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Ch. 40-42 Wrap Up • Do you know the importance of these vitamins? B1, folic acid, C, A, D Ch 41 • Do you know the importance of these minerals? Ca, P, S, K, Fe, I Ch 41 • Are you familiar with the insulin/glucagon feedback system? Ch 41 • What is in blood? Ch 42 • What is the Bohr shift? Ch 42 • How does the nervous system relate to the circulatory and respiratory systems? Ch 42 Why do we eat? • 1. Fuel for work • 2. Raw materials for biosynthesis • 3. Essential nutrients – (substances the body cannot make for itself) – There are four types of essential nutrients: • amino acids(8), fatty acids, vitamins(13), minerals 8 Essential Amino Acids what does this mean? • Minerals vs. Vitamins? • Water soluble vs fat soluble • Main minerals and their functions? – S P ONCH Ca K and (Fe, Mg, Na) PANCREAS: makes the hormones Insulin & Glucagon Homeostasis: Blood Glucose (0.1%) Example: Negative Feedback loop to maintain homeostasis Cellular elements of blood: •Pluripotent stem cells RBC production stimulated by: Erythropoetin • What is high altitude training? CO2 + H20 = ?? Bohr Shift because of pH changes due to CO2 • How the Nervous system relates to the circulatory and respiratory systems: Diaphragm Muscles: negative pressure breathing Counter current exchange Counter current flow in fish gills • Better O2 exchange efficiency Ch 43 • LOOKING AHEAD TO NEXT WEEK: • You should spend some quality time with figure 43.14 Lab 10: Measuring cardiovascular fitness • Systolic (large number) – (pump or SQUEEZE) • Diastolic (small number) – (when heart momentarily relaxes) • What is a pulse? • What is peripheral resistance? • How do the above relate to heart disease? – Atherosclerosis, arteriosclerosis, heart attack, stroke