A common symptom of pharyngitis is swelling of the anterior cervi.pdf

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A common symptom of pharyngitis is swelling of the anterior cervical lymph nodes. Why might lymph nodes swell in the presence of an infection? What else may cause swollen lymph nodes? Explain why conditions that cause destruction of B lymphocytes and/or T lymphocytes cause malfunctioning of both the specific and nonspecific immune responses. Solution Lymph node swelling occurs in infection because they dikter lymph whuch circulates in the body through lymphatic system . Now whenever any foreign antigen enters into the body, rhe number of white blood cells increase in response to that antigen. They attack bacteria, virus, whoever enters into the body . And while this fighting occurs body makes more of these cells taht causes swelling. Lymph nodes directly come into contact with lot of germs inside the body, so they can get swollen even then. The other causes could be lymphoma tumour, cancer, tuberculosis, any problem with immune system, leukemia etc Inflammatory response occurs when tissues are attacked by pathogens such as virus, bacteria etc. The damaged cells release chemicals such as bradykinin, prostaglandin, histamine, which cause vessels to leak fluid into tissues causing swelling.

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