HB+Respiratory+System+Notes

1/28/08 Class Notes
 * nerves are bundles of lots of nerves cells
 * spinal cord is the biggest nerve
 * brain is the central nervous system, essential to body communication
 * different cells connect to brain different ways (maybe three)
 * positive charged neuron cant transfer as well or something

1/29/08 Class Notes
 * 400,000,000 alveoli
 * look like bunches of grapes
 * heart: 2 atria, 2 ventricles, 4 chambers
 * heart: right side of blood receives blue blood
 * heart: left ventricle and left atrium are on the right looking at someone elses heart