The above image has hypothalamus-> B->D->F going up and then across. Then it is showing an arrow from the hypothalamus going down and then across to C->E->smooth muslce contractions.

Match the letters from the feedback loop diagram above with their descriptions given below. 

Description  Letter  Oxytocin  Answer

  Prolactin  Answer

  Milk letdown  Answer

  Anterior pituitary  Answer

  Posterior pituitary  Answer