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.
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.