Which type of digestion breaks down pieces of food into smal...

Which structure is the uppermost part of the alimentary canal or gastrointestinal (GI) tract?

Rationale: The alimentary canal begins at the mouth, followed by the esophagus, making the esophagus the uppermost structure listed.

All about Bile is true EXCEPT:

Rationale: Bile is formed by hepatocytes, not the gallbladder, which only concentrates and stores it.

Starch is digested to maltose by the enzyme amylase. According to the 'lock and key' hypothesis, which is the 'key' and which is the 'lock'?

Rationale: In the lock and key model, the enzyme (amylase) is the key that specifically binds to the substrate (starch), acting as the lock.

Which of the following is not a major gastrointestinal hormone?

Rationale: Epinephrine is not a gastrointestinal hormone; it is primarily involved in the sympathetic nervous system.

Obstruction of the common bile duct by gallstones would most likely affect the digestion of:

Rationale: Bile is essential for the emulsification and digestion of fats. An obstruction in the common bile duct would impair fat digestion.

Digestive System Questions