The document discusses the roles of regulatory affairs (RA), chemistry, manufacturing and control (CMC), and post-approval regulatory affairs in the pharmaceutical industry, focusing on securing regulatory approvals and ensuring product safety. It outlines the importance of CMC regulatory submissions, defines combination products, and explains the FDA's classification and regulation of medical devices. Furthermore, it addresses the integral processes for pre-market and post-market regulation, highlighting the responsibilities of various FDA centers and the need for compliance in manufacturing and reporting.