Which of the following statements about accessory organ secretions is not true?

a. Hepatocytes produce bile, which drains out of the liver via the common hepatic ducts.

b. Saliva contains secretory IgA and lysozyme, which play an important role in preventing the growth of pathogenic bacteria in the oral cavity.

c. Pancreatic juice contains digestive enzymes and bicarbonate ions to neutralize the acidic chyme.

d. The gallbladder produces bile, which drains out of the gallbladder via the cystic duct.

Video transcript

Hi, everybody. Welcome back. Our next problem says bile is one of the secretions from the digestive system's accessory organs, which of the following states its function. A aids in the emulsification and digestion of fats. B moistens and lubricates. Food C creates an acidic environment in the stomach or d break down carbohydrates into simpler sugars. So when we think of bile, we should always, our mind should just jump straight to fats. Its function is choice a aiding in the emulsification and digestion of fats. Emulsification is important. It breaks the fats down into smaller droplets that increases their surface area. And that increased surface area allows greater access to the lipase enzymes which are what breaks down the fats. So by breaking it down into small droplets, by emulsifying the fat. It allows digestion of the fat to proceed more quickly. When we look at our other answer choices. Just to be thorough here. Choice B moistens and lubricates food. Well, this is the purpose of saliva produced by the salivary glands in the mouth. Obviously, choice c acidic environment in the stomach would be the acid produced by the stomach or specifically, you could say the gastric acid. So choice C is not our answer. And then choice D break down carbohydrates into simpler sugars. That's the role of both salivary and pancreatic amyas in the mouth and the small intestine. So some amylase is released in saliva and begins that breakdown of larger, more complex carbohydrates. And then the process is completed in the small intestine but not the main purpose of bile. So not our answer. So again, that function of bile is choice A A I DS and the emulsification and digestion of bats. See you in the next video.