nervous system
reproductive system
Your gut, otherwise known at the GI system.
In the Skeletal system
Visual.
it is an organ, it doesn't belong to any other organs in the body but it does belong to a system in the body the digestive system.
The bicep is in the muscular body system.
It is a body cavity (or space) on addition to the gut/digestive system.
Respiratory System
The cardiovascular system.
nervous system
reproductive system
The immune system
the digestive system
stomeck gut blader
Your gut, otherwise known at the GI system.
skeletal system :)