Which of the following secretions causes a decrease in blood pressure?

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

Secretin is a

Identify the four major hormones of the $GI$ tract from the list given below:
$I$. Gastrin
$II$. Secretin
$III$. Cholecystokinin
$IV$. $ACTH$
$V$. $MSH$
$VI$. $GIP$
The correct option is:

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:

Find the correctly matched pair.