Lecture 9-development and hormones

Hypothalamus produce releasing hormones releasing

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Unformatted text preview: ior Pituitary Gland Mechanism • Mechanism of release is different than posterior pituitary pituitary Neurosecretory cells in hypothalamus produce ‘releasing hormones’ Releasing hormones are secreted into hypothalmicpituitary portal system Releasing hormones circulate to anterior pituitary endocrine cells to stimulate release of tropic hormones Tropic hormones circulate to target tissues to release target hormone Anterior Pituitary Neuroendocrine • Neuroendocrine cell bodies in the hypothalamus produce ‘releasing hormones’ ‘releasing Neurons terminate at the Neurons median eminence- a region above the pituitary stalk that contains blood vessels (the hypophyseal portal system) hypophyseal Releasing hormones travel Releasing through these vessels and are released in the anterior pituitary • • Anterior Pituitary n • IIn the anterior pituitary, there are additional hormone producing cells producing These cells produce ‘tropic These hormones’ hormones’ Tropic hormones are Tropic released into the bloodstream and travel to and regulate e...
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