You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Thyroid medullary cells that produce calcitonin develop from: and explain in detail?
Neural crest derivatives from the ultimobranchial body give rise to thyroid medullary C cells. It produces calcitonin. The C cells are interspersed throughout the thyroid gland. ALSO KNOW The ultimobranchial body arises from bilateral ventral swellings of the 4th pharyngeal pouches and gets integrated into the thyroid where it forms the parafollicular cells or C-cells for the production of calcitonin. Ref: Harrison, E-18, P-2911.