The board of directors is responsible for setting the company's strategic direction, overseeing its implementation, and ensuring the company's compliance with legal and regulatory requirements. The board does not manage the day-to-day operations of the company, which is the responsibility of the company's management team.

The typical size of a board of directors is 7-9 members. This number is large enough to provide a diversity of perspectives and expertise, but small enough to allow for effective decision-making.

The chairman of the board is responsible for presiding over board meetings, setting the agenda, and ensuring that the board operates in an orderly and efficient manner. The chairman does not set the company's strategic direction, oversee the company's day-to-day operations, or represent the interests of the company's shareholders. These are the responsibilities of the entire board of directors.

The CEO is responsible for managing the day-to-day operations of the company, implementing the board of directors' strategic direction, and ensuring the company's compliance with legal and regulatory requirements. The CEO does not set the company's strategic direction or represent the interests of the company's shareholders. These are the responsibilities of the board of directors.

Independent directors are not affiliated with the company's management or major shareholders. They are appointed to the board to provide a diversity of perspectives and expertise, and to ensure that the board is acting in the best interests of the company and its shareholders.

The Sarbanes-Oxley Act is a law that regulates the accounting and financial reporting of public companies. It was enacted in 2002 in response to a number of corporate scandals, including the Enron and WorldCom scandals.

The Sarbanes-Oxley Act has a number of purposes, including protecting investors from fraud and abuse, improving the accuracy and reliability of financial reporting, and strengthening corporate governance.

The Dodd-Frank Wall Street Reform and Consumer Protection Act is a law that regulates the financial industry. It was enacted in 2010 in response to the 2008 financial crisis.

The Dodd-Frank Wall Street Reform and Consumer Protection Act has a number of purposes, including protecting consumers from financial abuse, preventing future financial crises, and strengthening the financial system.

The SEC has a number of roles in corporate governance, including regulating the securities markets, enforcing the Sarbanes-Oxley Act, and overseeing the corporate governance of public companies.

The PCAOB is responsible for overseeing the audits of public companies. It sets auditing standards, inspects accounting firms, and investigates accounting fraud.

The corporate secretary has a number of roles in corporate governance, including taking minutes of board meetings, maintaining the company's corporate records, and advising the board of directors on legal and regulatory matters.

The general counsel has a number of roles in corporate governance, including advising the company on legal matters, representing the company in legal proceedings, and ensuring the company's compliance with legal and regulatory requirements.

The internal audit function has a number of roles in corporate governance, including providing independent assurance on the company's financial statements, reviewing the company's internal controls, and investigating fraud and abuse.

The risk management function has a number of roles in corporate governance, including identifying and assessing the company's risks, developing and implementing strategies to mitigate the company's risks, and monitoring the company's risks and reporting on them to the board of directors.