CAS BI 325 Chapter Notes - Chapter 15: Suprachiasmatic Nucleus, Anterior Pituitary, Posterior Pituitary
2 Jan 2018
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Document Summary
Sits below the thalamus along the walls of the 3rd ventricle. Integrates somatic and visceral responses in accordance with the needs of the brain. Other cells of this region control the ans regulating outflow of the sympathetic and parasympathetic innervation of the visceral organs. Neurosecretory neurons extend their axons towards the pituitary gland--control attention. Magnocellular neurosecretory cells release the neurohormone peptides . Ex: body deprived of h2o: b. volume decreases; salt concentration increases. -talks to kidneys resulting in water retention & reduction of urine production. (adh) regulates blood volume & salt concentration. Angiotensin i breaks down to form sm peptide hormone angiotensin ii direct effect on. Angiotensin ii also detected by the kidney & b. vessels increasing b. pressure blood-brain barrier. Project to the hypothalamus and activate vasopressin-containing. Also activates cells in hypo"s lateral area producing an overwhelming thirst secretory cells influencing the behavior to drink. -synthesizes and secretes a wide range of hormones that regulate secretions from other glands.
