Multiple Choice
Some studies theorize that yawning is a reflex triggered by increased blood pH as carbonic acid is produced to expel CO₂ by exhaling. Which structures would be stimulated to induce yawning if this theory is true?
A) Arterial baroreceptors
B) Baroreceptors in the aortic arch
C) Free nerve endings in the blood vessels
D) Aortic bodies and carotid bodies
Correct Answer:
Verified
Correct Answer:
Verified
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