01:119:116 Lecture Notes - Lecture 24: Neural Tube Defect, Stunted Growth, Vitamin A
25 Jul 2017
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Diet and nutritional needs: c/c nutritional needs. Regulation of appetite and consumption: seq, iov appetite and consumption regulation. Regulation of digestion: c/c, seq, iov digestion regulation. Regulation of e storage: seq, iov excess calories. Proper nutrition = right amount, right mixture. 3 things we need: (1) chemical e. Measured in calories (capital c): 1 cal = heat required to raise 1 kg h2o by 1 c. The energy we need to get out of our food. Provided by carbs, proteins, lipids (mostly starch for humans primary source of cals) Lipids are the most e rich ~9 cal/g (4 cal/g for carbs and proteins) Lipids are a much more efficient storage medium (2) organic building blocks. 2 types of organic precursors required: (1) source of carbon in order to make large macromolecules (glucose, etc. ) (2) source of nitrogen also required to make macromolecules (3) essential nutrients. Things that cannot be made must be ingested.
