Ключевые слова: 3d, activity, anatomical, anatomy, atomic, atoms, bone, calcium, colorful, disease, endocrine, endocrinology, gland, glands, healthcare, hormone, human, hypercalcaemia, hyperparathyroidism, hypocalcaemia, hypoparathyroidism, illness, illustration, medical, medicine, model, molecular, molecule, osteoclast, parathormone, parathyrin, parathyroid, pth, remodeling, research, secreted, serum, stress, structure, thyroid,