shape]
TRACHEA 1.Mucosa -Pseudostratified cilliated epithelium -goblet cells -lamina propria 3.Submucosa -Mucous gland -Serous gland 4.Hyalinecartilage
URETER 1.Lumen -star shape 2.Mucosa -transitional epithelium -lamina propria 3.Muscle coat -inner longitudinal -outercircular *reverse of gut 4.Adventitia -blood vessels
URINARY BLADDER 1.Transitional epithelium [mucosa] 2.Lamina propria 3.Smooth muscle -inner longitudinal -middle circular -outer longitudinal 4.Serosa [peritoneum]
ADIPOSE TISSUE 1.Empty cells -as fat get dissolve durin making 2.Cytoplasm as pink rim 3.Nucleus flat,lies at one side -eccentric
CEREBRUM 1.Molecular layer -few neuron & many cell process 2.External granular layer -densely packed nuclei 3.Pyramidal cell layer -large triangular cells 4.Internal granular layer 5.Ganglionkic layer 6.Multiform layer White matter contain axon piamater pyramidal cell size increase from outer layer to inner layer
DUODENUM 1.Columnar epithelium with goblet cells 2.Lamina propria 3.Muscularis mucosa 4.Submucosa with brunners gland 5.Muscularis externa 6.Brunner gland 7.Villi 8.Crypts of lieberkuhn
FUNDUS 1.Mucosa -columnar eoithelium -gastric pits occupy 村 2.Lamina propria -gastric glands occupy 他 3.Muscularis mucosae 4.Gastric glands -chief cell [peptic cells] blue stained -oxyentic cells[parietal cells] pink stained 5.Submucosa 6.Muscularis externa -inner oblique -middle circular -outer longitudinal 7.Serosa
ILEUM 1.Columnar epithelium mucosa -goblet cells 2.Lamina propria -peyer s patches[lymphatic aggregation 3.Muscularis mucosae 4.Submucosa 5.Muscularis externa 6.Serosa 7.Crypts of lieberkuhn *villi are absent over peyer patches
LARGE INTESTINE 1.Mucosa -columnar epithelium -crypts with goblet cells -lamina propria with lymphatic nodule -muscularis mucosae 2.Submucosa 3.Muscularis externa -inner circular *outer longitudinal in the form of TAENIA COLI 4.Serosa *ABSENCE OF VILLI
LIVER 1.LOBULE -central vein [small rounded space in center -radiating cords of hepatocytes 2.Portal triad -branch of portal vein -branch of hepatic artery -interlobular duct Cords are seprated by sinusoids Sinusoids are lined by endothelium and KUPFFERS CELLS
LUNGS 1.Pleura -mesothelium resting on connective tissue 2.Intrapulmonary bronchus -pseudostratified ciliated columnar epithelium -goblet cells -smmoth muscle -cartilage -glands 3.Bronchiole -line by cuboidal and columnar 4.Respiratory bronchiole 5.Alveolar duct 6.Atrium 7.Glands 8.Alveoli -honey comb like appearance
OESOPHAGUS 1.Mucosa -non keratinaised stratified epithelium -lamina propria -muscularis interna 2.Submucosa 3.Muscularis externa -inner circular -outer longitudinal 4.Adventitia *mucous acini
UMBLICAL ARTERY
UMBLICAL VEIN
UMBLICAL CORD

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histology-1.pptx

  • 2. ADRENAL GLAND Identifying feature 1. Capsule 2. Cortex Zona glomerulosa-inverted U shaped cells Zona fasiculata-cells arranged in straigt columns Zona reticularis- cords of cells forms a network 3. Medulla Groups of cells separated by sinusoids Sympathetic neurons are also present
  • 3. APPENDIX Narrowest part of GIT 1. Mucosa-simple columnar epithelium with goblet cells @ Lamina propria- scatterd lymphocytes with aggregated nodules (may extending to next layer) 1. Submucosa- variable no. of lymphatic nodules 2. Muscularis externa 3. Serosa Longitudinal muscle coat is complete and taenia coli is not present
