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Chief cells (Pepsinogen) - Parietal cells (Gastric acid, Intrinsic factor) - Goblet cells (Mucus)
Endocrine/paracrine ...
Glands can be single epithelial cells, such as the goblet cells that line the intestine. Multicellular glands include the endocrine glands. Many animals have their skin composed of epithelium.
Keywords: Lung structure, Trachea, Bronchioles, Alveoli, Goblet cells, Mucus, Cilia, Breathing, Diaphragm, Alveolar gas exchange, Fick's law
2) Cell Function ...
columnar epithelial cells (the majority). They are responsible for digestion and absorption.
goblet cells, which secrete mucus;
endocrine cells, which secrete a variety of hormones;
Link to Gut Hormones.
Cardiac glands. d. Their ducts. cr. Gland similar to the intestinal glands, with goblet cells. mm. Mucous membrane. m. Muscularis mucosæ. m'. Muscular tissue within the mucous membrane. (See enlarged image) ...
 See also: Vessels, Cells, T cells, Long, Tissue
  
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