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 B
Explanation
A. Vitamin B12 is not synthesized in the skin. It is primarily absorbed through the digestive system from dietary sources such as meat and dairy products.
B. Vitamin D is synthesized in the skin when exposed to sunlight, specifically ultraviolet B (UVB) radiation, which triggers the production of vitamin D3, a precursor to the active form of vitamin D.
C. Vitamin A is obtained from dietary sources, such as fruits and vegetables, and is not synthesized in the skin.
D. Vitamin K is primarily absorbed from food and produced by bacteria in the intestines, not synthesized in the skin.
Correct Answer is A
Explanation
A. The spleen is a key component of the lymphatic system. It filters blood, removes old or damaged blood cells, and plays a role in immune function by storing white blood cells that fight infection.
B. The thyroid gland is an endocrine gland involved in regulating metabolism through the production of thyroid hormones, but it is not part of the lymphatic system.
C. The adrenal glands are also endocrine glands responsible for producing hormones like adrenaline and cortisol. They are not part of the lymphatic system.
D. The pancreas is an organ involved in digestion and blood sugar regulation through insulin production. It does not function within the lymphatic system.
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