AP BIOLOGY

Detailed explanation-1: -The three systems that mainly deal with human movement are the muscular, nervous, and skeletal systems, but actually all eleven systems do work together to coordinate body movements, and, in fact, keep the human body alive.

Detailed explanation-2: -The muscular system is made up of tissues that work with the skeletal system to control movement of the body.

Detailed explanation-3: -The bones’ primary function in this sense is to protect organs from impact. For example, the rib cage helps protect the fragile lungs from impact. Multiple organs in the digestive system, reproductive system, urinary system and endocrine system are all protected by different bones.