Talk to us?
👤 Welcome User
pathology - 3 Questions
Langerhans cells, found in the skin, function primarily as: 1) Phagocytic scavenger cells 2) Antigen-presenting cells 3) Mast cell precursors 4) Collagen-producing fibroblasts
Correct answer: 2) Langerhans cells are dendritic antigen-presenting cells of the skin, considered part of the reticuloendothelial/mononuclear phagocyte lineage, but they are notably not phagocytic themselves their role is antigen capture and presentation to T cells.
A newborn presenting with intestinal obstruction due to inspissated, thick meconium should raise suspicion for: 1) Cystic fibrosis (meconium ileus) 2) Hirschsprung disease alone 3) Normal variant 4) Necrotizing enterocolitis
Correct answer: 1) Meconium ileus obstruction of the terminal ileum by abnormally viscid, protein-rich meconium is a classic presenting feature of cystic fibrosis in neonates (10-15% of CF patients) and should prompt a sweat chloride test.
What phenomenon is responsible when a person sets off the metal detector at the airport, despite removing their watch, belt buckle, and every other obvious source of metal?1) Argyria2) Gall stones3) Hemochromatosis4) Kidney stones
Hemochromatosis is a condition characterized by excessive iron accumulation in the body, which can lead to a false positive on metal detectors due to high iron levels in tissues.
MCQ