If by "What systems" you mean what organs are related to respiratory, lungs is probably the answer you were looking for.=D.
they are related because they are
the mouth
It is one of systems in body and it is related to breathing .
These 2 systems are not related. They do not interact with each other.
Respiratory
The pharynx is part of both the digestive and respiratory systems.
respiratory system endocrine system
1. Respiratory system 2. Cardiovascular system
The pharynx is part of both the digestive and respiratory systems.
noice
respiratory
Respiratory System Respiratory System