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Questions and Answers
What is the function of glandular epithelium?
What is the function of glandular epithelium?
- Conducting nerve impulses
- Synthesizing, storing, and secreting extracellular products (correct)
- Producing hormones
- Generating energy for the body
How do endocrine glands release their secretory products?
How do endocrine glands release their secretory products?
- Through tubular ducts
- Externally
- Into the lymphatic system
- Into the bloodstream (correct)
Which type of glands maintain a connection with the surface epithelium via tubular ducts?
Which type of glands maintain a connection with the surface epithelium via tubular ducts?
- Unicellular glands
- Exocrine glands (correct)
- Multicellular glands
- Endocrine glands
In terms of shape and branch pattern of ducts, what defines simple exocrine glands?
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?
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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