The number of hormones secreted from the anterior pituitary is

The hormones oxytocin and vasopressin are secreted by

$ACTH$ is secreted by.....

Which of the following secretes luteinizing hormone?

Hormones originating in the hypothalamic neurons are released in the posterior pituitary from the ....$A$.... of neurons. The inhibitory and releasing hormones that regulate the functions of the ...$B$... pituitary reach there via ...$C$... circulatory system.
Select the correct combination of $A, B$ and $C$ in reference to the above paragraph.

The smallest endocrine gland is