An increase of which of the following is a characteristic of respiratory alkalosis?
K+
HCO3
pH
Ca2+
The Correct Answer is C
A. K+ levels typically decrease in respiratory alkalosis due to cellular shifts in potassium as the body compensates for the pH change.
B. HCO3 (bicarbonate) levels initially decrease as a compensatory mechanism to counteract the increased pH, but it is not a direct characteristic of respiratory alkalosis.
C. pH increases in respiratory alkalosis as a result of hyperventilation, which causes excessive exhalation of CO2, leading to a higher blood pH (alkalosis).
D. Ca2+ (calcium) levels can be affected by pH changes, but a decrease in ionized calcium is more commonly seen in alkalosis, not an increase.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The primary follicle is an earlier stage in the development of the ovarian follicle, not the structure that forms after ovulation.
B. The zygote is the result of fertilization, formed when the sperm and egg unite, but it does not form from the follicle after ovulation.
C. The corpus luteum forms from the remains of the follicle after ovulation. It secretes progesterone to support early pregnancy or prepares to degenerate if pregnancy does not occur.
D. The oocyte is the egg cell itself, which is released during ovulation, but it is not the structure that forms from the follicle after ovulation.
Correct Answer is A
Explanation
A. During the expiratory phase of respiration, the diaphragm relaxes and moves upward, causing the chest cavity to decrease in size and forcing air out of the lungs. This is a key part of the breathing process.
B. Oxygen is not taken into the lungs during expiration. Instead, expiration is the process of expelling carbon dioxide from the lungs after oxygen has been absorbed during inspiration.
C. The diaphragm contracts during the inspiratory phase to increase the volume of the lungs and draw air in, not during expiration.
D. Oxygen is not released from the lungs during expiration; rather, carbon dioxide is expelled from the lungs as a waste product of metabolism.
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