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The Endocrine System — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyThe Endocrine System1 Mark
Question
Our hair stands on their ends during fear.
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Answer

During fear adrenal medulla secretes adrenaline which prepares the body to face fear by increasing heart beat, blood pressure and energy production. That is why our hair stands on their during fear.

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