Anatomy JG cells (juxta glomerular apparatus) are A Macula densa B Smooth muscullar cells of afferent aeriole C Smooth muscullar cells of efferent aeriole D Islets of epithelial cells 💡 Explanation JG cells (juxta glomerular apparatus) are ✓ Correct Answer: B. Smooth muscullar cells of afferent aeriole