Answer:
Sympathetic nervous system:
Sympathetic nervous system helps the body to prepare at conditions such as threat and danger. This system increases the heart beat and cause muscle contraction. This system is referred as "fight or flight" system.
Parasympathetic nervous system:
Parasympathetic nervous system controls the body to prepare at rest. This system maintains the homeostasis, decreases the heart beat and causes the relaxation of muscles. This system is referred as "rest and digest" system.
