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The heart pumps harder and blood pressure rises during a fight-or-flight response. This response is due to

Athyroxine secreted by the thyroid gland.
Badrenaline secreted by the adrenal glands.
Cinsulin secreted by the pancreas.
Doxytocin secreted by the pituitary gland.

Verified Answer :

The correct answer is letter b. adrenaline secreted by the adrenal glands.
The heart pumps harder and blood pressure rises during a fight-or-flight response. This response is due to adrenaline secreted by the adrenal glands. Adrenaline is a substance that is released in the body of a person who is feeling a strong emotion.