3 Questions
What is the definition of paracrine secretion?
Cells secrete substances into the extracellular matrix that affect nearby cells by diffusion
Which cells secrete vasodilators that act on smooth muscles to relax vascular walls?
Endothelial cells
What is the main difference between paracrine and endocrine secretion?
Paracrine secretion affects nearby cells, while endocrine secretion affects distant cells
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