Posterior Pituitary Hormones
Decrease in ADH
Diabetes insipidus
Oxytocin
Effects: Stimulates powerful uterine contractions during birth and stimulates milk ejection (let down) in lactating mothers
ADH
Effects: Stimulates the kidneys to reabsorb more water, reducing urine output and conserving body water
Hypothalamic Hypophyseal Tract
Provides for the transport of hormones from the hypothalamus to the posterior pituitary via neurons
Oxytocin
Stimulus for Release: Nerve impulses from the hypothalamic neurons in response to cervical/uterine stretch
ADH
Stimulus for release: Nerve impulses from hypothalamic neurons in response to increased blood solute concentration or decreased blood volume
Where are the hormones secreted by the posterior pituitary made?
Synthesized in the hypothalamus and stored and released by the posterior pituitary
Oxytocin
Taget: Uterus and Mammary glands
ADH
Target: Kidneys
Which hormones are secreted by neurons?
Oxytocin and ADH