A capsule endoscope or a reception apparatus executes a first light emission motion in which only a light emission module configured to perform light emission in an imaging direction of an imaging module that is performing imaging performs the light emission when no lesioned part is detected and executes a second light emission motion in which a light emission module configured to perform the light emission in a second imaging direction of an imaging module different from an imaging module that is imaging the lesioned part performs the light emission in synchronization with the light emission by a light emission module configured to perform the light emission in a first imaging direction of the imaging module that is imaging the lesioned part when the lesioned part is detected.
