How are hormones distributed throughout the body?

• A. Through lymphatic fluid
• B. Through blood
• C. Through nerve impulses
• D. Through interstitial fluid

Answer: (B)

Hormones are distributed throughout the body primarily through the bloodstream. The endocrine system releases hormones directly into the circulatory system, which then transports these chemical messengers to target organs and tissues. This method allows for a rapid and efficient way to regulate various physiological processes, including metabolism, growth, and mood, among others.

In contrast, while lymphatic fluid plays a role in transporting certain substances and immune cells, it is not the main route for hormone distribution. Additionally, nerve impulses are a method of communication within the nervous system rather than a mechanism for distributing hormones, which are secreted by glands and travel through the blood. Interstitial fluid, which surrounds cells, helps in the exchange of nutrients and waste but does not serve as the primary vehicle for hormonal distribution. Therefore, the bloodstream is the essential pathway for hormones to reach their target sites throughout the body.