What is the normal pH of blood?
7.3 to 7.5
7.6 to 7.8
6.8 to 7.0
7.0 to 7.2
The Correct Answer is A
A. 7.3 to 7.5: Correct (closest choice) -normal arterial blood pH is about 7.35–7.45, so 7.3–7.5 best matches the normal range given.
B. 7.6 to 7.8: this is alkalotic and well above normal physiologic range.
C. 6.8 to 7.0: this is severely acidotic and below normal.
D. 7.0 to 7.2: still acidotic and below the normal physiological range.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B"}
Explanation
Correct answer: Liver
The liver is the large, reddish-brown gland in the right upper quadrant beneath the diaphragm; on the model the organ marked X in the upper abdomen is the liver - the major metabolic and bile-producing organ.
Correct Answer is D
Explanation
A. Cerebrum: the cerebrum is involved in conscious processing; vomiting reflex is coordinated by brainstem centers.
B. Esophagus: the esophagus is a peripheral organ and a route for vomitus, not the control center for the reflex.
C. Pharynx: the pharynx is an anatomical structure involved in expulsion but not the central integrative center for vomiting.
D. Medulla oblongata: the medulla oblongata (brainstem vomiting center and chemoreceptor trigger zone nearby) integrates visceral sensory input and coordinates the vomiting reflex.
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