Digestive System of the Dog
The tongue helps the food to move back in your throat creating a bolus while the teeth break it down in a process known as mastication. And the digestive system will be busy at work on your chewed-up lunch for the next few hours — or sometimes days, depending upon what you've eaten. Add a diagonal line to indicate the muscular valve, called the pyloric sphincter, between the duodenum of the small intestine and the stomach. The end of the small intestine should be towards the bottom of your paper and towards the left side. Any other advice to make her more healthy and have more normal stools would be appreciated. The metabolism of carbohydrate, fat and protein is closely linked to the digestive system.
An overarching theme in biology is the connection between structure and function. I often stress this with my students. Please see Sarah Hughes' recent blog, " From Tactile Models to Tactile Graphics " for an excellent model that includes both the structure and the length of the organs of the digestive system. Large due to the larger diameter of the large intestine. Materials 6 large popsicle sticks Permanent marker 26' rope braille label paper braille writer.
Procedure Explain to students that the model you will show them represents the length of the parts of the digestive system. Have students stand up and walk along the length of the rope beginning with the label for mouth.
Stop at each organ to discuss. Discuss the lengths of each part of the digestive system and the function of each as you proceed through the system. Always relate structure and function. Variations Include the excellent model of villi that was described in Sarah Hughes recent blog: It secretes digestive enzymes into the small intestine, and this completes the chemical digestion of foods. Pancreatic juice is capable of digesting lipids, carbohydrates creating energy , proteins creating amino acids for building and nucleic acids.
Both enzymes and hormones are needed to keep the body and digestive system working properly. The pancreas connects to the liver and the gallbladder with the common bile duct. As pancreatic juices are made, they flow into the main pancreatic duct, and then join the common duct — which allows the bile which helps to digest fat break down food before it reaches the small intestine.
When the chyme our juices that are being digested leaves the stomach, it enters the small intestine through the pyloric sphincter — a muscle that serves as a valve and prevents the regurgitation of food from the intestine back into the stomach.
It transforms from an acidic environment to an alkaline one, which means that the acids are neutralized.
The small intestine is lined with very small protrusions that increase the surface area of the intestinal wall, which creates a larger absorption area. Each protrusion, called villi, is covered in smaller hair-like structures, which are called microvilli. Enzymes exist on the villi, helping further break down nutrients into a readily absorbable form. It is the job of the villi that help prevent leaky gut. Leaky gut is when the bowel lining is damaged.
The folds in the small intestine are used to maximize the digestion of food and the absorption of nutrients. By the time food leaves the small intestine, around 90 percent of all nutrients have been extracted from the food that entered it. Once the nutrients have been absorbed, the liquid that is left over passes through the small intestine and goes to the large intestine, or colon. Once the juices that used to be your food leave your small intestine, they enter your large intestine.
At this point, most of the nutrient absorption has happened, but water, fat soluble vitamins and minerals can be absorbed in the colon as well. The naturally present bacteria that are present in your colon will continue to help with digestion; these gut bacteria are called flora.
Flora breaks down wastes and extracts small amounts of nutrients whatever is left. The waste that is left over will exit the body from the colon by means of peristalsis, which are contractions that move the waste to the anal canal.
At first the waste is in a liquid state, but as it moves through the colon, the water is removed and it becomes the solid form of stool.
The stool is mostly food debris and bacteria; the bacteria fuse vitamins, process waste and food particles, and protect us against harmful bacteria. It takes about 36 hours for stool to get through the colon, and when the colon becomes full, it empties its contents into the rectum, which begins the elimination process.
The way we live and eat has a direct impact on our digestive system and how well it functions. By taking steps to improve your digestive health, your digestive system will function more efficiently, and this will improve your overall health.
From the sound of it, you might think leaky gut only affects the digestive system, but in reality it can affect more. Click here to learn more about the webinar. Josh Axe is on a mission to provide you and your family with the highest quality nutrition tips and healthy recipes in the world Health Gut Health Current: How Your Digestive System Works.
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