Relevant for Exams
SSCRAILWAYSTATE-PSCTEACHING
Yawning causes watery eyes due to facial muscle contractions compressing lacrimal glands.
Summary
The article title, "Why does yawning cause watery eyes?", suggests a discussion on a common physiological phenomenon. It would likely explain the mechanism involving strong facial muscle contractions during a yawn, which can compress the lacrimal glands, leading to the expulsion of tears. As a general science topic, it lacks specific current affairs facts, dates, or policy implications, making its direct relevance for competitive exams focused on current events very low.
Key Points
- 1Yawning is an involuntary reflex characterized by deep inhalation and exhalation.
- 2During a yawn, strong contractions occur in facial muscles, particularly around the eyes.
- 3These muscle contractions exert pressure on the lacrimal glands, responsible for tear production.
- 4Compression of the lacrimal glands stimulates the release of tears, causing the eyes to water.
- 5This phenomenon is a normal physiological response and not a current affairs event.
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