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Questions and Answers
Which hormone has a localized effect on the mammary gland?
Which hormone has a localized effect on the mammary gland?
What is the primary function of the Anti-diuretic Hormone?
What is the primary function of the Anti-diuretic Hormone?
Which part of the brain is responsible for regulating the production and secretion of hormones from the pituitary gland?
Which part of the brain is responsible for regulating the production and secretion of hormones from the pituitary gland?
Which hormone produced by the anterior pituitary gland has a generalized effect on the body?
Which hormone produced by the anterior pituitary gland has a generalized effect on the body?
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What is the name of the tract that connects the hypothalamus to the posterior pituitary gland?
What is the name of the tract that connects the hypothalamus to the posterior pituitary gland?
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Where are the posterior pituitary hormones initially synthesized?
Where are the posterior pituitary hormones initially synthesized?
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What is the mechanism of hormone release from the posterior pituitary?
What is the mechanism of hormone release from the posterior pituitary?
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What are the proteins that combine with posterior pituitary hormones during transportation?
What are the proteins that combine with posterior pituitary hormones during transportation?
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What stimulates the release of hormones from the posterior pituitary?
What stimulates the release of hormones from the posterior pituitary?
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Where do the released hormones from the posterior pituitary enter the general circulation?
Where do the released hormones from the posterior pituitary enter the general circulation?
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What type of hormones does the posterior lobe of the pituitary secrete?
What type of hormones does the posterior lobe of the pituitary secrete?
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Which of the following hormones is NOT secreted by the posterior pituitary?
Which of the following hormones is NOT secreted by the posterior pituitary?
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What is the primary function of antidiuretic hormone (ADH) secreted by the posterior pituitary?
What is the primary function of antidiuretic hormone (ADH) secreted by the posterior pituitary?
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Which lobe of the pituitary gland is responsible for secreting antidiuretic hormone (ADH) and oxytocin?
Which lobe of the pituitary gland is responsible for secreting antidiuretic hormone (ADH) and oxytocin?
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What is the relationship between the hypothalamus and the posterior pituitary?
What is the relationship between the hypothalamus and the posterior pituitary?
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Study Notes
Posterior Pituitary Hormones
- Posterior lobe of the pituitary secretes two peptide hormones: antidiuretic hormone (ADH) and oxytocin.
Hormone Synthesis and Release
- Hormones of the posterior pituitary are initially synthesized in the cell bodies of the supraoptic and paraventricular nuclei of the hypothalamus.
- Hormones are transported in combination with "carrier" proteins called neurophysins down to the nerve ending in the posterior pituitary.
- Stimulation of the hypothalamic nuclei initiates action potentials in their neurons, transmitted downward along the fibers from the supraoptic or paraventricular nuclei.
- Reaching the nerve ending, causes release of hormone by the usual secretory mechanism of exocytosis.
- Released hormone is absorbed into adjacent capillaries and reaches the general circulation.
Antidiuretic Hormone (ADH)
- Also known as antidiuretic hormone.
- Released from the posterior pituitary.
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Description
Learn about the peptide hormones secreted by the posterior lobe of the pituitary gland, including ADH and oxytocin.
