This is two images of what I had for dinner on two different days and I will name the nutrients that are in it.
Vitamins from the Vegemite, Carbohydrates from the bread and Lipids from the bread and butter
Protein from the eggs and bacon inside, Carbohydrates from the bread and Lipids from the bread and butter
The way you digest food is you chew with your teeth and mix the food with saliva which has enzymes in it. This part of digesting is called mastication. Then the chewed food goes down the oesophagus using a method called peristalsis to get it down to the stomach where the food mixes with acid and breaks the food down more. It then goes through the small intestine where it gets mixed with different enzymes and villi in the small intestine picks up the nutrients and absorbs them. The small intestine get it's enzymes from where it is stored, the Gall bladder which gets it from the pancreas. Finally it goes through the large intestine where the excess water is absorbed and gets sent to the rectum where it is stored before excretion. Then it goes through the anus as a waste product which is also known as faeces.
Ingestion is when you're breaking down your food in your mouth and then sending it to the stomach for digestion. Digestion is when the stomach churns and breaks up the food with the stomach acid. Absorption happens when the food goes through the small and large intestine where the nutrients are absorbed from the food and go to the blood and then the water is absorbed. Excretion is when the food is now faeces and is stored in the rectum ready to go through the anus.
When were dissecting the rat to see what the digestive system sort of look likes. It was quite disgusting but I made it through. A lot of people said there was a horrible smell coming from the rat but I couldn't smell it. We had to pin the legs down so they wouldn't get in the way of the dissection. We then had to cut the skin and fur off and move that out of the way. Then there was a sort of transparent sack that was holding all the organs which we had to carefully cut open. Once open we started pulling out the liver, it took a while but we got there in the end. After taking the liver out you could see the pool of blood sitting there. We sadly ran out of time and couldn't pull anything else out but it was an interesting experience.