  • 4. ARTERIOLES Muscular arteriole can be distingushed from true artery -small diameter -dont have internal elastic lamina -Few layers of smooth muscle in their media Terminal arteriole Same layer as that of artery but are thin in composition
  • 5. L.S BONE Compact Bone 1. Haversian system- a ring like osteon 2. Haversian canal 3. Concenteric lamellae around the canal 4. Lacunae- spaces in between the lamellae 5. Canaliculi- radiate from lacunae , contain cytoplasmic process of osteocytes 6. Interstistial lamellae 7. Circumferential lamellae 8. volkmanns canal- interconnecting adjacent haversian canal
  • 6. CEREBELLUM Section shows leaf like folia Cortex is covered by pia matter ,blood vessles are present beneath the pia matter Outer grey matter- 3 layers from out to in 1. Molecular layer-few nuclei and appears pale 2. Purkinje cell layer- single layer of big flasked shaped pink neurons 3. Granular layer-dark blue and pressence of abundant nuclei White matter- axons as pink fibers Nuclei of neuroglia is present in both grey and white mtter
  • 7. DORSAL ROOT GANGLION 1.Pseudounipolar neuron 2.Nerve fibre 3.Satellite cells *Each neuron has a vesicular nucleus with prominent nucleolus *The neuron is surrounded by ringof satellite cells
  • 8. ELASTIC ARTERY 1.Tunica intima -Endothelium(well developed) -Subendothelial connective tissue -Internal elastic lamina(first layer of elastic fibre) 2.Tunica media -Many elastic fibre ,some smooth muscle 3.Tunica adventia -collagen fibre *vasa vesorum (not seen)
  • 9. ELASTIC CARTILAGE 1.Lacuna with chondrocyte 2.Cartilage matrix with elastic fibres 3.Perichondrium -outer fibrous layer -inner cellular layer
  • 10. FALLOPIAN TUBE 1.Mucous membrane with numerous branching folds *ciliated columnar epithelium 2.Inner circular muscle layer 3.Outer longitudinal muscle layer 4.Serosa
  • 11. FIBROCARTILAGE -Collagen fibres -Row of chondrocyte present between them *chondrocyte are rounded in cartilage but fibrocyte are flattend in tendon * Perichondrium absent 1.Chondrocyte 2.Ground tissue with collagen fibres
  • 12. GALL BLADDER 1.Mucosa -columnar cell with striated border -highly folded like villi 2.Lamina propria -Crypts may b found 3.Fibromuscular coat 4.Serosa *ABSENT STRUCTURE -villi -goblet cells -sbmucosa -proper muscularis externa
  • 13. HYALINE CARTILAGE 1.Chondrocyte 2.Cell nest -isogenous group of chondrocyte 3.Homogenous basophilic matrix -tentorial matrix -inter tentorial matrix 4.Perichondrium -outer fibrous -inner cellular *chondrocyte increase in size from periphery to center
  • 14. KIDNEY 1.Capsule 2.Cortex +Renal corpuscle (various shape circular ) +PCT[more in number] -dark pink stained -lumen small -cuboidal epithelium with brush border +DCT -lighter stained -simple cuboidal epithelium 3.Medulla -collecting duct+henle loop [light stained elongated extend into cortex form medullary rays] Duct lined by simple cuboidal but loop lined by squamous epithelium 4.Blood vessels
  • 15. LARGE VEIN 1.Tunica intima 2.Tunica media -large ammount of collagen -less muscle and elastic fibres 3.Tunica adventitia -thicker then media -in large vein it also contains considerable musle and ekastic fibres to provide elasticity *wall can be compressed easily
  • 16. LYMPH NODE 1.Capsule[sends in trabeculae] 2.Subcapsular space 3.Cortex -germinal center light stained -zone of dense lymphocytes 4.Medulla -lymphocytes are arranged in the form of anastomosing cords
