Chief cells ( stomuch) secreate pepsinogen , a inactivae enzyme. And in small intestine it converted into pepsin ,active form. Chief cell also present in parathyroid gland release pth harmone regulates level of calcium, magnesium, HPO4 ions in blood.
In the United States, afternoon is generally the time between noon and 5:00 p.m., and evening is considered anything after 5:00 p.m. There is no set allocation for afternoon and evening, however.
There are two main ways to show the time: 24 Hour Clock or AM/PM: 24 Hour Clock: the time is shown as how many hours and minutes since midnight.AM/PM (or 12 Hour Clock): the day is split into: 1  the 12 Hours running from Midnight to Noon (the AM hours), and.2  the other 12 Hours running from Noon to Midnight (the PM hours).M/PM (or 12 Hour Clock): the day is split into: 1  the 12 Hours running from Midnight to Noon (the AM hours), and. 2  the other 12 Hours running from Noon to Midnight (the PM hours).