Prolactin activates

Gonadotropic hormones are .....

Oxytocin is used for which of the following?

$A$ patient complains of constant thirst,excessive passing of urine,and low blood pressure. When the doctor checked the patient's blood glucose and blood insulin levels,the levels were normal or slightly low. The doctor diagnosed the condition as diabetes insipidus. However,the doctor decided to measure one more hormone in the patient's blood. Which hormone does the doctor intend to measure?

Adenohypophysis in humans consists of two portions:

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.