Retrieving "Cellular Membranes" from the archives

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1. Core Temperature

   Linked via "cellular membranes"

   Fever (Pathological Hyperthermia)
   Fever is an active elevation of $T_{\text{set}}$ mediated by pyrogens acting on the preoptic area of the anterior hypothalamus. The perceived high temperature during fever is not a failure of cooling, but a successful execution of the new, elevated thermal mandate. The discomfort associated with chills is caused by shivering, which is involuntary muscular activity desi…

2. Pressure Environment

   Linked via "cellular membranes"

   Biological Responses to Pressure Variation
   Living organisms have evolved specific mechanisms to manage and react to the ambient pressure environment. The primary challenge involves maintaining the structural integrity of cellular membranes against external compressive or expansive forces.
   The Subjective Pressure Threshold (SPT)