Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Question
Which of the following types of movement is responsible for the mixing of food in the GI tract?
Group of answer choices
Deglutition
Mass movement
Peristalsis
Segmentation
In the digestion of lipids, a chylomicron contains
Group of answer choices
Both monoglycerides and fatty acids
Monoglycerides
Fatty acids
Triglycerides
Which of the following components of digestion is responsible for the chemical breakdown of foods?
Group of answer choices
Chewing
Enzymatic hydrolysis
Dissolving
Emulsification
Which of the following is a hormone that stimulates the pancreas to secrete bicarbonate?
Group of answer choices
Cholecystokinin
Secretin
Gastrin
Glucose-dependent insulinotropic peptide
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Introduction
The large, hollow organs of the gastro-intestinal contain a layer of muscle that enables their walls to move. The movement of the muscle propels food and liquid through the gastro-intestinal tract and mixes the contents within each organ.
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- Select all of the following that apply to LIPID digestion. SELECT ALL THAT APPLY Mechanical digestion in oral cavity Chemical digestion in the oral cavity Mechanical digestion in the stomach Chemical digestion in the stomach Mechanical digestion in the small intestine Chemical digestion in the small intestinearrow_forwardThe motion of these muscles causes waves of contraction to move down the length of the small intestine. What purpose do these waves of contraction serve?arrow_forwardWhich type of digestion occurs in the mouth? O Neither mechanical nor chemical Mechanical O Both mechanical and chemical O Chemicalarrow_forward
- For each of the following organs, describe its products (enzymes or other secretions) and how the product gets into the digestive tract (part of the tract that it empties into): Organ Product (i.e enzyme/secretion) Delivered to (where in the GI tract does it go) Salivary Glands Pancreas Liverarrow_forwardDescribe the three phases of digestion. Please be sure to describe the hormonal and neural inputs that regulate gastric activity during each phase. How does the composition of chyme entering the duodenum control the rate of gastric emptying? Why does eating a meal rich in fats make you feel full (satiated) very quickly?arrow_forwardWhich of the following is not one of the major functions of the liver? produce bile salts to emulsify fats break down old red blood cells produce blood plasma proteins like albumin and fibrinogen maintain blood glucose levels through the release of insulin and glucagon produce urea from amino acids and ammoniaarrow_forward
- Place the steps regarding fat digestion and absorption in the correct order. The abbreviation TAG is used for triacylglycerol (triglyceride). Triacylglycerols enter stomach Triacylglycerols absorbed into cells Answer Bank The gallbladder secretes bile into the small intestine. Undigested fats enter the small intestine. TAGS in chylomicrons enter the lymph system. TAGS in chylomicrons enter the bloodstream. Insoluble lipids, in micelles, are absorbed through the lining of the small intestine. Pancreatic lipase hydrolyzes TAGs in lipid droplets.arrow_forwardWhich of the following is the best example of mechanical digestion? Question 21 options: Digestion of sugars in the small intestine by enzymes Proteins that transport ions in cell membranes. Bile salts combining with fat droplets through the churning action of the stomach. Chewing on food in the mouth.arrow_forwardIn which of the following organs does pepsin perform enzymatic digestion? The stomach The small intestine The mouth The large intestinearrow_forward
- Drag and drop each structure or characteristic to the correct intestine. Small intestine Absorbs water and salts Contains rectum Most vitamins are absorbed here Lacteals absorb fat Villi and microvilli increase surface area Contains 3-part colon Digestive enzymes are produced by epithelial lining Smaller diameter Digestive enzymes produced by the pancreas enter here Contains appendix Contains cecum 1-1.5 meters long in adult human Minerals are absorbed here 3 meters long in adult human Stores and concentrates undigested material Nutrients are absorbed here Hydrolytic enzymes break down macromolecules Large intestinearrow_forwardWhich of the following digestive secretion is not an enzyme? amylase mucus pepsin maltasearrow_forwardB) You eat a bran muffin topped with brown sugar for breakfast. Summarize the process of carbohydrate digestion by explaining what happens to the muffin as it enters your mouth and passes through your gastrointestinal tract. Be sure to include the accessory organs and enzymes involved in digestion. Use as much space as you want.arrow_forward
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