The food girlfriend eat takes an remarkable journey v your body, from height (your mouth) come bottom (your anus). Along the method the beneficial parts of your food space absorbed, offering you energy and nutrients. Here’s a step-by-step account that the cradle system’s workings.
Structure the the digestive System

What is the digestive system?

Your digestive system is made up of the cradle (GI) tract and also your liver, pancreas and gallbladder. The GI tract is a series of hollow organs that are linked to each various other from your mouth to her anus. The guts that make up your GI tract, in the order that they room connected, encompass your mouth, esophagus, stomach, tiny intestine, large intestine and also anus.

You are watching: Which of following processes is the function of the smooth muscle layer of the digestive system?

What walk the digestive mechanism do?

Your digestive device is uniquely constructed to carry out its job of turning your food right into the nutrients and also energy you need to survive. And also when the done v that, the handily packages your solid waste, or stool, for disposal as soon as you have a bowel movement.

Why is digestion important?

Digestion is important because your body requirements nutrients native the food you eat and the liquids girlfriend drink in order come stay healthy and role properly. Nutrients encompass carbohydrates, proteins, fats, vitamins, minerals and water. Her digestive system breaks down and absorbs nutrients from the food and also liquids friend consume to usage for essential things favor energy, growth and also repairing cells.

What organs comprise the digestive system?

The main organs that make up the digestive mechanism (in bespeak of your function) space the mouth, esophagus, stomach, small intestine, huge intestine, rectum and anus. Helping them follow me the method are the pancreas, bile bladder and liver.

Here’s exactly how these organs job-related together in your digestive system.



The mouth is the start of the cradle tract. In fact, cradle starts before you also take a bite. Her salivary glands get active as friend see and smell the pasta dish or heat bread. After ~ you begin eating, you chew your food into pieces the are an ext easily digested. Her saliva mixes v the food to begin to break it down into a kind your body deserve to absorb and use. When you swallow, her tongue passes the food right into your throat and also into her esophagus.


Located in your throat near your trachea (windpipe), the esophagus receives food from her mouth once you swallow. The epiglottis is a tiny flap the folds over your windpipe as you swallow to stop you from choking (when food goes into your windpipe). A series of muscular contractions within the esophagus referred to as peristalsis it is intended food to your stomach.

But very first a ring-like muscle at the bottom of her esophagus referred to as the lower esophageal sphincter has to relax come let the food in. The sphincter climate contracts and prevents the components of the stomach from flowing ago into the esophagus. (When that doesn’t and these materials flow ago into the esophagus, you might experience acid reflux or heartburn.)


The stomach is a hollow organ, or "container," the holds food while the is being mixed with stomach enzymes. This enzymes proceed the procedure of breaking under food into a usable form. Cells in the lining of your stomach secrete a solid acid and an effective enzymes that space responsible for the failure process. As soon as the materials of the stomach space processed enough, lock released right into the small intestine.

Small intestine

Made increase of three segments — the duodenum, jejunum, and ileum — the small intestine is a 22-foot long muscular tube that breaks under food utilizing enzymes released by the pancreas and also bile from the liver. Peristalsis also works in this organ, moving food through and also mixing it with digestive juices from the pancreas and also liver.

The duodenum is the very first segment of the small intestine. It’s mostly responsible for the constant breaking-down process. The jejunum and also ileum lower in the intestine are largely responsible because that the absorption of nutrients right into the bloodstream.

Contents the the tiny intestine start out semi-solid and end in a liquid type after passing v the organ. Water, bile, enzymes and mucus add to the change in consistency. When the nutrients have been soaked up and the leftover-food residue liquid has actually passed through the small intestine, it climate moves on come the huge intestine, or colon.


The pancreas secretes cradle enzymes into the duodenum that malfunction protein, fats and also carbohydrates. The pancreas also makes insulin, passing it straight into the bloodstream. Insulin is the chief hormone in her body because that metabolizing sugar.


The liver has numerous functions, but its key job within the digestive device is to procedure the nutrients took in from the small intestine. Bile from the liver secreted right into the little intestine likewise plays an essential role in digesting fat and some vitamins.

The liver is her body's chemical "factory." that takes the life materials took in by the intestine and also makes all the various chemicals your body demands to function.

The liver also detoxifies possibly harmful chemicals. It breaks down and secretes countless drugs that can be toxicity to her body.


The gallbladder stores and also concentrates bile indigenous the liver, and also then releases it right into the duodenum in the little intestine to help absorb and also digest fats.

Colon (Large Intestine)

The huge intestine, or colon, is responsible for handling waste so that emptying the bowels is easy and also convenient. That a 6-foot lengthy muscular tube that connects the tiny intestine to the rectum.

The large intestine is comprised of the cecum, the ascending (right) colon, the transverse (across) colon, the diminish (left) colon, and also the sigmoid colon, which connects to the rectum.

Stool, or rubbish left end from the digestive process, is passed v the colon by way of peristalsis, very first in a fluid state and also ultimately in a heavy form. Together stool passes v the colon, water is removed. Stool is save in the sigmoid (S-shaped) colon till a "mass movement" empties it right into the rectum as soon as or twice a day.

It usually takes about 36 hrs for stool to gain through the colon. The stool itself is greatly food debris and bacteria. This “good” bacteria do several advantageous functions, such as synthesizing various vitamins, processing waste products and also food particles and also protecting against harmful bacteria. Once the diminish colon becomes complete of stool, or feces, that empties its materials into the rectum to start the procedure of removed (a bowel movement).


The rectum is a straight, 8-inch chamber that connects the colon come the anus. The rectum's job is to receive stool native the colon, allow you know that over there is stool to it is in evacuated (pooped out) and also to organize the stool until evacuation happens. As soon as anything (gas or stool) comes right into the rectum, sensors send a article to the brain. The mind then decides if the rectal contents can be released or not.

If castle can, the sphincters relax and the rectum contracts, disposing its contents. If the materials cannot it is in disposed, the sphincter contracts and the rectum accommodates so that the sensation temporarily go away.


The anus is the last component of the digestive tract. That is a 2-inch lengthy canal consist of of the pelvic floor muscles and the two anal sphincters (internal and external). The lining the the upper anus is able come detect rectal contents. It lets you understand whether the contents are liquid, gas or solid.

The anus is surrounding by sphincter muscles the are crucial in enabling control that stool. The pelvic floor muscle creates an angle between the rectum and the anus that stops stool from comes out as soon as it’s not claimed to. The internal sphincter is always tight, other than when stool enters the rectum. This keeps us continent (prevents united state from pooping involuntarily) as soon as we space asleep or otherwise unaware the the existence of stool.

See more: Search Page 1/20: Left Proximal Humerus Fracture Icd 10, Fracture Of Upper End Of Humerus S42

When we obtain an advice to go to the bathroom, we depend on our exterior sphincter to hold the stool until reaching a toilet, whereby it climate relaxes to release the contents.