MCELLBI 32 Lecture Notes - Lecture 2: Circadian Rhythm, Cruise Control, Thermostat

• School: Berkeley
• Department: Molecular And Cell Biology
• Course: MCELLBI 32
• Professor: Robin Ball

Document Summary

->36 year old woman collapsed at 10 km mark of a marathon. ->she was in shape and a regular runner, but of shorter distances. ->unresponsive and trembling, pal, dry skin or face, at the hospital she was confused and disoriented. ->electrolyte levels, blood pressure, blood sugar levels, oxygen levels, temperature, hydration. What goes in must out in some form. ->all water that comes out of body must come out of the body. ->must make sure to maintain a form of mass balance. ->body temp is not always the same-->circadian rhythms, sun, cold, weather, however stays within a normal range. ->think about a time when you had a fever. ->try to remember how you felt (hot or cold) and what other symptoms you had related to temperature (sweating, shivering, etc). ->feel weak, cold, may shiver to get warm. No, a fever is the body"s struggle to maintain homeostasis. ->negative feedback helps your car maintain cruise control speed.