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1. Blood performs which of the following primary functions in the body?

Section 10: Atelectasis, Pleurisy & Pneumothorax 47. Atelectasis is a common postoperative complication. What causes atelectasis, and why does it most commonly occur after surgery?

19. True or False: Helicobacter pylori can be transmitted between family members within a household and may recur after antibiotic treatment.

61. A patient with pancreatic cancer presents with painless jaundice. Which anatomical relationship explains this symptom?

27. The ‘apple core sign’ is a radiological finding on barium enema. What does it indicate and why is it considered pathognomonic?

27. Hereditary spherocytosis is classified as a hereditary hemolytic anemia of ‘abnormal shape.’ Why does the spherical RBC shape cause hemolytic anemia?

11. Paranasal sinus infections are clinically significant beyond causing facial pressure and pain. What additional complications can spread from the paranasal sinuses?

5. The term ‘erythropoiesis’ refers to:

5. Bile serves which specific digestive function in the duodenum?

29. Which color stool presentation is most consistent with bright red rectal bleeding from a source near the anus (such as hemorrhoids or a rectal lesion)?