function of macula densa cells

Hii
Macula dense is a collection of specialized epithelial cells in the distal convoluted tubules that detect sodium concentration of the fluid in the tubule.
It is located near the vascular pole of the glomerulus and it's main function is to regulate blood pressure and filtration rate of the glomerulus.i hope this information helps you.
Thank you

Macula densa cells regulate filtration rate and blood pressure by detecting the concentration of sodium.