BIOL 1080 Chapter Notes -Cyclic Adenosine Monophosphate, Schwann Cell, Microglia
17 Apr 2013
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Document Summary
Biological systems are scaled in dimensions of size/ shape and time. Biomarkers things to measure objectively so that you can track aging overtime. A steady, unbiased and narrow-ranged marker is better. Height loss occurs due to bone degeneration in the vertebrae. Height is a biomarker for osteo, however has significant limitations. Chronobiology the study of timescales and cycles in biology. Biologic(al) rhythms cycles in all zones of biological rhythmicity. Ultradian (less than 24 hours i. e. appetite) Circadian (24 hrs i. e. working shifts or sleeping) Infradian (more than 24 hrs menstrual cycle) The central clock is a brain region called the suprachiasmatic nucleus , which keeps time based on light signals from the retina. Nearly every cell in the body has a subsidiary clock, which coordinates its metabolism with the rest of the body. Filled with living cells, some which build the mineral structure and some that are breaking it down.
