How do the skeletal and muscular systems work.

The muscles receive orders from the…

• Circulatory system

• Nervous system

• Digestive system

• Respiratory system

The skeleton moves thanks to….

• Moveable joints

• Fixed joints

In the joints, pairs of muscles called……make opposite movements.

• Opposite

• Antagonists

Is running a voluntary or a reflex action?

• Voluntary

• Reflex

Is blinking in bright light a voluntary or a reflex action?

• Voluntary

• Reflex

Is holding your breath under water a voluntary or a reflex action?

• Voluntary

• Reflex

Is clapping your hands a voluntary or a reflex action?

• Voluntary

• Reflex