BIOG 1440 Lecture Notes - Lecture 10: Vasodilation, Biophysics, Arteriole
1 Mar 2017
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Lecture 10 (wed, march 3) (this is the first lecture that will be included in prelim 2) No assignment for discussion this week will have review for prelim. Focus: do another review section on monday evening. What was discussed in class (presented on the slides) Reading material & mastering will help understand the material. Preclass quizzes are a good model for the type of questions. How do organisms transport chemicals & nutrients to all cells: circulation, vasculature (plant & animal) Many organisms rely on diffusion to transport nutrients. For example: algae just uses diffusion to distribute nutrients and absorb nutrients from the environment. Fick"s law of diffusion: (flux (j) in mol m -2 s -2 ) Rate of diffusion is inversely proportional to distance. Movement is based on pressure gradients (to make the liquid move) Circulatory system requires: vasculature ( plumbing system , source of pressure. Have phloem and xylem that are separate system.
