Abstract: A modular surgical training system for training surgical interventions, includes a training module and a base module. The training module reproduces or has anatomical structures and is capable of holding at least one consumable medium. The base module supplies energy to the training module. The training module and the base module are connected to one another via a combination interface. The base module and the training module include conveying means connected via the combination interface. At least one consumable medium can be conveyed into the anatomical structures by the conveying means. The base module includes a sensor module that measures at least one physical variable. The sensor module and the training module include measurement means connected via the combination interface. The measurement means in the training module includes at least one air-filled connection means.