Question 1

Which of the following sequences best represents the organization of the human body from smallest to largest?

Accepted Answer

Atoms, molecules, cells, tissues, organs, systems

Question 2

You just finished lunch but smell hot pepperoni pizza and decide you must have a piece. You are responding to your:

Accepted Answer

Appetite

Question 3

Which physiological trigger will result in the sensation of hunger?

Accepted Answer

A and C

Question 4

The _____ is the region of tissue that triggers hunger in response to signals from nerve cells and messages carried by hormones.

Accepted Answer

Hypothalamus

Question 5

Which hormone is primarily responsible for stimulating hunger?

Accepted Answer

Ghrelin

Question 6

Assuming the following meals have the same amount of calories, which one should make you feel the most satiated (full)?

Accepted Answer

Turkey sandwich on whole grain bread with an apple

Question 7

Digestion begins in the _____, where _____ and _____ digestion starts the process.

Accepted Answer

Mouth, chemical, mechanical

Question 8

Which enzyme is responsible for beginning the chemical digestion of carbohydrates in the mouth?

Accepted Answer

Salivary amylase

Question 9

What is the primary function of the stomach in digestion?

Accepted Answer

Mechanical and chemical digestion of proteins and fats

Question 10

Which component of gastric juice is critical for the absorption of vitamin B$$_{12}$$?

Accepted Answer

Intrinsic factor

Question 11

Most nutrient absorption occurs in which part of the gastrointestinal tract?

Accepted Answer

Small intestine

Question 12

Which structure increases the surface area for absorption in the small intestine?

Accepted Answer

Villi and microvilli (brush border)

Question 13

Fat-soluble nutrients are absorbed into which system before entering the bloodstream?

Accepted Answer

Lymphatic vessels

Question 14

Which of the following is NOT a function of the gut microbiome?

Accepted Answer

Producing insulin

Question 15

Which GI tract disorder is characterized by the erosion of the stomach or duodenal lining, often due to Helicobacter pylori infection?

Accepted Answer

Peptic ulcer

Question 16

A patient presents with abdominal cramps, bloating, and alternating diarrhea and constipation. Which disorder is most likely?

Accepted Answer

Irritable bowel syndrome (IBS)

Question 17

Which of the following best describes celiac disease?

Accepted Answer

An autoimmune disease triggered by gluten

Question 18

Which of the following is a correct equation for the chemical formula of water?

Accepted Answer

$$\mathrm{H_2O}$$

Question 19

Which process describes the movement of nutrients from the GI tract into the blood or lymph?

Accepted Answer

Absorption

Question 20

Which of the following is a plausible consequence of chronic 'leaky gut' or intestinal barrier dysfunction?

Accepted Answer

Increased risk for chronic diseases

The Gastrointestinal System: From Food to Nutrients and Disorders Related to Specific Foods

Study Guide - Practice Questions