Difference between sympathetic nervous system and parasympathetic nervous system.

SYMPATHETIC NERVOUS SYSTEM:

• Its major function is to mobilize the body's fight or flight responses to prepare the body for intense physical activity.
• It has very short neurons and hence a faster system.
• Body speeds up and becomes more alert.
• Increases heart rate.
• Contracts the muscle.
• Adrenal gland releases adrenaline.
• Glycogen to glucose conversion increases for muscle energy.

PARASYMPATHETIC NERVOUS SYSTEM:

• Its general function is to control the homeostasis and the body's rest-and-digest response.
• It has longer pathways (neurons) and hence slower system.
• It restores the body to a calm state.
• Decreases heart rate.
• Muscles relax.
• No involvement of adrenal gland.
• No such increase of glucose.