1 Secretion of erythropoietin, which regulates red blood cell production in the bone marrow. 2  Secretion of renin, which is a key part of the reninâangiotensinâaldosterone system. 3  Secretion of the active form of vitamin D (calcitriol) and prostaglandins.
A: A charter school is a public school that is organized and operated according to the terms of the. charter, or contract. A charter school cannot have admissions criteria or charge tuition. A private school is not subject to state school laws, local board of education policies, or State Board of Education rules.
A charter is a document that describes the boundaries, expected results, and resources to be used by a process improvement team. A charter is usually provided by the individual or group who formed the team. Sometimes the process owner or the team members develop a charter.nce the process has been stabilized, the data collected in Step 5 is used again. This time the team plots the individual data points to produce a bar graph called a histogram. This tool is explained in the Basic Tools for Process Improvement.