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Questions and Answers
Receptors for all of the hypophysiotropic hormones are coupled to G-proteins.
Receptors for all of the hypophysiotropic hormones are coupled to G-proteins.
False
TRH is a hypophysiotropic hormone.
TRH is a hypophysiotropic hormone.
True
VIP stands for Very Important Peptide.
VIP stands for Very Important Peptide.
False
G-proteins are involved in the regulation of hypophysiotropic hormones.
G-proteins are involved in the regulation of hypophysiotropic hormones.
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Hypothalamic regulation is unrelated to hormonal function.
Hypothalamic regulation is unrelated to hormonal function.
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CRH-binding protein is only found in the peripheral circulation.
CRH-binding protein is only found in the peripheral circulation.
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CRH-binding protein activates CRH in the peripheral circulation.
CRH-binding protein activates CRH in the peripheral circulation.
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CRH-binding protein is found in the cytoplasm of corticotropes in the anterior pituitary.
CRH-binding protein is found in the cytoplasm of corticotropes in the anterior pituitary.
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CRH-binding protein is only involved in receptor internalization.
CRH-binding protein is only involved in receptor internalization.
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CRH-binding protein is involved in the function of corticotropes.
CRH-binding protein is involved in the function of corticotropes.
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The anterior pituitary secretes five hormones.
The anterior pituitary secretes five hormones.
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Adrenocorticotropic hormone is also known as corticotropin.
Adrenocorticotropic hormone is also known as corticotropin.
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The anterior pituitary secretes only one hormone.
The anterior pituitary secretes only one hormone.
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An increase in intracellular Ca2+ levels is triggered.
An increase in intracellular Ca2+ levels is triggered.
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The anterior pituitary secretes seven hormones.
The anterior pituitary secretes seven hormones.
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The circumventricular organs are located inside the blood–brain barrier.
The circumventricular organs are located inside the blood–brain barrier.
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The circumventricular organs are not permeable.
The circumventricular organs are not permeable.
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The circumventricular organs are responsible for hormonal regulation.
The circumventricular organs are responsible for hormonal regulation.
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The blood–brain barrier is permeable.
The blood–brain barrier is permeable.
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There are no organs outside the blood–brain barrier.
There are no organs outside the blood–brain barrier.
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In humans, the posterior pituitary gland secretes oxytocin and arginine vasopressin.
In humans, the posterior pituitary gland secretes oxytocin and arginine vasopressin.
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The posterior pituitary gland secretes only one hormone, oxytocin.
The posterior pituitary gland secretes only one hormone, oxytocin.
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Arginine vasopressin is also known as AVP.
Arginine vasopressin is also known as AVP.
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The posterior pituitary gland secretes insulin.
The posterior pituitary gland secretes insulin.
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Oxytocin and arginine vasopressin are secreted by the anterior pituitary gland.
Oxytocin and arginine vasopressin are secreted by the anterior pituitary gland.
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Study Notes
Anterior Pituitary Hormones
- The anterior pituitary secretes six hormones, including adrenocorticotropic hormone (corticotropin, ACTH) and TRH.
- Other hormones secreted by the anterior pituitary include VIP and several others.
Hypothalamic Regulation of Hormonal Function
- Receptors for most hypophysiotropic hormones are coupled to G-proteins.
- A CRH-binding protein in the peripheral circulation inactivates CRH.
- This protein is also found in the cytoplasm of corticotropes in the anterior pituitary, where it may play a role in receptor internalization.
Circumventricular Organs
- There are areas of high permeability outside the blood–brain barrier, known as circumventricular organs (see Chapter 33).
Posterior Pituitary Secretions
- In most mammals, the posterior pituitary gland secretes two hormones: arginine vasopressin (AVP) and oxytocin.
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Description
Test your knowledge of the six hormones secreted by the anterior pituitary gland, including adrenocorticotropic hormone and others.
