Illness : Violent coughing can damage the nerves in the olfactory glands‚ a viral infection or respiratory virus may damage the olfactory nerve. When a viral infection like the "flu" involves the cells of the olfactory epithelium‚ the viral particles destroy the normal functioning of the nasal olfactory cells. Also‚ allergy or infection in the nasal cavity. Anosmia can occur transiently in many nasal disorders‚ including sinusitis and nasal blockage from any cause. Born
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Olfactory epithelium Thin sheet of cells which contain neural receptors for olfaction Contains olfactory receptor cells and glia-type support cells that produce mucus Also contains basal cells which give rise to new receptors when needed Olfactory receptor cells Regularly die and replaced in a cycle approximately four to six weeks. Are bipolar: 1. Branch 1 – reaches out to the surface of the epithelium. Cilia extend from the end of this branch into the mucus that covers the epithelium. Molecules
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Although Odontogenisis is a continuous process it is divided into various stages. These stages are Bud stage‚ Cap stage and Bell stage which is followed by root formation and eruption. The basal layer of the ectoderm which is derived from the oral epithelium at the stomadeum undergoes proliferation both on the maxillary and mandibular arches. This however forms a horse shoe like shape of ectodermal tissue‚ which is the dental lamina; the ectomesenchyme which is derived from the neural crest cells surrounds
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Jejunum villi does not contain specialized glands‚ instead contain intestinal crypts between the villi. The villi of the ileum are longer and leaf like compared to the duodenum and the jejunum. The ileum contains lymphatic nodes. In general the epithelium of the small intestine are all specialized with goblet cells‚ paneth cells‚ and entroendocrine cell. 2. What type of epithelial tissue do you expect to see in the sections from the large intestines? The epithelial tissue of the small intestine
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Disturbances of Growth Congenital Anomalies Agnesia: complete absence of an organ. Aplasia: complete failure of development of an organ. It is represented by fibrous tissue. Hypoplasia: Failure of an organ to reach the full adult size. Atrophy Definition: decrease in size and weight of organ or tissue due to decrease in size and / or number of its cells. Atrophic cells are usually replaced by firbous tissue‚ less commonly by fatty tissue. Types of atrophy: Physiologic Atrophy: **Atrophy
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P2‚ Richard Greensmith‚ and Health & Social Care & Health Sciences. P2 Outline the structure of the main tissue of two body organs. Stomach The stomach has three layers of non-striated muscle in its wall and an inner lining of columnar epithelium with goblet cells. The tissue connecting the lining with the muscular coat is areolar tissue. Non striated muscle is a type of muscle tissue‚ which is also called involuntary‚ smooth or plain muscle. It still contains the protein filaments; they
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side effects of radiotherapy and chemotherapy treatment. It is characterized by both inflammation and cell loss in the epithelial barrier. Mucositis is a very complex condition: it develops as a series of dynamic interactions that begin in the epithelium but in a later stage involves other tissue mucosal components like the endothelium‚ extracellular matrix and connective tissue. It is a frequent reason to postpone chemotherapy treatment ultimately leading towards a higher mortality in cancer patients
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1. Our digestive system provides the body a means to transfer nutrition from the external environment into the cellular level in order to sustain life. Salivary glands‚ controlled by the autonomic nervous system‚ are located in the oral cavity. Its main role is to secrete saliva in the oral cavity. There are three pairs of salivary glands. Parotoid savary gland lies under the skin on each side of the mandible. These glands secrete amylase‚ an enzyme that breaks down starches. The parotoid duct implies
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the kidneys structurally modified to aid in filtration? It has tubules and is porous B. What is important functionally about transitional epithelium? It allows for stretching. Transitional epithelium contains cells that are flattened and cells that are cuboidal; hence the name "transitional". You can find transitional epithelium in the bladder and in the first expansion of the ureters as they leave the kidneys (called a calyx). C. What is the function of the ureter?
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coronally from the mucogingival junction * It is continuous with the oral epithelium and is covered with keratinized stratified squamous epithelium * It is firmly attached to the alveolar bone unlike the free or marginal gingiva * It DOES have attachment fibers‚ which is why on the lingual aspect of maxillary teeth the attached gingiva will blend with the attached palatal mucosa Rete pegs * Ridges of epithelium that form the connection between the free or attached gingiva and the underlying
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