Organs
- Adrenal glands Produce cortisol, aldosterone, and adrenaline. 🫀 1
- Bladder Stores urine. 🫀 1
- Blood vessels Arteries, veins, and capillaries that carry blood. 🫀 1
- Bone marrow Produces blood and immune cells. 🫀 2
- Bones Rigid structural organs; also house blood-forming marrow. 🫀 2
- Brain Central organ of the nervous system. 🫀 1
- Diaphragm Muscle driving breathing. 🫀 2
- Esophagus Tube conveying food to the stomach. 🫀 1
- Gallbladder Stores and concentrates bile. 🫀 1
- Hair Keratin filaments; thermoregulation and sensation. 🫀 1
- Heart Muscular pump that circulates blood. 🫀 1
- Hypothalamus Links the nervous and endocrine systems; controls homeostasis. 🫀 2
- Joints Articulations enabling movement. 🫀 1
- Kidneys Filter blood; also secrete renin, EPO, and activate vitamin D. 🫀 2
- Large intestine Absorbs water and forms stool; hosts the microbiome. 🫀 1
- Liver Metabolic hub: processes nutrients, detoxifies, makes bile and hormones. 🫀 2
- Lungs Gas-exchange organs. 🫀 1
- Lymph nodes Filter lymph and stage immune responses. 🫀 2
- Nails Keratin plates protecting fingertips and toes. 🫀 1
- Ovaries Produce eggs and estrogen/progesterone. 🫀 2
- Pancreas Secretes digestive enzymes (exocrine) and insulin/glucagon (endocrine). 🫀 2
- Penis Male external organ of reproduction and urination. 🫀 2
- Pineal gland Secretes melatonin, timing the sleep–wake cycle. 🫀 2
- Pituitary gland The 'master gland' directing other endocrine glands. 🫀 2
- Skeletal muscles Voluntary muscles producing movement. 🫀 1
- Skin Barrier organ; also an immune and vitamin-D synthesis site. 🫀 2
- Small intestine Primary site of nutrient absorption. 🫀 1
- Spinal cord Nerve bundle relaying signals between brain and body. 🫀 1
- Spleen Filters blood and supports immune responses. 🫀 2
- Stomach Muscular sac that begins protein digestion. 🫀 1
- Testes Produce sperm and testosterone. 🫀 2
- Thymus Site of T-cell maturation; secretes thymic hormones. 🫀 3
- Thyroid gland Sets metabolic rate via thyroid hormone. 🫀 1
- Trachea Windpipe carrying air to the lungs. 🫀 1
- Ureters Carry urine from kidneys to bladder. 🫀 1
- Uterus Organ of gestation. 🫀 1
- Vagina Female reproductive canal; connects the uterus to the exterior. 🫀 1