Digestive system diagram

Digestive system quizzes and free learning tools Author: Molly Smith DipCNM, mBANT • Reviewer: Last reviewed: September 14, 2022 Reading time: 3 minutes When it comes to digestive system anatomy, there are several organs, arteries, veins, and nerves to familiarise yourself with. It can feel a little overwhelming, but with the right tools, it doesn’t need to be. Keep reading to see our recommendations for getting started. Labeled diagram of the digestive system anatomy One of our favorite ways to ease ourselves into learning a new topic is with labeled and unlabeled diagrams. The digestive system is a vast area full of interesting structures. Being able to visualize them with the help of a labeled diagram will get you feeling more familiar with the appearance, location, and neighboring anatomy of each one of them in no time. In order to really familiarize yourself with the digestive system, it's also a great idea to draw the different structures. Here's how you can master drawing the human body. Free Digestive System Diagrams To help you out, we’ve included a labeled diagram of the digestive system below. Spend a few minutes studying this, then test your knowledge by filling in your own, blank (unlabeled) digestive system diagram. Afterwards, see how you got on by comparing your answers to the original diagram. Maybe you passed your digestive system labeling attempt with flying colors, or maybe you still need a bit of extra help. No worries! Look no further than our digesti...

Term Meaning Digestive system The body system that converts food into energy and nutrients to fuel the body Chemical digestion The breaking down of food using chemical agents, such as enzymes and bile Mechanical digestion The breaking down of food by physical means, such as chewing Absorption The process by which nutrients pass through the walls of the digestive system into the blood Excretory system The body system that removes metabolic wastes from the body Excretion The process of removing wastes and excess water from the body The chyme is slowly transported into the small intestine, where most chemical digestion takes place. Bile, which is made in the liver, is released from the gallbladder to help digest fats. In addition, enzymes from the pancreas and intestinal walls combine with the chyme to start the final part of digestion. The chyme then enters the large intestine. Here, water is removed and bacteria break down some undigestible materials, producing important compounds (such as vitamin K). The concentrated waste material that remains is called feces, which is passed into the rectum and eliminated from the body through the anus. The small intestine is actually longer than the large intestine. In fact, at approximately 20 feet in length, the small intestine is nearly four times as long as the large intestine (5 feet long)! However, the intestines are named for their diameters, not their lengths. The large intestine has a diameter of about 3 inches compared to the ...

Diagram Of Digestive System Digestion is a vital process where complex food substances are broken down into simpler and absorbable molecules so that it could be easily absorbed by the different cells and tissues. The digestive system plays a significant role in the digestion process, which is composed of the alimentary canal and other associated glands. The alimentary canal is divided into five main parts- mouth, esophagus, stomach, small intestine, small intestine and lastly large intestine. The diagram of the Also Refer:  Diagram Of Digestive System The diagram below shows the structure and functions of the human digestive system. Let learn the different parts of the human digestive system. Mouth— It includes teeth, salivary glands and tongue. It is the beginning of the digestive tract and the process of digestion begins from the mouth, where teeth help by breaking and grinding the food molecules followed by the saliva mixing with the food particles. Pharynx–It is a fibromuscular, Y-shaped tube-like structure, attached to the terminal end of the mouth. It is involved in the passage of chewed food from the mouth through the esophagus. Esophagus —This is a muscular tube, measuring 25 cm long and located near the trachea connecting to the pharynx. It is the upper part of the gastrointestinal tract and is mainly involved in delivering the food particles from the mouth to the stomach. Stomach–It is a hollow and muscular organ, situated towards the left side of the abdomin...

\( \newcommand\) • • • • • • • • • • • • The organs of the digestive system can be divided into upper and lower digestive tracts. The upper digestive tract consists of the esophagus, stomach, and the small intestine; the lower tract includes all of the large intestine, the rectum, and anus. Key Terms • small intestine: A winding, digestive tube and the site of large scale nutrient absorption comprised of the duodenum, jejunum, and ileum. • esophagus: An organ in vertebrates that is a muscular tube through which food passes from the pharynx to the stomach. • stomach: An organ in animals that stores and breaks down food in the process of digestion. • large intestine: The second to last part of the digestive system comprised of the cecum and colon. The human body uses a variety of mental and physiological cues to initiate the process of digestion. Throughout our gastrointestinal (GI) tract, each organ serves a specific purpose to bring our food from the plate to a digestible substance from which nutrients can be extracted. The Digestive Tube The organs of the gastrointestinal tract: This diagram shows the relationship between the various organs of the digestive system. It shows how the oral cavity connects to the esophagus and descends into the stomach and then the small intestine. It then connects to the large intestine, then the rectum, and, finally, the anus. Our digestive system is like a long tube, with different segments doing different jobs. The major organs within our...

