QuestionJune 1, 2025

Which factor would stimulate the respiratory center? Select all that apply. One, some, or all responses may be correct. Changes in pH Increased O_(2) levels Changes in position Decreased O_(2) levels Increased carbon dioxide (CO_(2)) levels Air leaving the lungs

Which factor would stimulate the respiratory center? Select all that apply. One, some, or all responses may be correct. Changes in pH Increased O_(2) levels Changes in position Decreased O_(2) levels Increased carbon dioxide (CO_(2)) levels Air leaving the lungs
Which factor would stimulate the respiratory center? Select all that apply. One, some, or all responses may be correct. Changes in pH Increased O_(2) levels Changes in position Decreased O_(2) levels Increased carbon dioxide (CO_(2)) levels Air leaving the lungs

Solution
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Answer

Changes in pH, Decreased O_{2} levels, Increased carbon dioxide (CO_{2}) levels Explanation 1. Identify factors affecting the respiratory center The respiratory center is primarily stimulated by changes in blood chemistry, particularly CO_{2} and O_{2} levels, and pH. 2. Analyze each option - **Changes in pH**: A decrease in pH (acidosis) stimulates the respiratory center to increase breathing rate. - **Increased O_{2} levels**: Typically does not stimulate the respiratory center; it may actually reduce stimulation. - **Changes in position**: Generally do not directly stimulate the respiratory center. - **Decreased O_{2} levels**: Stimulates the respiratory center to increase breathing rate. - **Increased CO_{2} levels**: Strongly stimulates the respiratory center to increase breathing rate. - **Air leaving the lungs**: Does not directly stimulate the respiratory center.

Explanation

1. Identify factors affecting the respiratory center<br /> The respiratory center is primarily stimulated by changes in blood chemistry, particularly $CO_{2}$ and $O_{2}$ levels, and pH.<br /><br />2. Analyze each option<br /> - **Changes in pH**: A decrease in pH (acidosis) stimulates the respiratory center to increase breathing rate.<br /> - **Increased $O_{2}$ levels**: Typically does not stimulate the respiratory center; it may actually reduce stimulation.<br /> - **Changes in position**: Generally do not directly stimulate the respiratory center.<br /> - **Decreased $O_{2}$ levels**: Stimulates the respiratory center to increase breathing rate.<br /> - **Increased $CO_{2}$ levels**: Strongly stimulates the respiratory center to increase breathing rate.<br /> - **Air leaving the lungs**: Does not directly stimulate the respiratory center.
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