In a selective nerve root block, a small needle is placed in the foramen alongside the nerve root and the medication is injected. When the nerves in the foramina are irritated or pinched by a bulging disk, narrowed ânerve canalâ or bone spur, the resulting inflammation can cause pain, numbness, or tingling.
The corpus luteum (Latin for yellow body; plural corpora lutea) is a temporary endocrine structure in female mammals that is involved in the production of relatively high levels of progesterone and moderate levels of estradiol and inhibin A.
The corpus luteum secretes progesterone & other hormones to maintain early pregnancy which maintains the uterine lining during the first months of pregnancy. The corpus luteâ¦um in the ovary results from the release of an egg. It now produces progesterone to maintain the endometrium of the uterine walls. The corpus luteum is a yellow body. Before it released the egg, it was white and referred to as the corpus albicans (white body).