For today’s biology topic, I chose the digestion process. The digestion process is more complex than you think, you don’t eat your food, and then it immediately goes to your stomach. A lot of organs are working to help this process.
.So before you even eat your food, your mouth is already salivating, smelling or seeing the food triggers it. Which activates the salivary glands which make you start salivating.
Then you chew your food in your mouth, which is done by your teeth and tongue. Your teeth breaks down your food by either chewing, crushing, cutting, or grounding, which you probably already guessed, to make it easier to swallow. Your tongue keeps the food between your teeth.
After chewing your food, you would swallow it, and it goes down the pharynx region, which is the throat region. It goes down the esophagus, which leads to your stomach. There is also the epiglottis, which is basically a flap made of cartilage, that covers your windpipe(where the air goes when you inhale/exhale) when you swallow.
If you choke then that means the epiglottis did not cover your windpipe. And when you inhale, the epiglottis covers your esophagus, to allow air to go down your windpipe.
Now once your food goes down your esophagus, it’s finally in your stomach. The stomach is like a muscular bag, it’s flexible and expandable. In the main chamber of your stomach(called the lumen), you produce gastric juice which mixes with the food, it mixes to until chyme is produced.
After the mixing in the stomach, the chyme enters your small intestine. The first couple inches of your small intestine, is called the duodenum. Where chemicals from your pancreas and liver mixes with the chyme that’s passing through your small intestine.
While in the small intestine, it comes in contact with villi, who absorbs the nutrients. And in the villi, there are small capillaries(tiny blood vessels), and the nutrients enters the blood and goes to the liver. In the liver, it detoxifies the blood and then it goes to the heart, cause it’s the most important, then to all the other parts of your body.
The final part of this digestion process is the large intestine. It includes the colon, cecum, and the appendix. The colon absorbs the water from the chyme, digestive juice, etc. The cecum is not really important for humans, but for some animals, it’s where they ferment food. The appendix plays a small role in the immune system.
We still don’t exactly what the appendix is for exactly, some people have it removed because of some problems, and they live fine without it.
Finally the food exits your body, and ends the digestion process.
I really enjoyed learning about the digestion process, and I hope you enjoyed this essay