What is the digestive system?
Phone Number Don't worry. Test your knowledge with a question chapter practice test. Password must be at least 8 characters long. This is because, for them, the liver will produce sufficient bile so that they can process fats even without the bile that would have been stored in their gallbladder. If you wouldn't mind, could you give us more details about why this question wasn't great? The acidity of the stomach destroys the shape denatures many proteins, including many enzymes. What color might you turn if you have a cirrhotic liver?
Create your account, risk-free.
Science in the Classroom is a collection of annotated research papers and accompanying teaching materials designed to help students understand the structure and workings of professional scientific research. To learn about the digestive system. To begin to explore where nutrients come from, as well as their importance for particular tasks in the body. Students are starting to view the body as a system in these grades.
One important thing they should start to understand is that in order for their "systems" to properly function, they need energy and materials from food as the benchmark states.
Though students know they must eat to live, they may not have made the distinct connections between food and the body properly repairing itself, or food and growth; even a connection as simple as a lack of iron or carbohydrates making one tired. This lesson will focus on the digestive system in order to address the latter part of the benchmark—that undigested food is eliminated.
In addition, it will begin to explore where nutrients come from and their importance for particular tasks in the body. This Science NetLinks lesson is the first of a three part series. It works in conjunction with Nutrition 2: Good Food, Good Health, a lesson that teaches about the food groups and how vitamins and minerals help the body function properly, and Nutrition 3: Younger elementary school students might think that the contents of the body is what they have seen being put into it or coming out of it.
Students know food is related to growing and being strong and healthy, but they are not aware of the physiological mechanisms. In upper elementary, students can list a large number of organs and by 5th grade, "students know that food undergoes a process of transformation in the body. Students should naturally begin talking about the digestive system in response to the final question listed above.
Let them know that food and the digestive system are the topics for this lesson. Once students have done some preliminary exploration of the digestive system, ask these questions:.
Next, brainstorm answers to these questions. There are many answers, many of which are not very obvious, but this will get students thinking beyond the basic processes of the digestive system. Depending on your students' ability, this article can be read online or printed out and read in class. Also, it is not necessary to click on the links within the text for this lesson. While Barrett's esophagus does increase the risk of esophageal cancer, the risk of this cancer remains low.
GERD is an acronym for gastroesophageal reflux disease. The acidity of the stomach destroys the shape denatures many proteins, including many enzymes. Denaturing a protein both makes it easier to digest and makes sure that normal function of protein hormones in the food you consume do not affect your body.
What is the pH of the hydrochloric acid HCl secreted by the stomach? A pH of is a nasty acid, capable of denaturing altering the shape many proteins making digestion easier and killing bacteria. This low pH also facilitates the absorption of vitamin B12 and minerals such as calcium. Bile is stored in the gallbladder to help process fats that enter the small intestine. This is why some people who have had their stomach removed must reduce the fat content of the individual meals they consume.
However, there are other people who have had their gallbladder removed who do not have the need to reduce the fat content of their meals. This is because, for them, the liver will produce sufficient bile so that they can process fats even without the bile that would have been stored in their gallbladder. Which of the following plays a role in neutralizing the acidity of the stomach content that enters the small intestine?
Bicarbonate is a buffer secreted by the pancreas into the small intestine. Bicarbonate plays a role in neutralizing the acid stomach content chyme that enters the small intestine. Foods such as spinach, rubarb, almonds, and cashews, which are high in oxalates and phytates, found in unleavened whole grains, bind to minerals limiting their absorption.
Foods such as spinach which is high in oxalates and phytates, found in unleavened whole grains, bind to minerals limiting their absorption. The roles of vitamin D in the maintenance of health include promoting the absorption of calcum and phosphorus. What color might you turn if you have a cirrhotic liver?
A cirrhotic liver cannot function properly. As a result bile pigments enter the blood, are deposited in the skin and give a person a yellowish tinge. Which of the following vitamins enhances the absorption of iron? Vitamin C binds to iron promoting it's absorption. What is one of the primary functions of the colon?
While the majority of water absorption occurs in the small intestine, the absorption of water in the colon helps solidify fecal matter, making defecation easier. Which of the following should you do if you want to increase your risk of colorectal cancer?
A diet high in red meats, especially processed barbequed, and grilled meats increase the risk of colon cancer. Such gallstones can block the flow of bile out of the gall bladder causing pain in places such as between the shoulder blades and in the abdominal region.
Other symptoms include nausea, vomiting, and indigestion. Colorectal cancer risk greatly increases starting at about age 50 years plus. If a colonoscopy does not find any problems another one will not be needed for 10 years, unless symptoms arise that indicate the need for a colonoscopy.
Carbohydrates, Lipids and Proteins I Highscore: Alcohol and Water Highscore: Body Weight I Highscore: Body Weight II Highscore: Digestive System I Highscore: Digestive System II Highscore: Phytochemicals and Antioxidants Highscore: