The primary function of the liver in metabolic processes is to regulate and facilitate metabolism while detoxifying various substances. The liver plays a crucial role in processing nutrients absorbed from the digestive tract, converting excess glucose into glycogen for storage, and breaking down fats and proteins. It also synthesizes important proteins like albumin and coagulation factors. Additionally, the liver detoxifies drugs and harmful substances, ensuring they are safely processed. This multifunctional organ is vital for maintaining overall health and metabolic balance within the body.