Digestive system: Parts and Functions

How long does it take for the stomach to empty after a meal?

• 2-3 hours

• 4-6 hours

• 6-8 hours

• 1-2 hours

Where does digestion begin?

• Mouth

• Stomach

• Esophagus

• Small Intestine

Tags

NGSS.MS-LS1-7

What is the muscular tube that moves food from the mouth to the stomach?

• Esophagus

• Trachea

• Pharynx

• Duodenum

What is the enlarged and muscular sac-like organ that digests proteins?

• Liver

• Pancreas

• Stomach

• Intestine

Which two organs are not part of the hollow tube of the digestive system?

• Stomach and intestines

• Pancreas and liver

• Esophagus and rectum

• Gallbladder and appendix

What is the primary function of the mouth in the digestive system?

• To mechanically break down food and mix it with saliva for easier swallowing.

• To absorb nutrients from digested food.

• To produce digestive enzymes for breaking down food.

• To store food before it is digested.

What role does the esophagus play in digestion?

• It absorbs nutrients from food.

• It transports food from the mouth to the stomach through peristalsis.

• It secretes digestive enzymes.

• It stores food before it enters the stomach.

What is the function of the stomach in digestion?

• To absorb nutrients from food.

• To store food, mix it with gastric juices, and begin the digestion of proteins.

• To break down carbohydrates into simple sugars.

• To filter toxins from the blood.

What is peristalsis?

• The wave-like muscle contractions that move food through the digestive tract.

• A type of digestive enzyme that breaks down proteins.

• The process of absorbing nutrients in the intestines.

• The secretion of bile from the liver.

What are the main digestive enzymes produced by the pancreas?

• Amylase, lipase, and proteases.

• Glucose, fructose, and sucrose.

• Pepsin, trypsin, and chymotrypsin.

• Cellulase, maltase, and lactase.