Question 1

Which of the following best describes the primary function of the liver in maintaining homeostasis?

Accepted Answer

It detoxifies chemicals and metabolizes drugs, helping to regulate nutrient levels and remove waste.

Question 2

When the liver dies or fails, which of the following is most likely to occur?

Accepted Answer

Accumulation of toxins in the blood due to impaired detoxification.

Question 3

How does the large intestine differ from the small intestine in terms of absorption?

Accepted Answer

The large intestine mainly absorbs water and electrolytes, while the small intestine absorbs nutrients such as carbohydrates, proteins, and fats.

Question 4

What is the main role of bacteria in the large intestine?

Accepted Answer

They break down undigested food, produce vitamins like vitamin K, and aid in the formation of feces.

Question 5

During the movement of feces through the large intestine, what is primarily absorbed?

Accepted Answer

Water and electrolytes.

Question 6

Constipation and diarrhea are considered two sides of the same coin for the intestine because:

Accepted Answer

Both involve abnormal water absorption in the large intestine—constipation from too much absorption, diarrhea from too little.

Question 7

What happens physiologically when a person consumes too much food?

Accepted Answer

Excess nutrients are stored as fat, potentially leading to obesity and metabolic disorders.

Question 8

Which of the following is a likely consequence of consuming too little food over an extended period?

Accepted Answer

Decreased metabolic rate, loss of muscle and fat stores, and possible nutrient deficiencies.

Question 9

Energy balance is best defined as:

Accepted Answer

The difference between energy intake from food and energy expenditure through metabolism and activity.

Question 10

Which formula is used to calculate Body Mass Index (BMI)?

Accepted Answer

$$BMI = \frac{weight\ (kg)}{$$height^2$$\ (m^2$)}$$

Question 11

A patient has a BMI of 32. According to standard BMI categories, this patient is:

Accepted Answer

Obese

Question 12

Which of the following is a limitation of using BMI as a diagnostic tool?

Accepted Answer

BMI does not account for muscle mass, so athletes may be misclassified as overweight or obese.

Question 13

If a person consumes the right amount of food but not the right nutrient blend, which of the following is most likely to occur?

Accepted Answer

They may develop nutrient deficiencies or imbalances despite adequate caloric intake.

Question 14

Which of the following best explains why the liver is essential for removing toxins from the body?

Accepted Answer

The liver filters blood, metabolizes drugs, and converts harmful substances into less toxic compounds for excretion.

Question 15

Which process in the large intestine is most responsible for the formation of solid feces?

Accepted Answer

Absorption of water and electrolytes.

Question 16

A patient presents with chronic diarrhea. Which of the following is the most likely physiological explanation?

Accepted Answer

Insufficient absorption of water in the large intestine.

Question 17

Which vitamin is commonly produced by bacteria in the large intestine?

Accepted Answer

Vitamin K

Question 18

Which of the following best describes the movement of feces through the large intestine?

Accepted Answer

Peristaltic contractions move feces, allowing for water and electrolyte absorption.

Question 19

Which of the following is a side effect of both constipation and diarrhea?

Accepted Answer

Dehydration due to abnormal water absorption.

Question 20

A patient consumes a diet high in calories but low in essential nutrients. Which of the following is the most likely outcome?

Accepted Answer

Development of obesity and possible nutrient deficiencies.

Digestive System and Nutrition: Study Notes for Chapter 14

Study Guide - Practice Questions