Which respiratory volume is excluded while calculating vital capacity?
Expiratory reserve volume
Tidal volume
Residual volume
Inspiratory reserve volume
The Correct Answer is C
A. Expiratory reserve volume: This is included in the calculation of vital capacity (VC = TV + IRV + ERV).
B. Tidal volume: This is also included in vital capacity.
C. Residual volume: The residual volume is the air that remains in the lungs after a forced exhalation and is not part of the vital capacity.
D. Inspiratory reserve volume: This is included in the calculation of vital capacity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Gastrin: Gastrin stimulates gastric acid secretion in the stomach, not pancreatic bicarbonate.
B. Secretin: Secretin stimulates the pancreas to secrete bicarbonate, which neutralizes stomach acid in the duodenum.
C. Somatostatin: Somatostatin inhibits many digestive processes, including the release of digestive hormones, not bicarbonate.
D. Cholecystokinin (CCK): CCK stimulates the release of digestive enzymes from the pancreas but not bicarbonate.
Correct Answer is C
Explanation
A. Blood pumped into a ventricle in one minute: This describes venous return but not cardiac output.
B. Blood pumped into the atria in one minute: Cardiac output measures blood leaving the heart, not entering the atria.
C. Blood pumped by each ventricle in one minute: Cardiac output is the amount of blood ejected by each ventricle in one minute. It is calculated by multiplying stroke volume (the amount of blood ejected per beat) by heart rate.
D. Blood pumped out of an atrium in one minute: This describes atrial function but is not related to the definition of cardiac output.
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