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.
The dictionary definition of afternoon is simply the hours between noon and evening. In the United States, the typical workday ends at 5:00 p.m.
1 Not more than 8 hours in any one day when school is not in session. 2  Not more than 3 hours in any one day, including Fridays, when school is in session.  Between 7 a.m. and 7 p.m. except during the summer (June 1 through Labor Day) when the evening hours are extended to 9 p.m.