Primary health centres (PHCs) are rural health facilities in India that are usually single physician clinics providing minor surgery facilities. PHCs form the basic level of India's public health system and their key functions include provision of medical care, maternal and child health services, disease prevention and control, and referring patients to higher-level facilities as needed. An ideal PHC layout includes areas for immunization, records, waiting, consultation, emergency care, testing, minor procedures, delivery, and supporting staff functions like toilets and storage. PHCs should be centrally located with adequate infrastructure to serve the local population.