Pregnancy and Hormones. One of the most common causes of excessive swelling in the feet is pregnancy. During pregnancy a woman's body is filled with more blood than usual, which can cause veins to swell or leak blood into the tissues, which leads to swelling, especially in the feet. An imbalance in hormones can also lead to feet swelling.
The amount of testosterone synthesized is regulated by the hypothalamicâpituitaryâtesticular axis (see figure to the right). When testosterone levels are low, gonadotropin-releasing hormone (GnRH) is released by the hypothalamus, which in turn stimulates the pituitary gland to release FSH and LH.These latter two hormones stimulate the testis to synthesize testosterone.he amount of testosterone synthesized is regulated by the hypothalamicâpituitaryâtesticular axis (see figure to the right). When testosterone levels are low, gonadotropin-releasing hormone (GnRH) is released by the hypothalamus, which in turn stimulates the pituitary gland to release FSH and LH.
TSH stimulated the thyroid gland to release thyroid hormone, which is a generic name for a pair of two hormones, triiodothryronine(T3) thyroxine(T4). T4 is much more (98%) prevalent in blood that T3 (2%). Hormone cascade pathways usually involve the mechanism of negative feedback. In the above-mentioned example, the thyroid hormone itself carries the negative feedback by inhibiting TSH release from the anterior pituitary gland, and TRH from the hypothalamus.