When blood pressure is increased,which hormone is secreted from the heart?

Which hormone is secreted by the kidney?

Which one of the following flows directly into the blood from the seat of its production to act on an organ away from it?

Identify the wrong statements:
$A.$ Erythropoietin is produced by juxtaglomerular cells of the kidney.
$B.$ Leydig cells produce Androgens.
$C.$ Atrial Natriuretic factor,a peptide hormone,is secreted by the seminiferous tubules of the testes.
$D.$ Cholecystokinin is produced by the gastro-intestinal tract.
$E.$ Gastrin acts on the gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen.
Choose the most appropriate answer from the options given below:

The receptors for the hormone $Secretin$ are located in the .......

The wall of the atria of the heart secretes which of the following hormones?