Answer:
The answer is all three/ I, II, III
Step-by-step explanation:
The study island explanation is:
The systems of the human body work together to sustain life. For example, the integumentary system, the muscular system, and the skeletal system all work together to protect the body and allow movement.
Movement is an important function of the human body. The skin of the integumentary system covers and protects the muscles of the muscular system and the bones of the skeletal system. The muscles relax and contract to move the bones of the skeletal system to allow the human body to move.
The bones and the skin are also important for protecting the human body from injury. Skin protects the body from the external environment by providing a barrier between the inside of the body and the outside world. The bones, on the other hand, protect the internal organs of the body by providing a hard shield against outside forces.
I, II, and III are all true about the interactions between or among the integumentary, muscular, and skeletal systems of the human body.