<span>No they don't,they have to work together for an organ to function.</span>
The answer is A. It twirls like a helix and has 2 strands
Stretching of the atrial muscle cells releases a hormone called atrial natriuretic factor (ANF). ANF relaxes the juxtaglomerular (JG) cells of the afferent arteriole and thereby increases GFR and urine output.