23. Thyroglobulin is: (a) the major component of colloid inside follicles; (b) another name for thyroid hormone; (c) the major stimulus for release of thyroid hormones; (d) the protein that transports thyroxine in the blood; (e) the protein that transports TSH to the thyroid gland.24.he primary effect of T3 and T4 is to: (a) decrease blood glucose; (b) promote the release of calcitonin; (c) promote heat-generating (metabolic) reactions; (d) stimulate the uptake of iodine by the thyroid. 13.