Adrenal glands
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  • Pituitary gland: Often referred to as the “master gland,” the pituitary gland is located at the base of the brain and secretes hormones that regulate other endocrine glands, as well as growth, reproduction, and metabolism.
  • Endocrine glands secrete hormones directly into the bloodstream rather than through ducts. These hormones then travel through the bloodstream to target organs or tissues where they exert their effects.
  • Ductless Glands: Unlike exocrine glands, endocrine glands lack ducts. Instead, they release hormones directly into the bloodstream.
  • Thyroid gland: The thyroid gland, located in the neck, produces hormones that regulate metabolism, growth, and development.
  • Adrenal glands: These glands, located on top of the kidneys, produce hormones such as cortisol, which helps regulate stress response, and adrenaline, which is involved in the fight-or-flight response.
  • Ovaries and testes: These reproductive organs produce sex hormones such as estrogen and testosterone, which regulate reproductive functions and secondary sexual characteristics.