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Human body hierarchy: Digestive system

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jack averill

on 11 March 2016

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Transcript of Human body hierarchy: Digestive system

The human body is made of many different organs and systems, but here is the digestive system:
When you eat a food, it will first be torn and broken up by your teeth.

But first, let's figure out the digestive system's actual job.
When you eat your food, what really happens?
When food travels to the stomach it is broken down alot more than small pieces that your teeth made. The food will become very small from stomach acid and will pass through a entryway to the small intestine. But first, The pancreas, gallbladder and liver won't touch the food but send a chemical called bile into the once was called and now called chyme.
Your small intestine will take the food you once ate that has now turned into a mushy substance called chyme, your villi which are small stem-like branches that are connected to and around the small intestine. Their job is to pick up the nutrients and send it to the other parts of the body.
Now that your food is out of the stomach, it heads into the small intestine, which if was uncoiled is over 20 feet long!
Those are the steps from when you take your first bite of food to when it becomes feces, but now back to our other question.
Your large intestine (also known as the colon or large bowel) will take whats left of your food that you ate oh so long ago and dehydrates the now known as feces and stores it in the rectum before it leaves through the anus (with the excretory system) at the end of it's journey.
The digestive system:
Into the stomach:
Large intestine and out:
Human body hierarchy: Digestive system
The Digestive System:
But did you ever wonder if there was a structure or hierarchy, not that the human body was all one working system?
Next, your food will go pushed down your pharynx and esophogaus. First the food heads through the pharynx which helps you breath and eat.
The reason you can breath and eat through the pharynx and in to two separate tubes without food or air going the wrong way is from a moveable flap of tissue called the epiglottis. The epiglottis will open when you breath to let air into the windpipe, and it will close when you eat to let food down the esaphogaus. Speaking of the esaphogaus...
By Jack Averill
When the esophogaus gets food it will push it down with waves of muscular contractions which is called peristalsis. The esophaugaus is the connecter from the throat to the stomach.
Now that the nutrients are gone, the body has nothing left to do with the waste. But your waste has 5 feet left of it's 10 hour journey! Those 5 feet are the large intestine.
Is there a hierarchy or structure of the human body?
Yes there is,
and here is how.
The 4 hierarchys i'll show you are the
cells, tissues, organs and organ systems.
Cells:
Epithelial cells are in the eplethial tissue, which i'll mention later. These cells line the cavities in the body and also cover flat surfaces. Of the four major tissue types found in the human body these are the most common.
Tissue:
Epithelial tissue (main tissue and is used for purposes such as lining the organs and protecting them (skin is made of the epithelial tissue), to filtering for the kidneys.)(traits: closely attached for a protective barrier. very good at regenerating, sunburn, skinned knee etc.)
Organs:
Your organs are made up of tissues that line it and protect it.
You already learned about the organs of the digestive system!
Tissues are made up of many cells that cover
the flat surfaces of the tissue.
Organ systems:
The organs systems are made up of organs, which are made up of tissues which are made up of cells!
Organ systems are
all very important to
the human body, so none
beats another. The digestive
system meets the excretory
system when the digestive
system sends feces to the
rectum.
Sources:
The digestive and excretory systems
Organs and their system
Introduction to the digestive systems
Anatomy of the Throat, Esophagus and Stomach
Excretory system:

The excretory system is very helpful to the digestive system. It takes the waste that would otherwise build up in the body and cause a problem.
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