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Control and Co-ordination — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination2 Marks
Question
Name the hormone secreted by the heart. What is its function?
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Answer

  1. The atrial wall of the heart secrete a peptide hormone known as atrial natriuretic factor (ANF).
  2. When the blood pressure increases, ANF hormone is secreted.
  3. It causes dilation of the blood vessels.
  4. Blood then can easily flow with lesser resistance and hence BP decreases.

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