muscular system & skeletal system.
The two systems that help move the body are the muscular system and the skeletal system. The muscles and ligaments contract and relax to move the bones they are attached to. The term used for the combination of both these systems is the musculoskeletal system
tissues tissues
Force and leverage help to explain how the body works. Force helps the body to move in space as it acts against the air around it. Leverage helps the body stay upright.
If one answer is needed then it is the musculoskeletalsystem.If two answers are required then it the skeletal systemand muscular system.
1-keeps the bones together 2-keeps away from headaches I'm sure this will answer your questions if it doesn't please text me on my yahoo id to is taybah91@yahoo.com
The nervous system and the endocrine system are the two major regulatory systems in the body.
The two coordination systems of the body are the nervous systems and the endocrine sytems, which enable all parts of the body to work together as one.
The Nervous System and the Endocrine System are the two body systems that regulate homeostasis.
Digestive and respitory systems
the respiratory and circulatory systems
there are way more than two, but i think you mean the endocrine and nervous systems
The nervous and endocrine systems are the two systems responsible for controlling behavior.