Hey there! Welcome to the Donut World.

Today, I am going to show you my journey in Simpson's digestive system.

Let me introduce myself! I am the Donut Queen and I am all about the glaze. I am made from flour, sugar, milk, baking powder, butter, icing sugar...and the list goes on and on. I contain almost 11 grams of fat. But donut worry about that, enjoy me!

To be honest it is a complicated and scary ride.

Buckle Up for DONUT WORLD's Thrillingly Wild Ride!

This is Simpson and I am going to begin my journey in his mouth

The Mouth (also known as the oral cavity) is the first portion of the alimentary canal and is oval shaped. It is formed by the gap between the lips, cheeks, tongue, palates, and the throat. The mouth is located inferior to the nose along the body's midline and superior to the chin.The different parts of the mouth are palate, uvula, oral cavity proper, salivary glands, and lingual frenulum.

Digestion first begins here when food is ingested, grinded by the teeth and moistened with saliva (enzyme that breaks down carbs into sugars). Each mouthful takes around 30-60 secs. The tongue helps propel the food by pushing it back where it is then swallowed. This process take 1-3 secs.

Wow! That was a nerve wrecking experience, but it is just the beginning. Before we leave the mouth, the Donut Queen would like to present a fun fact about the mouth. Did you know that the human tongue is as unique as a fingerprint, and no two tongues are alike.

Alright let us move on to the esophagus!

The esophagus also called the gullet runs from the pharynx through the diaphragm to the stomach. Just like the mouth, esophagus is also a part of the alimentary canal. It looks like a flattened, muscular tube and conducts food by peristalsis or slow rhythamic squeezing. In regards to topography, the three distinct regions of the esophagus are cervical, thoracic, and abdominal.

The esophagus contains two sphincters which are upper esophageal sphincter and cardioesophageal sphincter. The cardioesophageal sphincter at the end of the esophagus allows food to enter the stomach. For a medium sized bolus or food ball, it takes around 5-8 minutes to reach the stomach.

Woah okay! So what do you think about the esophagus?

Oh and did you know the cardioesophageal sphincter is involuntary, meaning it cannot be controlled. Whereas, the esophageal sphincter is voluntary and can be controlled.

Alright that was fun! Nowww let us move on to the stomach! Yummm

The stomach is a C-shaped organ located on the left side of the abdominal cavity, and is almost hidden by the liver and the diaphragm. The regions of the stomach are cardiac, fundus, body, and pylorus region.

Stomach is also a part of the alimentary canal. Once the food enters the stomach, it gets mixed with several digestive juices. The stomach produces stomach acid; hydrochloric acid, and pepsin. The pepsin helps digest the proteins into smaller proteins which are essential for growth and repair. Muscular contractions in the stomach reduce food to chyme and then the pyloric sphincter releases the chyme into the duodenum. The whole process takes about 2-6 hours.

I hope you are enjoying the ride so far. Did you know that when you blush (when your face turns red), the lining of your stomach also turns red!

Haha yes that's pretty cool.

Now let's move on to Pancreas-the weird shaped organ

Pancreas looks similar to an elf's ear and it is tucked underneath the stomach and the liver. Pancreas is a dual organ, which means it works both for the digestive and endocrine system.

The pancreas produces pancreatic juice which neutralizes the stomach acid and provides a lot of pancreatic enzymes to break down foods. It empties digestive juices that break down carbohydrates, fats, and protein. The regions of pancreas are the head, body, tail, and uncinate process. The pancreatic duct-tube drains enzymes and pancreatic juice out of the pancreas. The pancreas is not a part of the alimentary canal. Every 24 hours, the pancreas produces about 8 ounces of digestive juice filled with enzymes like lipase, protease, and amylase.

So, that was the pancreas-one of my favorite organs.

We should leave the pancreas now and move on to the liver.

But before that I would like to share a fact about the pancreas. Did you know that the pancreas releases a fluid that contains bicarbonate or baking soda, which helps in neutralizing the acids coming into the intestine from the stomach.

Liver is the largest gland in the body and is shaped like a triangle. It is located under the diaphragm, next to the stomach. It is responsible to detox the blood and produce bile to help break down or emulsify fat into smaller bits.

The liver is not a part of the alimentary canal. It produces almost a quart of bile per day, in which about a quarter of the bile passes directly into the intestinal tract and the rest is stored in the gall bladder. One fun fact about the liver is that it stores minerals and vitamin A, E, and K which are fat soluble vitamins and are important for healthy blood cell development and one formation.

I de-liver-ed all the important details to you.

Now let's move on to the gallbladder.

The gall bladder is a bulb shaped and sits beneath the liver. Specifically, it is locates within the right hypochondrial region of the abdomen. It is responsible for storing the bile that the liver produces.The stored bile is the released from the gallbladder in response to cholecystokinin- a peptide hormone which stimulates the digestion of fat and protein.