To help protect itself Exercise 2: Microscopic Structure of Mucous Membranes Draw and describe the structures observed for the following slides: Stratification ciliated columnar epithelium of the trachea Single layer of cells of differing heights, some not reaching the apical surface, nuclei located at different levels give the appearance of a multilayered (stratified) tissue. Mucous secreting goblet cells are common in this tissue. There are both ciliated and non-ciliated types.
Stratified exogamous epithelium (non-scrutinized) of the esophagi Distinguished by multiple layers of cells with nuclei distributed throughout, basal cells are cuboids or columnar in shape, are metabolically active and have a high rate of mitosis Simple columnar epithelium (duodenum) of the mall intestine Single layer of column shaped cells with either a round or oval shaped nucleus, unicellular glands that secrete mucous are common in this tissue, microbial extensions of the plasma membrane of the apical surface, are present in the small intestine A.
Compare and contrast the roles of the three mucous membranes.
Mucous membranes are composed of epithelial cells lying on top of loose connective tissues. Serous membranes are epithelial cells that are attached to a small amount of areola connective tissues. These membranes are unique because they occur in two layers. Synopsis membranes are composed entirely f connective tissue and are found lining the cavities around the joints. These membranes help provide a smooth surface for the movement of joints B. What is the role of mucous in the body?
The secreted mucous traps the pathogens in the body preventing any further activities of disease. The pathogens get expelled when the mucous is expelled Exercise 3: Structure of Synopsis Membranes A. What is the function of the synopsis membrane? Lines the joint cavity and produces synopsis fluid which helps the bones move and prevent them from rubbing together. B. Rheumatoid arthritis results from immune response in the synopsis membrane. What effect does this have on the ability of this membrane to carry out its functions?
It lowers the amount of synopsis fluid secreted so joints arena able to move as freely C. Complete Data Table 1. Data Table 1 Membrane Tissue Types (epithelial/connective) Common Location Functions Coetaneous stratified exogamous epithelium skin protective Mucous epithelium lines passageways and chambers Reduce friction and facial absorption Serous areola tissue internal sub divisions of ventral cavity Minimize friction Synopsis connective lines joint cavity Allows for lubrication and movement Conclusion: Do some research on pleurisy, peritonitis and pericardium.
What are these conditions and how do they affect homeostasis in the body? Pleurisy- Occurs when the double membrane of that lines your chest cavity and surrounds each lung become inflamed. It affects homeostasis in the body because it alters breathing function. Peritonitis- Bacterial or fungal infection of the peritoneum (silk like membrane that lines the inner abdominal wall and covers the organs within the abdomen). Left entreated it can lead to severe, potentially, life threatening infection throughout your body and causing disruption in homeostasis.
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