ICSE BoardEnglish MediumSTD 10BiologyThe Endocrine System1 Mark
MCQ
Which hormone has an important role when heart fails to function?
✓
Adrenaline
B
Vasopressin
C
Renin
D
Calciferol
✓
Answer
Correct option: A.
Adrenaline
(a) Adrenaline Explanation: Adrenaline, also known as epinephrine, increases the heart rate, elevates blood pressure, and boosts energy supplies. It helps in preparing the body to respond to the acute stress of heart failure by increasing the force of heart contractions, thereby improving the heart's pumping efficiency during such critical situations.
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