Overview. Boston Gear's spur gears, which are designed to transmit motion and power between parallel shafts, are the most economical gears in the power transmission industry.We offer both 14 1/2Â° and 20Â° PA (pressure angle), involute, and full-depth system gears. Transmits motion and power efficiently between parallel shafts. 2  Our 20Â° PA spur gear has a high load-carrying capacity for enhanced performance. 3  The 14 1/2Â° PA spur gear offers smooth, quiet operation. 4  Spur gears are manufactured in Delrin, non-metallic, brass, steel, and cast iron materials for maximum versatility.
ACTH is a segment of a much larger glycoprotein prohormone molecule called proopiomelanocortin (POMC). POMC is synthesized by the corticotrophs of the anterior pituitary, which constitute about 10 percent of the gland.
ACTH is made in the pituitary gland in response to the release of another hormone, called corticotropin-releasing hormone (CRH), by the hypothalamus. In turn, the adrenal glands then make a hormone called cortisol, which helps your body manage stress. A problem with the adrenal glands or pituitary gland. 2  A high level of ACTH and a low level of cortisol (or low ACTH and high cortisol levels) could be caused by a problem with the adrenal glands. 3  Low levels of ACTH and cortisol could be caused by a problem with the pituitary gland. 4  Overproduction of ACTH.