Overview The digestive system is made up of the gastrointestinal tract-mouth, esophagus, stomach, small & large intestine, and rectum. What is the stomach? The stomach is a J-shaped organ that digests food. It produces Your stomach is part of the gastrointestinal (GI) tract. The GI tract is a long tube that starts at your mouth. It runs to your anus, where stool (poop) leaves your body. The GI tract is a key part of your Function What is the stomach’s function? Your stomach’s purpose is to digest food and send it to your small intestine. It has three functions: • Temporarily store food. • Contract and relax to mix and break down food. • Produce enzymes and other specialized cells to digest food. How does the stomach work with the rest of the GI tract? Each part of your GI tract breaks down food and liquid and carries it through your body. During the digestive process, your body absorbs nutrients and water. Then, you expel the waste products of digestion through your large intestine. Food moves through your GI tract in a few steps: • Mouth: As you chew and swallow, your tongue pushes food into your throat. A small piece of tissue called the epiglottis covers your windpipe. The epiglottis prevents choking. • Esophagus: Food travels down a hollow tube called the • Stomach: Your stomach creates digestive juices and breaks down food. It holds food until it is ready to empty into your • Small intestine: Food mixes with the digestive juices from your intestine, • Large intestine:...

\( \newcommand\) • • • • • • • • • • • • • Yummy! If you’re a dessert lover, then just the sight of this flan dish may make your mouth water. The “water” in your mouth is actually saliva, a fluid released by glands that are part of the digestive system. Saliva contains digestive enzymes among other substances important for digestion. When your mouth waters at the sight of a tasty treat, it’s a sign that your digestive system is preparing to digest food. Figure \(\PageIndex\): Caramel Cream Flan What Is the Digestive System? The digestive system consists of organs that break down food, absorb its nutrients, and expel any remaining waste. Organs of the digestive system are shown in Figure \(\PageIndex\). Most of these organs make up the gastrointestinal (GI) tract. Food actually passes through these organs. The rest of the organs of the digestive system are called accessory organs. These organs secrete enzymes and other substances into the GI tract, but food does not actually pass through them. Functions of the Digestive System Figure \(\PageIndex\): The components of the digestive system include the gastrointestinal tract and accessory organs of digestion. The image has labeled parts of the mouth, salivary glands, liver, gallbladder and associated ducts, stomach, pancreas, and small and large intestine parts. Find the organs of the digestive system in this diagram as you read about them in the text. The digestive system has three main functions relating to food: digestion o...

How Does the Digestive System Work? So there you are, sitting at lunch, enjoying some grilled-chicken pizza and a few orange wedges. When you're finished, you take a last drink of milk, wipe your mouth, and head to your next class. In a few minutes you're thinking about the capital of Oregon or your science fair project. You've completely forgotten about that pizza lunch you just ate. But it's still in your stomach — sort of like a science experiment that happens all the time! What's Digestion? Your digestive (say: dye-JES-tiv) system started working even before you took the first bite of your pizza. 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. This process, called digestion, allows your body to get the nutrients and energy it needs from the food you eat. So let's find out what's happening to that pizza, orange, and milk. What's Saliva (Spit) Do? Even before you eat, when you smell a tasty food, see it, or think about it, digestion begins. Saliva (say: suh-LYE-vuh), or When you do eat, the saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow. Your tongue helps out, pushing the food around while you chew with your teeth. When you're ready to swallow, the tongue pushes a tiny bit of mushed-up food called a bolus (say: BO-luss) toward the back of your throat and into the opening of your esophagus, the second part of the dige...

3 of 7 Esophagus As you swallow the bite of pie, muscles in your mouth and throat propel it to your upper esophagus, the tube that connects your throat to your stomach. Muscles in the wall of your esophagus create synchronized waves — one after another — that propel the pie into your stomach. In this process, called peristalsis, muscles behind the bolus of pie contract, squeezing it forward, while muscles ahead of it relax, allowing it to advance without resistance. When the bolus reaches the lower end of your esophagus, pressure from the food signals a muscular valve — the lower esophageal sphincter — to relax and let the food enter your stomach. • Your digestive system and how it works. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/digestive-diseases/digestive-system-how-it-works. Accessed Nov. 6, 2019. • Naish J, et al., eds. The alimentary system. In: Medical Sciences. 3rd ed. Elsevier; 2019. https://www.clinicalkey.com. Accessed Nov. 6, 2019. • The digestive system. International Foundation for Gastrointestinal Disorders. https://www.iffgd.org/manage-your-health/the-digestive-system.html?showall=1. Accessed Nov. 6, 2019.

Learning Objectives By the end of this section, you will be able to: • Describe the organs of the alimentary canal from proximal to distal, and briefly state their function • Identify the accessory digestive organs and briefly state their function • Describe the four fundamental tissue layers of the alimentary canal and the function of each layer • Contrast the contributions of the enteric and autonomic nervous systems to digestive system functioning • Explain how the peritoneum anchors the digestive organs The function of the digestive system is to break down the foods you eat, release their nutrients, and absorb those nutrients into the body. Although the small intestine is the workhorse of the system, where the majority of digestion occurs, and where most of the released nutrients are absorbed into the blood or lymph, each of the digestive system organs makes a vital contribution to this process ( Figure 23.1.1 – Components of the Digestive System: All digestive organs play integral roles in the life-sustaining process of digestion. As is the case with all body systems, the digestive system does not work in isolation; it functions cooperatively with the other systems of the body. Consider for example, the interrelationship between the digestive and cardiovascular systems. Arteries supply the digestive organs with oxygen and processed nutrients, and veins drain the digestive tract. These intestinal veins, constituting the hepatic portal system, are unique in that they do...