PSYCH 3F03 Lecture Notes - Starvation Response, Animal Locomotion, Leptin
4 Feb 2014
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Document Summary
Starvation: all organisms face a constant threat of it, survival depends on outlasting periods of deprivation, during starvation non-essential functions are down-regulated, immune system, growth, reproduction. Starvation in bacteria: white cells depict exponential phase, dark is the stationary phase (more dormant devoted to maintaining survival, more recent research when in stationary starvation mode have a high tolerance to antibiotics. Reduction in body temperature: men that experienced a period of starvation for 4 weeks, long term food deprivation, we see body temperature cool over period of starvation as food comes in body temperature rises to normal again. Immune function and efficiency: examines well nourished children and malnourished children, looking at t-lymphocyte cells malnourished children do not have the same amout. Leptin: less body fat will be released if you have less, helps with starvation accumulated fat . Starvation and hyperactivity in rats: given time to just eat whatever they wanted to, open rats given leptin.
