Select your answer:
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Tissues of The Body › ViewWhich muscle type is voluntary?
A. cardiac
B. skeletal
C. smooth
D. all are voluntary
Structures and Functions of Living Organisms and Genetics › View
Which best explains how the nervous system controls the skeletal system?
A. The brain protects the skull.
B. The brain stores calcium for bones.
C. The brain produces red blood cells for bones.
D. The brain sends messages to the muscles to move bones.