Human Biology

Blood is a vital fluid that circulates throughout the body, delivering oxygen and nutrients to tissues, removing waste, and defending against infection. It is essential to life and plays a…

The human spine, or vertebral column, is one of the most essential parts of the body’s structure. It supports the body’s weight, allows for movement and flexibility, and protects the…

Moles — medically known as melanocytic nevi — are common skin growths composed of pigment-producing cells called melanocytes. These small, usually brown or black spots can appear anywhere on the…

Hormones are powerful chemical substances that play a vital role in maintaining balance and coordination across all body systems. Produced by various endocrine glands, hormones regulate everything from metabolism and…

The human immune system is one of the most complex and vital defense systems in the body. It works silently and constantly to protect us from bacteria, viruses, fungi, parasites,…