Adrenal Gland Anatomy and Function

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Questions and Answers

What is the shape of the adrenal gland?

  • Cylindrical
  • Triangular
  • Flattened pyramidal (correct)
  • Spherical

What percentage of the adrenal gland is made up of the adrenal cortex?

  • 80-90% (correct)
  • 70-80%
  • 90-100%
  • 60-70%

What stimulates the secretion of epinephrine and norepinephrine?

  • Impulses from the hypothalamus (correct)
  • Impulses from the pancreas
  • Impulses from the pituitary gland
  • Impulses from the thyroid gland

What is the main function of the adrenal medulla?

<p>Stimulation of the fight or flight response (D)</p> Signup and view all the answers

What is the weight of each adrenal gland?

<p>3.5-5 g (A)</p> Signup and view all the answers

What is the main function of epinephrine and norepinephrine?

<p>Stimulation of the fight or flight response (A)</p> Signup and view all the answers

What is the location of the adrenal gland?

<p>Superior to the kidneys (C)</p> Signup and view all the answers

What is the percentage of epinephrine in the total secretion of the adrenal medulla?

<p>80% (C)</p> Signup and view all the answers

What is the function of the adrenal cortex?

<p>Regulation of electrolyte balance (C)</p> Signup and view all the answers

What are the effects of epinephrine and norepinephrine on the body?

<p>Dilation of airways, decreased rate of digestion, and increased heart rate and blood pressure (A)</p> Signup and view all the answers

What is the primary function of aldosterone in the body?

<p>Control of water and electrolytes (D)</p> Signup and view all the answers

What is the main androgen secreted by the adrenal gland?

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

What is the primary function of the zona reticularis in the adrenal gland?

<p>Secretion of androgens (D)</p> Signup and view all the answers

What is the effect of high levels of glucocorticoids on the immune system?

<p>Depression of immune response (C)</p> Signup and view all the answers

What is the primary function of ACTH in the body?

<p>Stimulation of glucocorticoids production (C)</p> Signup and view all the answers

What is the main cause of Addison's disease?

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

What is the primary treatment for Addison's disease?

<p>IV hydrocortisone sodium and glucose (C)</p> Signup and view all the answers

What is the characteristic facial feature of Cushing's syndrome?

<p>Moon face with round cheeks (A)</p> Signup and view all the answers

What is the effect of glucocorticoids on protein metabolism?

<p>Increase in protein catabolism (D)</p> Signup and view all the answers

What is the function of the Renin-Angiotensin-Aldosterone (RAA) loop?

<p>Control of blood pressure and volume (D)</p> Signup and view all the answers

What is the most common cause of Cushing syndrome?

<p>Pituitary Cushing syndrome (A)</p> Signup and view all the answers

Which medication is used to treat Cushing syndrome by inhibiting ACTH secretion?

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

What is the characteristic feature of Pheochromocytoma Rule of 10’s?

<p>10% occur in children, 10% bilateral, 10% occur outside the adrenal gland, and 10% are malignant (D)</p> Signup and view all the answers

Which MEN syndrome is characterized by hyperplasia and tumors of the parathyroid, pancreas, and pituitary glands?

<p>MEN Type I (D)</p> Signup and view all the answers

What is the characteristic feature of MEN Type IIb or III syndrome?

<p>Pheochromocytoma, medullary carcinoma of the thyroid, and mucocutaneous neuromas (D)</p> Signup and view all the answers

What is the most common finding in MEN Type I syndrome?

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

What is the treatment of choice for Pheochromocytoma?

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

What is the characteristic laboratory finding in Pheochromocytoma?

<p>Elevated urinary vanillylmandelic acid (VMA) and catecholamines (D)</p> Signup and view all the answers

Which syndrome is characterized by the presence of mucocutaneous neuromas?

<p>MEN Type IIb (B)</p> Signup and view all the answers

What is the inheritance pattern of Multiple Endocrine Neoplasia (MEN) syndromes?

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

Which of the following hormones is primarily produced in the Paraventricular Nuclei?

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

What is the main function of Antidiuretic Hormone (ADH) in the body?

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

Which type of diabetes is characterized by insulin deficiency due to autoimmune destruction of Beta cells?

<p>Insulin-dependent Diabetes Mellitus (IDDM) (A)</p> Signup and view all the answers

What is the primary function of Glucagon in the body?

<p>Increase blood glucose levels (D)</p> Signup and view all the answers

What is the term for the condition characterized by abnormal glucose regulation with a modestly increased risk for developing cardiovascular disease?

<p>Pre-diabetes (B)</p> Signup and view all the answers

Which of the following is a risk factor for developing Diabetes Mellitus?

<p>A family history of DM (B)</p> Signup and view all the answers

What is the term for the 'let-down' effect of milk ejection during lactation?

<p>Milk letdown reflex (C)</p> Signup and view all the answers

Which of the following cells produce pancreatic polypeptide?

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

What is the primary function of Somatostatin in the body?

<p>Inhibit both glucagon and insulin release (A)</p> Signup and view all the answers

What is the normal range of fasting glucose levels in the blood?

<p>75-99 mg/dL (C)</p> Signup and view all the answers

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