Textbook Question
Lipids associate with bile salts in the small intestine to form_____ . In the enterocyte, lipids are packaged with other lipids into______.
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Ch. 22 The Digestive System
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomous Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Nutrition and Metabolism7
- Ch. 24 The Urinary System39
- Ch. 25 Fluids, Electrolytes, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 22, Problem 18c
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. Smooth muscle of the stomach contracts when food enters from the esophagus.
Verified step by step guidance1
Step 1: Understand the role of smooth muscle in the stomach. Smooth muscle in the stomach is responsible for mixing and propelling food through the digestive tract via peristalsis and segmentation.
Step 2: Recall the process of food entering the stomach. When food passes from the esophagus into the stomach, it triggers the stomach's smooth muscle to contract, initiating mechanical digestion.
Step 3: Evaluate the statement provided. The statement claims that smooth muscle of the stomach contracts when food enters from the esophagus. Based on the physiological process, this is true.
Step 4: If the statement were false, you would need to correct it. For example, if the statement incorrectly claimed that smooth muscle does not contract, you would correct it to reflect the role of smooth muscle in initiating digestion.
Step 5: Conclude that the statement is true as written, and no correction is necessary in this case.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Smooth Muscle Function
Smooth muscle is a type of involuntary muscle found in various organs, including the stomach. It is responsible for the peristaltic movements that help in the digestion of food. When food enters the stomach, smooth muscle contractions facilitate the mixing and propulsion of food through the digestive tract.
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Smooth Muscle Tissue
Peristalsis
Peristalsis is a coordinated, wave-like muscle contraction that moves food through the digestive system. In the stomach, peristaltic contractions help mix food with gastric juices, aiding in digestion. This process is crucial for ensuring that food is properly broken down and moved along the gastrointestinal tract.
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Gastrointestinal Response to Food
The gastrointestinal system responds to the presence of food through various mechanisms, including the release of hormones and the activation of smooth muscle. When food enters the stomach, it triggers reflexes that enhance muscle contractions, ensuring effective digestion and nutrient absorption. This response is essential for maintaining digestive health.
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Related Practice
Textbook Question
How does absorption of lipids differ from absorption of carbohydrates and proteins in the small intestine?
a. Lipids are absorbed into a capillary; carbohydrates and proteins are absorbed into a lacteal.
b. Lipids are not absorbed in the small intestine.
c. Lipids are absorbed into a lacteal; carbohydrates and proteins are absorbed into a capillary.
d. They are all absorbed into the same structure.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The esophageal and pharyngeal phases of swallowing are mediated by the swallowing reflex of the brainstem and the enteric nervous system.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. During eating, the small intestine exhibits motion in the migrating motor complex pattern.
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Textbook Question
The primary hormone that triggers the secretion of pancreatic juice and bile is:
a. Gastric inhibitory peptide
b. Cholecystokinin
c. Motilin
d. Somatostatin
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Textbook Question
Which of the following occurs/occur during the cephalic phase of gastric acid secretion?
a. Stimulation of gastrin and histamine release
b. Direct stimulation of parietal cells
c. Inhibition of somatostatin release
d. Both a and b are correct
e. All of the above are correct
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