01:830:331 Lecture Notes - Lecture 16: Posterior Pituitary, Pituitary Stalk, Anterior Pituitary
24 Jul 2016
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Document Summary
~hypothalamus controls autonomic nervous system, endocrine system, four fs. ~there"s a pituitary stalk at the base of the hypothalamus, attaches to the pituitary gland below. ~endocrine system controlled by hormones produced in hypothalamus. ~there is a system of blood vessels that connects hypothalamus to anterior pituitary gland. ~hormones made by hypothalamus are secreted by neurosecretory cells. Neurosecretory cells are located at the base of the pituitary stalk. The hormones they secrete stimulate the anterior pituitary gland to secrete hormones. Ex: gonadotropin-releasing hormone is secreted by hypothalamus pituitary release gonadotropin. ~hormones secreted by anterior pituitary gland control other endocrine glands. ~hypothalamus also makes hormones for posterior pituitary gland. Hormones get sent down the pituitary stalk, to terminal buttons of posterior pituitary gland cells. When the axon fires, the hormones are released from terminal buttons, enter circulatory system. ~two main parts of tectum superior and inferior colliculi. The colliculi are 4 bumps on the surface of the brain stem.
