Podcast
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 (B)
TRH is a hypophysiotropic hormone.
TRH is a hypophysiotropic hormone.
True (A)
VIP stands for Very Important Peptide.
VIP stands for Very Important Peptide.
False (B)
G-proteins are involved in the regulation of hypophysiotropic hormones.
G-proteins are involved in the regulation of hypophysiotropic hormones.
Hypothalamic regulation is unrelated to hormonal function.
Hypothalamic regulation is unrelated to hormonal function.
CRH-binding protein is only found in the peripheral circulation.
CRH-binding protein is only found in the peripheral circulation.
CRH-binding protein activates CRH in the peripheral circulation.
CRH-binding protein activates CRH in the peripheral circulation.
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.
CRH-binding protein is only involved in receptor internalization.
CRH-binding protein is only involved in receptor internalization.
CRH-binding protein is involved in the function of corticotropes.
CRH-binding protein is involved in the function of corticotropes.
The anterior pituitary secretes five hormones.
The anterior pituitary secretes five hormones.
Adrenocorticotropic hormone is also known as corticotropin.
Adrenocorticotropic hormone is also known as corticotropin.
The anterior pituitary secretes only one hormone.
The anterior pituitary secretes only one hormone.
An increase in intracellular Ca2+ levels is triggered.
An increase in intracellular Ca2+ levels is triggered.
The anterior pituitary secretes seven hormones.
The anterior pituitary secretes seven hormones.
The circumventricular organs are located inside the blood–brain barrier.
The circumventricular organs are located inside the blood–brain barrier.
The circumventricular organs are not permeable.
The circumventricular organs are not permeable.
The circumventricular organs are responsible for hormonal regulation.
The circumventricular organs are responsible for hormonal regulation.
The blood–brain barrier is permeable.
The blood–brain barrier is permeable.
There are no organs outside the blood–brain barrier.
There are no organs outside the blood–brain barrier.
In humans, the posterior pituitary gland secretes oxytocin and arginine vasopressin.
In humans, the posterior pituitary gland secretes oxytocin and arginine vasopressin.
The posterior pituitary gland secretes only one hormone, oxytocin.
The posterior pituitary gland secretes only one hormone, oxytocin.
Arginine vasopressin is also known as AVP.
Arginine vasopressin is also known as AVP.
The posterior pituitary gland secretes insulin.
The posterior pituitary gland secretes insulin.
Oxytocin and arginine vasopressin are secreted by the anterior pituitary gland.
Oxytocin and arginine vasopressin are secreted by the anterior pituitary gland.
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.
