The list below includes three organ systems that
are directly used when a human runs.
circulatory system
muscular system
skeletal system
which system should also be included in the list?
(1) immune system (3) digestive system
(2) reproductive system (4) nervous system

where is the scientific experiment?

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]