Small Intestine

Question 1

What is the primary function of the small intestine?

Answer 1

The primary function of the small intestine is to digest food and absorb nutrients.

Question 2

True or False: The small intestine is the longest part of the digestive tract.

Answer 2

True

Question 3

What are the three main sections of the small intestine?

Answer 3

The duodenum, jejunum, and ileum.

Question 4

Fill in the blank: The small intestine is approximately ____ meters long in adults.

Answer 4

6 to 7

Question 5

What role does the duodenum play in digestion?

Answer 5

The duodenum is responsible for the initial digestion of food using bile and pancreatic juices.

Question 6

Multiple Choice: Which section of the small intestine is primarily involved in nutrient absorption? A) Duodenum B) Jejunum C) Ileum

Answer 6

B) Jejunum

Question 7

What is the primary role of villi in the small intestine?

Answer 7

Villi increase the surface area for absorption of nutrients.

Question 8

True or False: The small intestine absorbs water and electrolytes.

Answer 8

True

Question 9

What are microvilli?

Answer 9

Microvilli are tiny hair-like structures on the surface of intestinal cells that further increase absorption.

Question 10

Fill in the blank: The small intestine connects the stomach to the ____.

Answer 10

large intestine

Question 11

What is the function of intestinal enzymes?

Answer 11

Intestinal enzymes help break down carbohydrates, proteins, and fats into absorbable molecules.

Question 12

Multiple Choice: Which of the following is NOT absorbed in the small intestine? A) Glucose B) Amino acids C) Fiber

Answer 12

C) Fiber

Question 13

What is the role of bile in the small intestine?

Answer 13

Bile aids in the emulsification and digestion of fats.

Question 14

True or False: The ileum is primarily responsible for absorbing vitamin B12 and bile salts.

Answer 14

True

Question 15

What is peristalsis?

Answer 15

Peristalsis is the wave-like muscle contractions that move food through the digestive tract.

Question 16

Fill in the blank: The small intestine secretes ____ to neutralize stomach acid.

Answer 16

bicarbonate

Question 17

What is the significance of the small intestine’s length?

Answer 17

Its length allows for maximum digestion and absorption of nutrients.

Question 18

Multiple Choice: What is the primary type of nutrient absorbed in the jejunum? A) Lipids B) Carbohydrates C) Proteins

Answer 18

A) Lipids

Question 19

What is lactose intolerance?

Answer 19

Lactose intolerance is the inability to digest lactose due to a deficiency of the enzyme lactase.

Question 20

True or False: The small intestine has a role in immune function.

Answer 20

True

Question 21

What are Peyer’s patches?

Answer 21

Peyer’s patches are clusters of lymphoid tissue in the ileum that play a role in immune surveillance.

Question 22

Fill in the blank: The small intestine absorbs approximately ____% of the nutrients consumed.

Answer 22

90

Question 23

What is the function of the sphincter of Oddi?

Answer 23

The sphincter of Oddi regulates the flow of bile and pancreatic juice into the duodenum.

Question 24

Multiple Choice: Which nutrient is primarily absorbed in the ileum? A) Glucose B) Fat-soluble vitamins C) Proteins

Answer 24

B) Fat-soluble vitamins

Question 25

What role does the small intestine play in the digestion of carbohydrates?

Answer 25

It breaks down carbohydrates into simple sugars for absorption.

Question 26

True or False: The small intestine's lining is constantly renewed.

Answer 26

True