Body zones
- Adrenal Glands: Hormone-Producing Organs Above Kidneys
- Adrenal Cortex: Outer Layer of Adrenal Glands
- Adrenal Medulla: Inner Part of the Adrenal Gland
- Epiphysis: End of Long Bones Growth Plate
- Reproductive Glands: Organs Producing Sex Hormones
- Parathyroid Glands: Hormone Regulators of Calcium
- Pineal Gland: A Small Brain Structure Regulating Sleep
- Pituitary Gland: Master Hormone Regulator of Body
- Anterior Pituitary: Hormone-Producing Gland
- Pituitary Gland: Medial Section
- Posterior Pituitary: Hormone-Secreting Gland
- Pyloric Glands: Digestive Glands in the Stomach
- Salivary Glands: Structures Producing Mouth Moisture
- Thymus: Immune System's Developmental Gland
- Thyroid Gland: Regulates metabolism and hormones
- Thyroid Gland Capsule: Protective Layer of the Thyroid
- Hair: A Keratinous Structure of the Integumentary System
- Head: the top part of the human body containing the brain
- Heart: The Body's Pumping Organ
- Atrioventricular Node: Heart's Electrical Relay Point