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