ENDOCRINE part 1

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Questions and Answers

Bradykinin synthesises which of the following ?

  • CCK
  • EPO
  • Nitric Oxide (correct)
  • Somatostatin

Which type of GPCR does Angiotensin II most commonly act via ?

  • Gq (correct)
  • Gi
  • Gs
  • Gp

The posterior pituitary is divided into how many segments ?

  • 1
  • 2 (correct)
  • 3
  • 4

Which layer of the adrenal cortex produces cortisol?

<p>Zona fasciculata (A)</p> Signup and view all the answers

What is the primary hormone produced by the Zona glomerulosa?

<p>Aldosterone (C)</p> Signup and view all the answers

What stimulates the biosynthesis of aldosterone in the Zona glomerulosa?

<p>Angiotensin II (B)</p> Signup and view all the answers

Which adrenal hormone is involved in mineralocorticoid activity?

<p>Aldosterone (A)</p> Signup and view all the answers

In which layer of the adrenal cortex is androgen produced ?

<p>Zona reticularis (A)</p> Signup and view all the answers

What are the main adrenal androgens?

<p>DHEA and androstenedione (B)</p> Signup and view all the answers

What is the consequence of too much aldosterone?

<p>Hypertension and hypokalemia (D)</p> Signup and view all the answers

In which zone of the adrenal gland is glucocorticoid excess observed?

<p>Zona fasciculata (A)</p> Signup and view all the answers

What hormone is released by adrenal medullary cells in response to stress?

<p>Adrenaline (B)</p> Signup and view all the answers

Which disease is characterised by hormonal overproduction in the Zona glomerulosa of the adrenal glands?

<p>Conn's syndrome (C)</p> Signup and view all the answers

Where is thyrotropin releasing hormone (TRH) produced?

<p>Hypothalamus (A)</p> Signup and view all the answers

The thyroid gland is formed from thickening of what ?

<p>Endoderm (B)</p> Signup and view all the answers

Eicosanoids are derived from what ?

<p>Fatty acids (D)</p> Signup and view all the answers

Which of the following is true in regards to receptor antagonists ?

<p>Stimulates up-regulation of receptors (B)</p> Signup and view all the answers

Which of the following is true ?

<p>GH is highest during the night and cortisol is highest during the morning (D)</p> Signup and view all the answers

Which of the following is a sub-section of the anterior pituitary gland ?

<p>Pars intermedia (D)</p> Signup and view all the answers

What is the primary function of the hormones stored in the posterior pituitary gland?

<p>Conservation of body water (B)</p> Signup and view all the answers

Which nuclei give rise to terminals that are found in the posterior pituitary gland?

<p>Supraoptic and paraventricular nuclei (D)</p> Signup and view all the answers

Which of the following reactions does aromatase catalyse in steroidogenesis ?

<p>Conversion of androstenedione into estrone (B)</p> Signup and view all the answers

Which hormone is formed from monodeiodination of T4 in both the thyroid and peripheral tissues?

<p>T3 (D)</p> Signup and view all the answers

What is the main second messenger involved in the mechanism of action of TSH receptors to stimulate thyroid hormone release?

<p>cAMP (D)</p> Signup and view all the answers

Which system does thyroid hormone mimic the actions of?

<p>Sympathetic nervous system (A)</p> Signup and view all the answers

What is the primary function of progesterone during the menstrual cycle?

<p>Inhibits uterine contractions (B)</p> Signup and view all the answers

What is the typical duration of the follicular/proliferative phase of the menstrual cycle?

<p>14-21 days (A)</p> Signup and view all the answers

What is the role of FSH during the follicular/proliferative phase of the menstrual cycle?

<p>All of the above (D)</p> Signup and view all the answers

FSH stimulates which of the following ?

<p>Granulosa cells in women (B)</p> Signup and view all the answers

Which cells produce parathyroid ?

<p>Chief cells (C)</p> Signup and view all the answers

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