Its most prominent occurrence is in the Christian Bible at Matthew 5:18 : For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled (KJV). The quotation uses them as an example of extremely minor details.
Millions of cells form tissues and organs that all talk to each other via messages sent throughout the body. One type of messenger in the body are hormones. Hormones are chemical substances that travel through the blood and throughout the body to control bodily functions. One very important hormone is secretin. Secretin is a hormone that controls parts of the digestive system and maintains water balance in the body. It's released by the duodenum, the upper part of the small intestine. Let's explore the functions of secretin in closer detail.
Answer by Kelly Jameson. Confidence votes 4.3K. The kidney secretes the hormones renin, calcitriol and erythropoietin. Renin-also known as angiotensinogenase, helps to control the body's blood pressure by regulating the balance of fluid and electrolytes in the body. Calcitriol-This is a form of Vitamin D which regulates calcium and phosphorous levels in the body.