The relatively few ________ residing in connective tissues engulf damaged or dead cells or invading pathogens, and release chemicals that attract many more cells to activate the immune system.
A) mast cells
B) mesenchymal cells
C) fibrocytes
D) fixed macrophages
E) monocytes

Question

Quizplus · Accepted Answer

Fixed macrophages reside in connective tissues and are responsible for engulfing damaged or dead cells or invading pathogens and releasing chemicals to activate the immune system. Mast cells release chemicals to help with inflammation while mesenchymal cells and fibrocytes are responsible for producing and maintaining the extracellular matrix. Monocytes are circulating immune cells that can differentiate into macrophages but are not necessarily localized to connective tissues.

The Relatively Few ________ Residing in Connective Tissues Engulf Damaged