Multiple Choice
Which body system is primarily responsible for preparing food for absorption into the bloodstream?
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23. The Digestive System
Introduction to the Digestive System
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the primary function of the jejunum in the digestive system?
A
Absorption of nutrients
B
Mechanical breakdown of food
C
Storage of bile
D
Production of digestive enzymes
Verified step by step guidance1
Step 1: Begin by identifying the jejunum as part of the small intestine, located between the duodenum and ileum. Its structure is specialized for its function in the digestive system.
Step 2: Understand the primary role of the small intestine, which is nutrient absorption. The jejunum, specifically, has a highly folded lining with villi and microvilli that increase surface area for absorption.
Step 3: Eliminate incorrect options by considering the anatomy and physiology of the digestive system. For example, 'Mechanical breakdown of food' primarily occurs in the mouth and stomach, not the jejunum.
Step 4: Similarly, 'Storage of bile' is a function of the gallbladder, and 'Production of digestive enzymes' is primarily associated with the pancreas and stomach, not the jejunum.
Step 5: Conclude that the primary function of the jejunum is the absorption of nutrients, as its structure and location are optimized for this purpose in the digestive process.
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