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Questions and Answers
What is the function of glandular epithelium?
How do endocrine glands release their secretory products?
Which type of glands maintain a connection with the surface epithelium via tubular ducts?
In terms of shape and branch pattern of ducts, what defines simple exocrine glands?
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What characterizes the nature of secretion in exocrine glands known as serous?
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Study Notes
Glandular Epithelium
- Formed by cells specialized as secretory cells that are epithelial in origin
- Responsible for synthesizing, storing, and secreting extracellular products
Classification of Glandular Epithelium
- Exocrine glands: maintain connection with the surface epithelium via tubular ducts
- Endocrine glands: ductless, release secretory products (hormones) into the bloodstream
Characteristics of Exocrine Glands
- Unicellular glands: single-celled glands
- Multicellular glands: composed of multiple cells
Classification of Exocrine Glands
- Based on shape and branch pattern of ducts:
- Simple: unbranched ducts
- Compound: branched ducts
- Based on mode of secretion:
- Merocrine: secretion without loss of cell content
- Apocrine: secretion with loss of cell membrane
- Holocrine: secretion with complete cell disintegration
- Based on nature of secretion:
- Serous: watery secretion
- Mucous: thick, protective secretion
- Mixed (Seromucous): combination of serous and mucous secretions
Structure of Exocrine Glands
- Shape of secretory portions:
- Tubular: elongated, tube-like structure
- Acinar: rounded and saclike structure
- Tubuloacinar: mixed structure with both tubular and acinar features
- Duct portion:
- Simple ducts: not branched
- Compound ducts: with two or more branches
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Description
Test your knowledge on glandular epithelium and its classification. Learn about the structure and function of exocrine and endocrine glands, as well as the types of exocrine glands such as unicellular and multicellular glands.
