Homeostasis
and the digestive system
What is homeostasis?
Skeletal system
Cardiovascular system
repritory system
digestive system and junkfood
Digestive system
The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (GI tract). The alimentary canal is made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. In addition to the alimentary canal, there are several important accessory organs that help your body to digest food.
Junkfood
"Junk food" generally refers to foods that contribute lots of calories but little nutritional value. Of course, what's considered "junk food" depends on whom you ask. Some might say pizza is junk food, for example. But I personally don't think so, since it contributes real food with nutrients, like cheese and tomato sauce. Add whole-wheat or part whole-wheat crust, plus veggies as a topping, and I'd say pizza completely exits the junk food category.
hes.ucfsd.org/gclaypo/repiratorysys.html
en.wikipedia.org/?title=Circulatory_system
http://www.innerbody.com/image/digeov.html
https://en.wikipedia.org/wiki/Homeostasis