Exploring the Stages of Digestion

How long does it take for food to travel from the mouth to the stomach?

• 5-10 minutes

• 1-2 minutes

• 30-60 seconds

• 5-8 seconds

What is the name of the muscle that allows food to enter the stomach from the esophagus?

• Cardiac sphincter

• Pyloric sphincter

• Lower esophageal sphincter

• Upper esophageal sphincter

What can excessive stomach acid lead to?

• Constipation

• Diarrhea

• Heartburn

• Ulcer

Which type of food takes the longest to digest?

• Fats

• Proteins

• Simple carbohydrates

• Fiber

What increases the surface area for nutrient absorption in the small intestine?

• Microvilli

• Villi

• Rugae

• Plicae circulares

What is the primary function of the large intestine?

• Digestion of carbohydrates

• Protein synthesis

• Water absorption

• Nutrient absorption

How long does it take for food to move through the large intestine?

• About 48 hours

• About 30 hours

• About 24 hours

• About 12 hours

What condition might result if food moves too quickly through the large intestine?

• Heartburn

• Diarrhea

• Constipation

• Ulcers

What causes the characteristic odor of feces?

• Bacteria

• Digestive enzymes

• Stomach acid

• Undigested food

What is the role of the rectum?

• To produce digestive enzymes

• To store stool until evacuation

• To digest food

• To absorb nutrients