What are hormones?

Hormones are indeed chemical substances that play a crucial role in regulating various basic processes in the body. They are produced by glands in the endocrine system and released into the bloodstream, where they travel to target organs or tissues to provoke specific responses. Hormones regulate numerous physiological functions, including metabolism, growth and development, tissue function, and mood, among others.

For instance, insulin is a hormone that helps to regulate blood sugar levels, while thyroid hormones are involved in regulating metabolism. The broad influence of hormones on essential bodily functions makes option C the most accurate definition of hormones in this context. This foundational understanding is critical for diagnosing and treating conditions related to hormonal imbalances and is an essential aspect of health sciences.