BIOM 3200 Lecture Notes - Lecture 39: Walter Bradford Cannon, Membrane Transport Protein, Thermostat
23 Mar 2017
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How your body knows where to send your signals and what signals to send to keep you alive. Claude ber(cid:374)ard is (cid:272)o(cid:374)sidered the father of (cid:373)oder(cid:374) physiology. People did(cid:374)"t re(cid:272)og(cid:374)ize that our body stays relatively constant no matter the external factors (environment). These diagrams are worth approximately 5 marks. They are showing the process of increasing and decreasing in our body. These are negative feedback loops: one exception: childbearing (reproductive system) The hypothala(cid:373)us is the (cid:862)ther(cid:373)ostat(cid:863) of the (cid:271)ody: temp falls, thermostat detects a problem (sensory), your body warms (response), you warm up, go back up, thermostat turns off. An example is standing up too fast. Homeostasis has four key things: sensor constant monitoring, these mostly come from the nervous and endocrine system. Integrating centre to coordinate: response system to changes, this is a negative feedback loop. Homeostasis maintained in large part by the endocrine system.
