2025 LPN Entrance Practice Exam – Complete Preparation Guide

Question: 1 / 400

What is the primary function of the digestive system?

Protection from disease

Production of hormones

Indigestion and breakdown of food

The primary function of the digestive system is to transform food into energy and nutrients that the body can use. This process involves the indigestion and breakdown of food through mechanical and chemical means. As food is consumed, it travels through the digestive tract where it is mixed, disassembled, and converted into smaller, absorbable components. These components, including carbohydrates, proteins, and fats, are then broken down into their simplest forms, allowing for absorption into the bloodstream. This system plays a crucial role in maintaining bodily functions by providing the necessary nutrients for growth, repair, and overall energy. Understanding this function is essential for recognizing how the body utilizes food and nutrients effectively.

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Absorption of oxygen

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