Question

which system coordinates voluntary and involuntary actions in the body? *
muscular system
nervous system
skeletal system
endocrine system

Explanation:

The Muscular System is for movement via muscle contraction. The Skeletal System provides structure and support. The Endocrine System regulates via hormones. The Nervous System (central and peripheral) sends signals to coordinate both voluntary (e.g., moving a limb) and involuntary (e.g., heart rate, digestion) actions.

Answer:

B. Nervous System