  • 17. MAMMARY GLAND 1.Lobule 2.Connective tissue 3.Alveoli -lined by cuboidal epithelium 4.Duct 5.Adipose tissue
  • 18. OVARY 1.Cuboidal epithelium [germinal epithelium] 2.Tunica albuginea 3.Cortex -follicles 4.Medulla -blood vessels 5.Primordial follicle 6.Primary oocyte 7.Zona pellucida 8.Cumulus oophoricus 9.Discs proligerus 10.Antrum follicle 11.Membrana granulosa 12.Capsule -Theca intrna -Theca extrna 13.stroma
  • 19. PALATINE TONSILS 1.Stratified squamous epithelium 2.Lymphatic nodule 3.Diffuse lyphoid tissue 4.crypts
  • 20. PANCREAS 1.Serous acini -Basophilic -lumen is small 2.Islet of langerhans -pale staining -arranged in groups 3.Duct -intralobular -interlobular *duct lined by cuboidal epithlium
  • 21. PITUITARY 1.Anterior pituitary -Acidophils[alpha cells,pink stained] -Basophilis[beta cells,bluish cytoplasm] --chromophobe -sinusoids 2.Pars intermedia 3.Pars posterior
  • 23. RETINA 1.Sclera 2.Choroid 3.Pigment cell layer 4.Layer of rods and cones 5.External limiting 6.Outer nuclear layer 7.Outer plexiform layer 8.Inner nuclear layer 9.Inner plexiform layer 10.Layer of ganglion cells 11.Layer ofoptic nerve fibres 12.Inner limiting
  • 25. SALIVARY SEROUS GLAND 1.Interlobular connective tissue septum 2.Serous acini -darkly stained 3.Intralobular duct -intercalated duct -striated duct 4.Interlobular duct 5.Blood vessels 6.Adipose tissue
  • 26. SENSORY GANGLION 1.Pseudounipolar neurons -arranged in groups seprated by bundle of nerve fibre 2.Nerve fibre 3.Satellite cell -surround the neuron 4.Nucleus 5.Nucleolus
  • 27. SKELETAL MUSCLE 1.Peripherlly placed nucleus 2.Muscle fibres with transverse striations 3connective tissue
  • 28. SMALL VEIN 1.Tunica intima 2.Tunica media 3.Tunica adventitia 4.Collagen fibre 5.Smooth muscles *all three layers are not clear in small vein
  • 29. SMOOTH MUSCLE 1.Spindle shaped 2.Nucleus [elongated and centrally placed] 3.No striations
  • 30. SPLEEN 1.Capsule sends trabeculae 2.Red pulp -diffusely distributed lymphocyte -numerous sinusoids 3.White pulp -dense aggregation of lymphocyte -arranged in cords surrounding arteriole 4.Cord [ resemble lymphatic nodule of lymph node except it has an arteriole] -grminal center -zone of densly packed lymphocyte
  • 31. PYLORUS 1.Mucosa -gastric pits occupy 2/3 of mucosa -columnar epithelium 2.Lamina propria -pyloric gland [lined by mucous secreting cells 3.Muscularis mucosae 4.Submucosa 5.Muscularis externa *villi seen are not villi these are absent
  • 32. T.S OF PERIPHERAL NERVE 1.Perineurium -holds the nerve fibre bundle 2.Endoneurium -connective tissue arround individual fibre 3.Myelin sheath
  • 33. TESTIS 1.Tunica albuginea 2.Seminiferous tubule[several layers from outward to inward] -sustentacular cells -spermatogonia -spermatocytes -spermatids -spermatozoa 4.Interstial cells of leydig 5.Blood vessels
  • 34. THICK SKIN 1.Keratin 2.Epidermis [stratified squamous] -stratum corneum is very thick -stratum lucidum -stratum granulosum -stratum spinosum -stratum basale 3.Dermis -sweat gland are present *hair follicle and sebaceous glands are absent 4.Adipocyte *present at sole and palm
  • 35. THIN SKIN 1.Keratin 2.Epidermis [stratum corneum is thin ] -keratinised squamous epithelium 3.Dermis -sebaceous gland -hair follicle -sweat gland -arrecter pili *all are present in dermis 4.Adipose tissue
