Biomedical Engineering: Bridging Medicine and Technology 1st Edition by Veronique Tran,Mark Saltzman

Exercise 5

Figure 6.16 shows the role of glucagon and insulin in the control of blood glu- cose levels. Convert each of these diagrams to a block control diagram, such as the one shown for blood pressure regulation in Box 6.3. Use the symbols that are defined for stimulation of inhibition (+ and − signs) and the shapes of boxes (square for actions; rounded for physical entities) to differentiate between events in your block diagram. Include as much information from Section 6.4.2 as possible into your block diagram.
1. Estimate the fraction of water (as a percentage) that leaves your body per day in urine, feces, sweat, tears, and expired air. Justify the assumptions that you make in this calculation.