How could I summerize the nervous system?​

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.

Which type of stimulus do mechanoreceptors detect? sound pain heat light

During binary fission, what events must occur before the cell splits into two new cells?