Which of the following is true about systemic blood pH?
A. Acidosis is blood pH above 7.45.
B. Alkalosis is blood pH above 7.45
C. Acidosis is blood pH below 7.35
D. Alkalosis is blood pH below 7.35
E. Both b and c are correct
Answer: E. Both b and c are correct
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In skeletal muscle, when calcium binds to the regulatory protein troponin, it increases the affinity of neighboring troponin molecules for calcium. This is an example of
A. cooperativity. B. allosteric modulation. C. covalent modulation. D. phosphorylation. E. saturation.
The nurse found a preoperative patient out of bed, barefoot, and watching TV while eating breakfast. "We have to cancel your surgery, because you're not NPO," the nurse said. What did the patient do wrong?
A. The patient ate food. B. The patient watched TV. C. The patient walked barefoot. D. The patient left the hospital bed.
The anatomical region found between the lungs that extends from the sternum to the vertebral column and from the first rib to the diaphragm.
a) Epicardium
b) Abdominal cavity
c) Pericardium
d) Mediastinum
e) Thoracic cavity
Who has the highest percentage of water in the body?
A) adult male B) adult female C) infant D) elderly female E) elderly male