Which hormones are considered catecholamines?

Catecholamines are a group of hormones that are primarily produced by the adrenal medulla in response to stress and low blood sugar levels, and they play a critical role in the body's fight-or-flight response. The hormones that fall into this category include dopamine, norepinephrine, and epinephrine.

Dopamine serves as both a neurotransmitter and a precursor to norepinephrine and epinephrine. Norepinephrine, also known as noradrenaline, is primarily involved in the body's response to stress, while epinephrine, commonly known as adrenaline, is crucial for preparing the body for rapid response during stressful situations. Together, these hormones regulate numerous physiological processes, including heart rate, blood pressure, and energy production.

The other answer choices contain groups of hormones that serve different functions. For instance, insulin and glucagon are involved in glucose metabolism; cortisol is a steroid hormone that plays a role in metabolism and stress response. Thyroxine, triiodothyronine, and calcitonin are thyroid hormones involved in metabolism and calcium regulation. Finally, estrogen, progesterone, and testosterone are sex hormones that regulate reproductive functions and secondary sexual characteristics. Thus, the answer focuses on the specific group that fits the definition of cate