1.   Other organisms show evidence for muscular activity and so presumably a nervous system, as well as the inferred presence of a circulatory system.

2.   Energy is needed for muscular activity.

3.   Thus we designed the present experiments to investigate the effect of NO synthase inhibition on gall bladder muscular activity in vivo and in vitro.

4.   Grand mal epilepsy, in which victims often collapse, lose consciousness and fall into convulsive muscular activity, is one of the most severe forms.

5.   Muscular activities like chirping tend to vary with that temperature.