nervous system
reproductive system
In the Skeletal system
Visual.
ligaments work with the skeletal and the muscular systems of the body
i think kideny;
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.
Respiratory System
The cardiovascular system.
nervous system
reproductive system
The immune system
the digestive system
skeletal system :)
Circulatory system
The male reproductive system.