What are the various theories regarding the physiological function of yawning as described in the passage?
Understand the Problem
The question is asking for a comprehension of the excerpt related to yawning from a reading passage, specifically focusing on the physiological aspects and theories explained in that passage.
Answer
Yawning may assist lung development, prepare for activity changes, but not increase alertness.
The passage describes several theories regarding the physiological function of yawning: one theory suggests it does not raise alertness or physiological activity; another theory proposes it assists in the physical development of the lungs in fetuses; and a different theory suggests yawning prepares us for a change in activity level.
Answer for screen readers
The passage describes several theories regarding the physiological function of yawning: one theory suggests it does not raise alertness or physiological activity; another theory proposes it assists in the physical development of the lungs in fetuses; and a different theory suggests yawning prepares us for a change in activity level.
More Information
Yawning's function remains debated, with theories addressing both developmental and immediate physiological effects.
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