What is the primary function of adrenaline in response to stress?
Increases digestion rate
Increases heart rate
Increases insulin secretion
Decreases oxygen supply
Answer and Solution
Answer
B. Increases heart rate
Solution:
Adrenaline increases heart rate to supply more oxygen and energy to muscles during stressful situations, making option 2 correct. Options 1, 3, and 4 are incorrect as they do not describe the direct effect of adrenaline.
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