Answer: A
Explanation:
"That's what evolution is all about: tiny changes in organisms of a species over a huge amount of time."
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.
Cardiac muscle is found in only the heart because the heart is also called cardiac and said to have cardiac muscle.the answer is b. hope this helps :)
Option1) a cell membrane.
Option2) kinetic energy.
If none of these options are right. Can I please have the right answer, I would love to know.