If the glomerular fi ltration rate is too high, the macula densa sends a message to the afferent arteriole. What is the effect of this message? A. granular cells of arteriole walls release renin B. afferent arteriole dilates C. it inhibits the action of ATP and adenosine on the afferent arteriole D. afferent arteriole constricts
Option D. Constricting the afferent arteriole will lower the rate of flow of blood into the glomerulus. This will lower the Glomerulus filteration rate.
