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Physio I Revu Where does gas exchange occur? The alveoli What is the formula for cardiac output? CO = SV x HR What hormone increases blood glucose? glucagon Where does most protein digestion occur? The stomach Where is the center for thermoregulation? The hypothalamus In what form is most CO2 transported by the blood? Bicarbonate ion HCO3- What happens during the P wave of an ECG? Atrial depolarization What blood vessels have valves? veins What happens to internal thoracic pressure during inhalation? It decreases What molecule carries oxygen? hemoglobin What cells make insulin? Beta cells in pancreas What chemical do parietal cells release? HCl What happens to capillaries in the skin when we get cold? vasoconstrict What is normal systolic pressure for a healthy young adult? 110 mm Hg What do we call the maximum volume of oxygen that a person can take in at maximal excercise? VO2 max or Max VO2 How does sweating cool the body? It evaporates What mechanism is used on most homeostatic controls? Negative feedback loop What is the name of the volume of air we inhale and exhale at rest? Tidal volume What drives gas exchange in the lungs? diffusion What enzyme breaks down starch in the mouth? Salivary amylase What is the technical name for the process of inhalation and exhalation? ventilation What does bile do to fats? emulsification