Saturated fats
they are in animals and vegetable oil, chocolate, meat , eggs, and dairy
I think the answer is nervous system and muscular system work together but i could be wrong.
It is false
Because the Cardiac muscles are different from the smooth muscles they are found in the heart while the smooth muscles are in the stomach etc.
If this is wrong please let me know and I will help you the best I can enjoy! and have a great day :)