Digestive System Quiz
Questions: 16 · 10 minutes
1. Food leaving the stomach through the pyloric sphincter enters which section next?
Duodenum
Jejunum
Cecum
Ileum
2. A gland behind the stomach sends digestive enzymes and bicarbonate into the small intestine. Which organ is being described?
Pancreas
Gallbladder
Liver
Spleen
3. A swallowed bite has passed through the pharynx and is traveling toward the stomach. Which structure is it in?
Trachea
Esophagus
Duodenum
Colon
4. If the stomach produced much less pepsin, which digestive task would be affected most directly?
Beginning starch digestion in the mouth
Emulsifying fats in the small intestine
Beginning the digestion of proteins in the stomach
Absorbing water in the large intestine
5. Wave-like muscular contractions move a swallowed meal along the digestive tract. What is this movement called?
Segmentation
Mastication
Emulsification
Peristalsis
6. Stool remains in the colon longer than usual. Which normal colon function can make the stool become harder?
Removing water from the intestinal contents
Releasing strong acid into the stool
Storing bile for fat digestion
Absorbing most amino acids
7. Acid repeatedly moves from the stomach into the esophagus. Which structure normally helps limit this backward flow?
Pyloric sphincter
Internal anal sphincter
Ileocecal valve
Lower esophageal sphincter
8. During swallowing, which structure helps keep food from entering the larynx and airway?
Uvula
Pyloric sphincter
Soft palate
Epiglottis
9. Which structure is the final muscular outlet through which feces leave the digestive tract?
Rectum
Anus
Pylorus
Ileocecal valve
10. Suppose the villi lining the small intestine become flattened. What is the most direct likely effect?
Food would no longer be moved by swallowing
The liver would stop producing bile
Nutrient absorption would decrease because surface area is reduced
The large intestine would produce more stomach acid
11. A blockage prevents fluid from traveling through the pancreatic duct. Which delivery to the duodenum would be reduced most directly?
Bile produced by the liver
Pancreatic enzymes and bicarbonate
Saliva containing amylase
Hydrochloric acid from the stomach
12. Which structure primarily stores feces temporarily before elimination?
Cecum
Sigmoid colon
Appendix
Rectum
13. Bile enters the small intestine while a fatty meal is being digested. What does bile do most directly?
Neutralizes all acid throughout the digestive tract
Splits proteins into amino acids
Disperses large fat globules into smaller droplets
Breaks starch directly into simple sugars
14. Which large organ in the upper right abdomen produces bile and processes many nutrients absorbed from the intestine?
Gallbladder
Pancreas
Liver
Stomach
15. Where does most absorption of digested nutrients into the blood or lymph take place?
Stomach
Small intestine
Large intestine
Esophagus
16. A plain cracker begins to taste slightly sweet after being chewed for a while. Which enzyme helps explain this change?
Salivary amylase
Gastric lipase
Pepsin
Trypsin