Question

Hormones which generate second messengers and promote biochemical responses and physiological
responses in target organs are;
1) Estrogens
2) Catecholamines
3)T3 and T4
4) Progesterone​

Answer 1

Answer:

Option 2) Catecholamines. It is the correct option.

Explanation:

• Hormones that generate second messengers and promote biochemical responses and physiological responses in target organs are Catecholamines.
• They are produced by the brain, adrenal glands, and nerve tissues.
• Adrenaline or epinephrine is a type of catecholamine responsible for the fight-or-flight response. It acts on the muscles, heart, lungs & blood vessels.
• Noradrenaline or norepinephrine increases the heart rate and blood pressure in response to the stress. It is a metabolite of dopamine that mainly acts on the alpha-adrenoreceptors present in the blood vessels.