Question

Figure 5.5 Which of the following statements about the digestive sy stem is false? a. Chyme is a mixture of food and digestive juices that is produced in the stom a b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.

Short answer

a) Chyme is a mixture of food and digestive juices that is produced in the stomach. b) Food enters the large intestine before the small intestine. c) In the small intestine, chyme mixes with bile, which emulsifies fats. d) The stomach is separated from the small intestine by the pyloric sphincter. Answer: b) Food enters the large intestine before the small intestine.

Step-by-step solution

Read and understand all the statements

Go through each of the given statements and make sure you comprehend them. Everything you know about the digestive system will be helpful in solving this exercise.

Verify Statement a

"Chyme is a mixture of food and digestive juices that is produced in the stomach." This statement is true. Chyme is created in the stomach through the action of stomach muscles, acid, and enzymes. The chyme is then moved further along the digestive tract for further processing.

Verify Statement b

"Food enters the large intestine before the small intestine." This statement is false. Food enters the small intestine after being processed in the stomach. The small intestine is where most digestion and nutrient absorption take place. Next, the food moves on to the large intestine for further absorption and the formation of feces.

Verify Statement c

"In the small intestine, chyme mixes with bile, which emulsifies fats." This statement is true. Bile, which is produced by the liver and stored in the gallbladder, is released into the small intestine to emulsify fats, making them easier to digest.

Verify Statement d

"The stomach is separated from the small intestine by the pyloric sphincter." This statement is true. The pyloric sphincter is a ring-like muscle that controls the passage of chyme from the stomach to the small intestine. It regulates the release of chyme into the small intestine to ensure proper digestion.

Identify the false statement

Based on the verification of all statements, the only false statement is option b: "Food enters the large intestine before the small intestine." This statement is incorrect because food actually enters the small intestine first, where most digestion and absorption processes occur, before moving on to the large intestine.