Which of the following is a symptom of hypoxia?

Hypoxia, which is a condition characterized by insufficient oxygen reaching the tissues, can manifest through various symptoms. One of the most common signs is headache and dizziness. This occurs because the brain is highly sensitive to oxygen levels, and when these drop, the result can lead to neurological symptoms like headache and dizziness due to reduced cerebral oxygenation. Recognizing these symptoms is crucial, as hypoxia can rapidly worsen and lead to serious health risks if not addressed promptly.

Increased heart rate is indeed a response to various physiological stresses but is more of a general symptom that could relate to numerous conditions beyond hypoxia. Frequent urination and loss of taste do not directly correlate with the primary effects of inadequate oxygen supply. Understanding these distinctions is key in identifying hypoxia correctly.