Glands
  Glands are specialized organs or tissues in the body that produce and secrete substances for specific functions. They are essentially factories that create chemical messengers, lubricants, or other vital fluids. Glands are categorized into two main types based on how they release their secretions: 1. Endocrine Glands These are often called "ductless" glands because they secrete their products, which are hormones, directly into the bloodstream. Hormones then travel throughout the body to act on target cells and organs, regulating a wide variety of functions. The endocrine system is a major control system for the body, working alongside the nervous system. Examples of Endocrine Glands:  * Pituitary Gland: Often called the "master gland," it is located at the base of the brain and controls many other endocrine glands.  * Thyroid Gland: Found in the neck, it produces hormones that regulate metabolism and energy.  * Adrenal Glands: Located on top of the kidneys, they p...