Which two cell types are circled and where are they located?

Study for the CAMLPR Histology Practice Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which two cell types are circled and where are they located?

This question tests your ability to recognize where specific immune and secretory cells sit in the digestive tract. Mast cells are found in the connective tissue of the GI mucosa and submucosa, where they store and release mediators like histamine during inflammatory responses. Paneth cells are specialized secretory cells located at the base of the crypts of Lieberkühn in the small intestine; they secrete antimicrobial peptides such as defensins and lysozyme to help protect the gut from pathogens. So the two circled cells are mast cells and Paneth cells, both located in the digestive tract—mast cells in the mucosal connective tissue and Paneth cells at the base of intestinal crypts. Other options place these cells in incorrect organs (for example, Langerhans cells in the skin; Paneth cells not in the liver), so they don’t fit the circle.

This question tests your ability to recognize where specific immune and secretory cells sit in the digestive tract. Mast cells are found in the connective tissue of the GI mucosa and submucosa, where they store and release mediators like histamine during inflammatory responses. Paneth cells are specialized secretory cells located at the base of the crypts of Lieberkühn in the small intestine; they secrete antimicrobial peptides such as defensins and lysozyme to help protect the gut from pathogens. So the two circled cells are mast cells and Paneth cells, both located in the digestive tract—mast cells in the mucosal connective tissue and Paneth cells at the base of intestinal crypts. Other options place these cells in incorrect organs (for example, Langerhans cells in the skin; Paneth cells not in the liver), so they don’t fit the circle.

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