  • 36. THYMUS 1.Lobule [sperated by connective tissue] 2.Cortex -darkly stained -densely packed lymphocyte 3.Medulla -lightly stained -lymphocyte are diffuse -continuous with other lobule -HASSALLS CORPUSCLE [rounded pink stained masses
  • 37. THYROID 1.Follicle lined by cuboidal epithelium 2.Pink stained colloidal material -contain thyroglobulin 3.Parofollicular cells -attached with follicle 4.Connective tissue with blood vessels and parafolicular cells
  • 38. TONGUE 1.Stratified squamous epithelium 2.Lamina propria 3.Skeletal muscle 4.Serous gland 5.Mucous gland 6.Adipose tissue 7.Smooth ventral surface 8.Papillae -Filiform[pointed] -Fungiform [mushroom shape] -Circumvallate [dome shape]
  • 39. TRACHEA 1.Mucosa -Pseudostratified cilliated epithelium -goblet cells -lamina propria 3.Submucosa -Mucous gland -Serous gland 4.Hyalinecartilage
  • 40. URETER 1.Lumen -star shape 2.Mucosa -transitional epithelium -lamina propria 3.Muscle coat -inner longitudinal -outercircular *reverse of gut 4.Adventitia -blood vessels
  • 41. URINARY BLADDER 1.Transitional epithelium [mucosa] 2.Lamina propria 3.Smooth muscle -inner longitudinal -middle circular -outer longitudinal 4.Serosa [peritoneum]
  • 42. ADIPOSE TISSUE 1.Empty cells -as fat get dissolve durin making 2.Cytoplasm as pink rim 3.Nucleus flat,lies at one side -eccentric
  • 43. CEREBRUM 1.Molecular layer -few neuron & many cell process 2.External granular layer -densely packed nuclei 3.Pyramidal cell layer -large triangular cells 4.Internal granular layer 5.Ganglionkic layer 6.Multiform layer White matter contain axon piamater pyramidal cell size increase from outer layer to inner layer
  • 44. DUODENUM 1.Columnar epithelium with goblet cells 2.Lamina propria 3.Muscularis mucosa 4.Submucosa with brunners gland 5.Muscularis externa 6.Brunner gland 7.Villi 8.Crypts of lieberkuhn
  • 45. FUNDUS 1.Mucosa -columnar eoithelium -gastric pits occupy 村 2.Lamina propria -gastric glands occupy 他 3.Muscularis mucosae 4.Gastric glands -chief cell [peptic cells] blue stained -oxyentic cells[parietal cells] pink stained 5.Submucosa 6.Muscularis externa -inner oblique -middle circular -outer longitudinal 7.Serosa
  • 46. ILEUM 1.Columnar epithelium mucosa -goblet cells 2.Lamina propria -peyer s patches[lymphatic aggregation 3.Muscularis mucosae 4.Submucosa 5.Muscularis externa 6.Serosa 7.Crypts of lieberkuhn *villi are absent over peyer patches
  • 47. LARGE INTESTINE 1.Mucosa -columnar epithelium -crypts with goblet cells -lamina propria with lymphatic nodule -muscularis mucosae 2.Submucosa 3.Muscularis externa -inner circular *outer longitudinal in the form of TAENIA COLI 4.Serosa *ABSENCE OF VILLI
  • 48. LIVER 1.LOBULE -central vein [small rounded space in center -radiating cords of hepatocytes 2.Portal triad -branch of portal vein -branch of hepatic artery -interlobular duct Cords are seprated by sinusoids Sinusoids are lined by endothelium and KUPFFERS CELLS
  • 49. LUNGS 1.Pleura -mesothelium resting on connective tissue 2.Intrapulmonary bronchus -pseudostratified ciliated columnar epithelium -goblet cells -smmoth muscle -cartilage -glands 3.Bronchiole -line by cuboidal and columnar 4.Respiratory bronchiole 5.Alveolar duct 6.Atrium 7.Glands 8.Alveoli -honey comb like appearance
  • 50. OESOPHAGUS 1.Mucosa -non keratinaised stratified epithelium -lamina propria -muscularis interna 2.Submucosa 3.Muscularis externa -inner circular -outer longitudinal 4.Adventitia *mucous acini