C cells are present in: (A) Thyroid gland, (B) Parathyroid gland, (C) Pituitary gland, (D) Thymus
Answer is A. Cells of the ultimobranchial body give rise to the parafollicular or C cells of the thyroid gland. These cells secrete calcitonin, a hormone involved in regulation of the calcium level in the blood.Reference: Krishna Garg Histology; 5th edition; Page no: 230; 232