Iodine is associated with

Blood pressure is controlled by

$A$ : Prolactin is unique among the pituitary hormones as it is under predominant inhibitory control of hypothalamus.
$R$ : The controlling agent is neurotransmitter dopamine produced by tuberoinfundibular neuron.

Treatment with alloxan destroys

Hormone that control other endocrine glands

$A$ : Our body secretes adrenaline in intense cold.
$R$ : Adrenaline raises metabolic rate.