IB 202 Study Guide - Final Guide: Recapitulation Theory, Hypertension, Fetal Hemoglobin
9 Dec 2016
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What did scientists use to divide the geologic record: major fossil transitions mark different time periods. Big 5 mass extinctions (entire groups of animals) Possibly in the middle of the 6th mass extinction: major themes: Which of the following is true about smooth muscle: essential to function of lungs, digestive system, urinary bladder, reproductive system. Pigeons are capable of prolonged flights, based on this what color and fiber type would you expect would characterize their breast meat: dark and slow muscle fibers (fatigue slower) Pink/red intermediate light and fast muscle fibers (fatigue fast) Smooth (intestines, arteries, etc: unstriated, unbranched, no sarcomeres, single nucleus. Cardiac (heart: striated, branched (intercalated discs, has sarcomeres, 1 or 2 nuclei. Skeletal (attached to skeleton: striated, unbranched, has sarcomeres, multinucleate. The bone structure of the tetrapod limb was established during the fin-to-limb transition. Laeoli footprints: trace footsteps to early humans. Mudskipper crunching like motion (walking fish)
