Once alkalosis has occurred, which of the following would you expect to happen?
A. increased respiratory rate
B. a plasma pH less than 7.40
C. retention of hydrogen ions by the kidney
D. increased renal reabsorption of bicarbonate ions
E. secretion of hydrogen ions by the kidney
C
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During the process of feather plucking or ________________________________________, birds remove their own feathers due to stress or disease
Fill in the blank(s) with correct word
Ca2+ binding to tropomyosin causes myosin to change shape, physically moving it away from its blocking position
a. True b. False Indicate whether the statement is true or false
Which of the following is an age-related change of the heart that affects function?
a. Stretching of myocardium due to overuse b. Thinning of the valve flaps c. Loss of elasticity of cardiac muscle d. Increase in cardiac reserve e. Fibrosis of cardiac muscle
Which statement about the medullary vertical osmotic gradient is incorrect?
a. Juxtamedullary nephrons create the gradient through countercurrent multiplication. b. Vasa recta supply blood to the medulla while conserving the gradient. c. Collecting tubules of juxtamedullary nephrons, but not cortical nephrons, descend through the gradient before emptying into the renal pelvis. d. The gradient permits excretion of urine of differing concentrations by means of vasopressin-controlled, variable H2O reabsorption from the final tubular segments. e. None of the above statements are incorrect.