The body's chemical plant
Before you read
Test yourself first: 5 questions
Question 1 of 5
Bile is produced by the liver and stored in the:
Answer: A. The liver produces bile continuously; the gallbladder concentrates and stores it, releasing it into the duodenum when fat arrives.
Question 2 of 5
The liver produces ____, which aids in the digestion of fats.
Answer: B. The liver makes bile (stored in the gallbladder), which emulsifies fats for digestion.
Question 3 of 5
Surfactant in the alveoli functions to:
Answer: A. Surfactant lowers surface tension and prevents alveolar collapse at the end of expiration. Mucus and cilia trap particles; the nasal passages warm and humidify air.
Question 4 of 5
Which organ produces bile?
Answer: A. Liver makes bile, gallbladder stores it, and both empty into the duodenum. Bile emulsifies fat; it is not an enzyme.
Question 5 of 5
Which best describes the role of hemoglobin?
Answer: A. Hemoglobin is the oxygen carrier. Low hemoglobin means anemia and reduced oxygen delivery, whatever the cause.
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