glandular epith
DESCRIPTION
short presentation about Glandular EpitheliumTRANSCRIPT
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Glandular Epithelium
Prepared by : Saleh Abduraboh
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Glandular Epithelium
• Is a special type of epithelium makes up the glands in body.
• Single or Group of cells.• Secrets enzymes, hormones, fats or mucous.• Its secretions are required by other tissue.
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The formation of glands
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Endocrine glands
• Ductless (no duct system).
• Release internally.
• Secret hormones.
• Multicellular with exception Paracrine glands.
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Endocrine glands
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Exocrine glands
• Have duct system.
• Release internally or externally.
• Secret ear-wax, digestive enzymes
and saliva.
• Multicellular or unicellular.
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Exocrine glands secretions
watery waxy fatty cellular serous mucous mixed
sweat Gl Oil Gl Salivary glands External ear Ovary & testis
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Glandular classification
According to: • Presence and absence of ducts.• Number of secretory cells.• Nature of secretion.• Mode of secretion.• Shape of secretory units & Arrangement of
Duct (branching in exocrine structure).
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1 .Presence and absence of ducts
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Salivary gland (Exocrine)
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Thyroid gland (Endocrine)
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Pancreas gland (Mixed)
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2 .Number of secretory cells
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First: Unicellular Exocrine (ex: Goblet cells)
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First: Unicellular Endocrine (ex: Enteroendocrine cells)
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Second: MulticellularExocrine (ex: Endometrial glands)
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Second: MulticellularEndocrine (ex: Thyroid gland)
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3 .Nature of secretion
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4 .Mode of secretion
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5 .Shape of secretory units & Arrangement of Duct
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Gland as a compact organ
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Thank you for being attentive
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Presented by group B students: Name No.
Saleh Abduraboh 14
Moath Abdulkariem 15
Omnia Mohammed 16
Mohammed Sofian 17