Use dihydroergotamine exactly as directed. Do not use more or less of it or use it more often than prescribed by your doctor. Dihydroergotamine can damage the heart and other organs if it is used too often. Dihydroergotamine should be used only to treat a migraine that is in progress.
The posterior pituitary is often termed the neurohypophysis because the hormones of this part of the pituitary are released directly from the axonal endings of their source neurons into the circulation (Figure 2.1).
In this way, it initiates the menstrual cycle. The pituitary gland, also known as the hypophysis, is a small gland connected to the hypothalamus by a stalk (called the infundibulum). The pituitary has 2 major lobes: the posterior and anterior.1  The posterior lobe is nerve tissue, and is really a downgrowth of the hypothalamus. Since it is a part of the brain, and made of nervous tissue, it has direct nervous influence. 2  It activates, controls and integrates the autonomic nervous system, and. 3  since it also acts as a gland, it's endocrine activity produces and secretes certain hormones and releasing factors.