The two main parts are the Systemic and Pulmonary
The digestive system helps process the food you have eaten in your body so then it can come out.
I've had this question before and the answer is D) 30 minutes per day, 5 days a week
Benzodiazepines are a central nervous system depressant, and have muscle-relaxing properties (such as valium). Opioids may also be considered CNS depressants, but I am not sure that they cause muscle relaxation.
