Which of the following physiological changes in blood chemistry is an indication of acidosis?
Decrease in hydrogen ions
Decrease in carbon dioxide
Decrease in ketones
Decrease in bicarbonate ions
The Correct Answer is D
a. Decrease in hydrogen ions: A decrease in hydrogen ions (H+) would indicate a condition of alkalosis, not acidosis.
b. Decrease in carbon dioxide: A decrease in carbon dioxide (CO2) usually leads to respiratory alkalosis because CO2 is acidic in nature.
c. Decrease in ketones: Ketones are acidic compounds, and their decrease is not associated with acidosis. In fact, an increase in ketones can cause ketoacidosis.
d. Decrease in bicarbonate ions: Bicarbonate (HCO3-) is a base, and a decrease in its concentration can lead to metabolic acidosis, as it reduces the buffering capacity of the blood against excess H+.
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Related Questions
Correct Answer is D
Explanation
a. Parathyroid: Parathyroid glands regulate calcium levels in the blood, not testosterone.
b. Posterior pituitary: The posterior pituitary gland stores and releases hormones produced in the hypothalamus, not testosterone.
c. Thyroid: The thyroid gland produces thyroid hormones, not testosterone.
d. Anterior pituitary: The anterior pituitary gland produces gonadotropin-releasing hormone (GnRH), which stimulates the testes to produce testosterone in males.
Correct Answer is B
Explanation
a: Cerebellum - The cerebellum is responsible for coordination and balance but is not where the medulla, pons, and midbrain are located.
b. Brainstem-The brainstem is composed of the medulla oblongata, pons, and midbrain. It regulates many basic physiological functions such as heart rate, breathing, and sleep.
c: Ventricles - The ventricles are fluid-filled cavities within the brain, not regions containing the medulla, pons, and midbrain.
d: Choroid plexus - The choroid plexus produces cerebrospinal fluid (CSF) within the ventricles of the brain, but it is not where the medulla, pons, and midbrain are located.
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