Diarrhea and other lower intestinal fluid losses will contribute to:

Choice A Reason:

Respiratory alkalosis occurs when a person breathes rapidly (hyperventilates), causing a decrease in carbon dioxide (CO2) levels in the blood. This reduction in CO2 leads to an increase in blood pH, resulting in alkalosis. Hyperventilation can be triggered by anxiety, fever, or other conditions that increase respiratory rate.

Choice B Reason:

Metabolic alkalosis is caused by an increase in bicarbonate (HCO3-) or a loss of hydrogen ions (H+), often due to vomiting, diuretic use, or excessive bicarbonate intake. It is not directly related to hyperventilation, which primarily affects CO2 levels rather than bicarbonate levels.

Choice C Reason:

Metabolic acidosis occurs when there is an excess of acid in the body or a loss of bicarbonate, often due to conditions like diabetic ketoacidosis, renal failure, or severe diarrhea. Hyperventilation does not cause metabolic acidosis; instead, it can be a compensatory response to metabolic acidosis to help lower CO2 levels and increase pH.

Choice D Reason:

Respiratory acidosis is caused by hypoventilation, where there is inadequate removal of CO2 from the body, leading to an increase in CO2 levels and a decrease in blood pH. This condition is the opposite of what occurs during hyperventilation, making this choice incorrect.

Choice A Reason:

The exhaustion stage is the final phase of the general adaptation syndrome (GAS). It occurs when the body has been exposed to stress for a prolonged period and can no longer maintain resistance. Symptoms of exhaustion include fatigue, burnout, depression, and decreased stress tolerance. Since the student is experiencing an immediate response to a sudden stressor, this stage does not apply.

Choice B Reason:

Adaptation is not a specific stage in the general adaptation syndrome. The correct stages are alarm, resistance, and exhaustion. Therefore, this choice is incorrect.

Choice C Reason:

This is the correct answer. The alarm stage is the initial phase of the general adaptation syndrome, also known as the “fight-or-flight” response. During this stage, the body reacts to a stressor by activating the sympathetic nervous system, which leads to increased heart rate, rapid breathing, and heightened alertness. The student’s reaction to the near-miss accident fits this description perfectly.

Choice D Reason:

The stage of resistance is the second phase of the general adaptation syndrome. During this stage, the body attempts to adapt to the stressor and return to a state of balance. If the stressor persists, the body remains on high alert, but the initial shock of the alarm stage has passed. Since the student’s response is immediate and acute, it aligns with the alarm stage rather than the resistance stage.