The Executive Branch is comprised of the President and his Cabinet (Secretaries). Secretaries serve as the heads of government departments. Departments, commissions, and agencies are responsible for interpreting the laws passed by Congress and administering government programs created by those laws.he Executive Branch is comprised of the President and his Cabinet (Secretaries). Secretaries serve as the heads of government departments. Departments, commissions, and agencies are responsible for interpreting the laws passed by Congress and administering government programs created by those laws.
The liver also filters harmful substances from the blood. Phagocytic cells in the liver, called Kupffer cells, remove large amounts of debris and bacteria. In addition, the liver stores important vitamins and minerals, including vitamins A, D, K, and B12.
The small intestine is part of the gastrointestinal tract. Chyme from the stomach empties into the small intestine. The small intestine is responsible for most chemical digestion of food, and absorption of nutrients including proteins, lipids (fats) and carbohydrates.Once the small intestine has extracted the nutrients, the remaining waste proceeds to the large intestine before being expelled from the body.he digested food passes into the capillaries and lymphatic vessels in the wall of the intestine. Nutrients such as glucose and amino acids are absorbed into capillaries, while fats are absorbed into the lymph vessels. The ileum is the last section of the small intestine. It mainly absorbs vitamin B12 and bile salts.