The lymphatic system forms part of the -circulatory and immune systems,
-respiratory system
-circulatory system
-immune and respiratory systems,

circulatory and immune systems

Explanation:

Protects your body against foreign invaders: The lymphatic system is part of the immune system. 

answer; training;

it hurts at first because " the cherry is broken" which is a thin layer of skin that breaks so the first time girls have sex it hurts and it bleeds but after the first time it does hurt again because the skin that ia torn does not break again/ grow back.