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Which ONE of the following can be absorbed into the blood without further digestion? A Starch B Glycogen C Glucose D Fats If the pancreatic duct is cut. A Protein digestion will not be affected B Homeostatic control of the glucose level will be affected C Carbohydrates digestion will be affected D Carbohydrates digestion will be affected

Which ONE of the following can be absorbed into the blood without further digestion? A Starch B Glycogen C Glucose D Fats If the pancreatic duct is cut. A Protein digestion will not be affected B Homeostatic control of the glucose level will be affected C Carbohydrates digestion will be affected D Carbohydrates digestion will be affected

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Digestion and Absorption: Understanding Key Concepts #### 1. Absorption into the Bloodstream **Question 1.1:** Which ONE of the following can be absorbed into the blood without further digestion? - A. Starch - B. Glycogen - C. Glucose - D. Fats To answer this question, one needs to understand which substances do not require further breakdown by digestive enzymes to be absorbed into the bloodstream. **Correct Answer: C. Glucose** Glucose is a monosaccharide and can be directly absorbed into the bloodstream without any further digestion. In contrast, starch, glycogen, and fats need to be broken down into simpler forms before absorption. #### 2. The Role of the Pancreatic Duct **Question 1.2:** If the pancreatic duct is cut: - A. Protein digestion will not be affected - B. Homeostatic control of the glucose level will be affected - C. Carbohydrates digestion will be affected - D. Carbohydrates digestion will not be affected The pancreatic duct allows pancreatic enzymes to reach the small intestine, which are essential for the digestion of carbohydrates, proteins, and fats. **Correct Answer: C. Carbohydrates digestion will be affected** Cutting the pancreatic duct would prevent the enzymes produced by the pancreas from reaching the small intestine, thereby affecting the digestion of carbohydrates. ### Explanation of Concepts: 1. **Absorption into the Blood without Further Digestion:** - **Starch:** Polysaccharide that needs to be broken down into glucose molecules. - **Glycogen:** Storage form of glucose in animals that needs enzymatic breakdown. - **Glucose:** Monosaccharide that requires no further breakdown. - **Fats:** Require emulsification and breakdown into fatty acids and glycerol. 2. **Impact of Cutting the Pancreatic Duct:** - The pancreas releases enzymes that are crucial for digesting macronutrients. - Without these enzymes, the digestion and subsequent absorption of proteins, carbohydrates, and fats in the small intestine would be impaired. By understanding these fundamental aspects of human digestion and absorption, learners can better appreciate the importance of enzymes and the digestive system's intricate processes.
Transcribed Image Text:### Digestion and Absorption: Understanding Key Concepts #### 1. Absorption into the Bloodstream **Question 1.1:** Which ONE of the following can be absorbed into the blood without further digestion? - A. Starch - B. Glycogen - C. Glucose - D. Fats To answer this question, one needs to understand which substances do not require further breakdown by digestive enzymes to be absorbed into the bloodstream. **Correct Answer: C. Glucose** Glucose is a monosaccharide and can be directly absorbed into the bloodstream without any further digestion. In contrast, starch, glycogen, and fats need to be broken down into simpler forms before absorption. #### 2. The Role of the Pancreatic Duct **Question 1.2:** If the pancreatic duct is cut: - A. Protein digestion will not be affected - B. Homeostatic control of the glucose level will be affected - C. Carbohydrates digestion will be affected - D. Carbohydrates digestion will not be affected The pancreatic duct allows pancreatic enzymes to reach the small intestine, which are essential for the digestion of carbohydrates, proteins, and fats. **Correct Answer: C. Carbohydrates digestion will be affected** Cutting the pancreatic duct would prevent the enzymes produced by the pancreas from reaching the small intestine, thereby affecting the digestion of carbohydrates. ### Explanation of Concepts: 1. **Absorption into the Blood without Further Digestion:** - **Starch:** Polysaccharide that needs to be broken down into glucose molecules. - **Glycogen:** Storage form of glucose in animals that needs enzymatic breakdown. - **Glucose:** Monosaccharide that requires no further breakdown. - **Fats:** Require emulsification and breakdown into fatty acids and glycerol. 2. **Impact of Cutting the Pancreatic Duct:** - The pancreas releases enzymes that are crucial for digesting macronutrients. - Without these enzymes, the digestion and subsequent absorption of proteins, carbohydrates, and fats in the small intestine would be impaired. By understanding these fundamental aspects of human digestion and absorption, learners can better appreciate the importance of enzymes and the digestive system's intricate processes.
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