In this article we will discuss about the meaning and development of pancreas in human body with the help of suitable diagram. Meaning of Pancreas: The pancreas is both an endocrine as well as exocrine gland. It is devoid of distinct connective tissue capsule and is covered by a fine layer of the loose tissue which passes into the gland [...]
On closer study it is found that pancreatic secretion consists of two phases: 1. Nervous Phase 2. Chemical Phase. 1. Nervous Phase: Pancreatic secretion starts 1—2 minutes after taking food. When the vagi are cut, the secretion is abolished. This proves that the initial phase of pancreatic secretion is a reflex response. The stimulus for this reflex arises in the [...]
The following points highlight the two important hormones secreted by islets cells. The hormones are: 1. Insulin 2. Glucagon. Hormone # 1. Insulin: It is the active principle of the islets cells. It is albumin in nature having a molecular weight of 35,000. It is hydrolyzed by proteolytic enzymes, hence is not effective orally. It is easily destroyed by alkalies [...]