BIOLOGY 3UU3 Lecture Notes - Lecture 20: Blubber, Atp Synthase, Allometry
4 Apr 2016
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Crh from the pvn in conention with the thyroid axis it is mainly inhibitory feeding: that hormone is stimulating waking and rise in the stress hormone axis and leads to downstream effectors that do induce sleep. The clock seems to kick start this stress hormone axis on its own. And orexin is likely to be upregulated if there is a signal saying that there is an energy shortage going on (glucose sensors)sleep is fasting state (like hibernation) Orexins come up in late sleep and is possible that this system is talking to the waking system in some way. Ghrelin feeding regulator; stimulates the gh and the stress hormone axis. Insulin: reduces the glucose in the bloodstream (go hypoglycemic with ah huge shot of insulin) In hypothalamus, if insulin is high it means that food is being processed. 2 big ways freeding is regulated glucostatic theory (levels of glucose and insulin are regulating feeding behaviour based on carbs/sugars)
