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Explain the structure and function of epithelial tissue. Luo, Y. Myoepithelial carcinoma of major salivary glands: Analysis of population-based clinicopathologic and prognostic features. Quizzes Take the Multiple Choice and True/False Quizzes. Includes structures of the respiratory system that are directly involved in gas exchange. Art labeling activity anatomy of the urinary tract and bladder. In tubular glands, the ducts can be straight or coiled, whereas tubes that form pockets are alveolar (acinar), such as the exocrine portion of the pancreas. The secretions are enclosed in vesicles that move to the apical surface of the cell where the contents are released by exocytosis. Pulmonary surfactant.

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Link to FREE Online Anatomy Course Enter without an account if you do not want to sign up. The alveolar wall consists of three major cell types: type I alveolar cells, type II alveolar cells, and alveolar macrophages. These epithelia are active in the secretion and absorptions of molecules. Dialysis Animation Short animation explaining kidney dialysis. 325. n General process line by line addition of the parent company amount subsidiary. The root is the region of the nose located between the eyebrows. The primary bronchi enter the lungs at the hilum, a concave region where blood vessels, lymphatic vessels, and nerves also enter the lungs. In contrast to the conducting zone, the respiratory zone includes structures that are directly involved in gas exchange. Art labeling activity anatomy of the urinary tract free. New gland cells differentiate from cells in the surrounding tissue to replace those lost by secretion. Most glands consist of groups of epithelial cells. Smooth muscle located in the fibroelastic membrane of the trachea. Quizzes Scroll down to the "Renal System" section and click on "Kidney Function. " The conducting zone of the respiratory system includes the organs and structures not directly involved in gas exchange. Mixed exocrine glands contain both serous and mucous glands and release both types of secretions.

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This connection is why colds often lead to ear infections. The endothelium of the surrounding capillaries, together with the alveolar epithelium, forms the respiratory membrane. The nasopharynx is flanked by the conchae of the nasal cavity, and it serves only as an airway. Urinary system quizzes and labeled diagrams: want to learn more about it? Urinary System my lab and mastering .pdf - 11/28/2020 Urinary System Urinary System Due: 11:59pm on Wednesday, December 2, 2020 You will receive no | Course Hero. In addition, excessive mucus secretion can occur, which further contributes to airway occlusion (Figure 22. The esophagus borders the trachea posteriorly. The trachea is formed by 16 to 20 stacked, C-shaped pieces of hyaline cartilage that are connected by dense connective tissue. The ciliated epithelium of your airway forms a mucociliary escalator that sweeps particles of dust and pathogens trapped in the secreted mucous toward the throat.

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Urinary Animations Scroll down the "Sort Animation list" box, and under Body Systems, click on "Urinary System. " Urine Production Animation. Urinary Systems Game: Enter your name and play the Super Nurse game. Similar to the nasal cavity and nasopharynx, this specialized epithelium produces mucus to trap debris and pathogens as they enter the trachea. The first region is the nasopharynx, which is connected to the posterior nasal cavity and functions as an airway. Urinary system quizzes and labeled diagrams. Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e. g., in search results, to enrich docs, and more. Anteriorly, the laryngopharynx opens into the larynx, whereas posteriorly, it enters the esophagus. A type II alveolar cell is interspersed among the type I cells and secretes pulmonary surfactant, a substance composed of phospholipids and proteins that reduces the surface tension of the alveoli. Licensee MDPI, Basel, Switzerland. The inferior conchae are separate bones, whereas the superior and middle conchae are portions of the ethmoid bone.
The mesothelium is a simple squamous epithelium that forms the surface layer of the serous membrane that lines body cavities and internal organs. These junctions influence the shape and folding of the epithelial tissue.