BIOLOGY 3UU3 Lecture Notes - Lecture 3: Shrew, Ubiquitin, Stopwatch
12 Apr 2017
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Document Summary
Microprocessor takes information from body, sorts it and outputs to every function: analogous to the hypothalamus. Bird vs mammal: similar kind of organization hypothalamus is the upper top of the region with a lot of secretory cells connecting to the pituitary, median eminence takes messages from hypothalamus to pituitary. One of the regions you can see clock function being expressed: in the hypo look at gh axis see somatostatin which is the inhibitory hormone for gh. Insects: analogous structures but also have clocks. Paraventricular nucleus (pvn: controls the tress hormone axes (hpa axis) Arcuate nucleus (arc: regulates gh secretion and feeding behaviour (gh axis) Suprachiasmatic nucleus central clock: embedded right at the bottom of the hypothalamus, composed of about 10,000 cells low number for something that outputs an important signal. Anterior hypothalamus gh secretion: luteinizing hormone, follicle stimulating hormone, acth one of the key hormones in the stress hormone axis, thyroid stimulating hormone, melanocyte stimulating hormone.
