ANP 1105 Lecture Notes - Lecture 3: Ovulation, Hypophyseal Portal System, Adrenocorticotropic Hormone

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Frank Feiner

Document Summary

The hypothalamus controls release of hormones from the pituitary gland in two different ways. Hypothalamus is the portion of the brain that links cns to endocrine system via pituitary gland. Pituitary gland is the size and shape of a pea on a stalk. Its stalk, the funnel shaped infundibulum, connects the glans to the hypothalamus superiorly. Posterior pituitary: the posterior pituitary (lobe) stores neurohormones made by hypothalamus neurons transported down their axons, contains the axon terminals, part of brain not a true endocrine gland. Anterior pituitary: a true endocrine gland, manufactures/releases several hormones. Hypothalamic neurohormones *not important: oxytocin, antidiuretic hormone (adh) Hypothalamus - posterior pituitary hormones *important: oxytocin, antidiuretic hormone (adh, these are secreted because of action potentials traveling down axon of hypothalamic neurons. Hypothalamus anterior pituitary hormones: for hypothalamic releasing & inhibiting hormones *not important. Pih (prolactin-inhibiting hormone, aka dopamine: anterior pituitary * important. These are secreted because of hypothalamic releasing and inhibiting hormones.