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Ch. 14 The Digestive System and Body Metabolism
Marieb - Essentials of Human Anatomy & Physiology 13th Edition
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Not the one you use?Change textbook
Chapter 14, Problem 4c

Match the letter of the digestive organ shown in the figure with its function.
___ churning occurs here
Illustration of the human digestive system with labeled organs; highlights where churning occurs.

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1
Step 1: Understand the concept of 'churning' in the digestive system. Churning refers to the mechanical mixing of food with digestive juices to break it down into smaller pieces and facilitate digestion. This process is typically associated with the stomach.
Step 2: Identify the organ responsible for churning in the digestive system. The stomach is the primary organ where churning occurs due to the contraction of its muscular walls.
Step 3: Review the anatomy of the stomach. The stomach has three layers of smooth muscle (longitudinal, circular, and oblique) that work together to produce the churning motion.
Step 4: Locate the stomach in the figure provided. Match the letter corresponding to the stomach with the function of churning.
Step 5: Verify your answer by ensuring that the function described (churning) aligns with the anatomical and physiological role of the stomach in digestion.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Digestive System Organs

The digestive system consists of various organs, each with specific functions in the process of digestion. Key organs include the mouth, stomach, small intestine, and large intestine. Understanding the role of each organ is essential for matching them with their respective functions, such as churning, absorption, and waste elimination.
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Organs of the Digestive System

Churning

Churning is a mechanical process that occurs primarily in the stomach, where food is mixed with gastric juices. This action helps break down food into smaller particles, facilitating digestion and nutrient absorption. Recognizing where churning occurs is crucial for correctly identifying the digestive organ in the question.
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Functions of the Digestive System

Function Matching

Function matching involves associating specific organs with their roles in the digestive process. This requires knowledge of both the anatomy of the digestive system and the physiological processes that occur within each organ. Accurate matching is essential for understanding how the digestive system operates as a whole.
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Functional Groups