Endocrinology Introduction: Endocrine System and Hormones

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Questions and Answers

Which type of hormone is synthesized in the endocrine glands as larger precursor molecules called preprohormones and circulate in blood as free hormone?

  • Protein hormones (correct)
  • Steroid hormones
  • Modified amine hormones
  • Amines hormones

What is the characteristic of the half-life of protein hormones?

  • Variable
  • Short (minutes) (correct)
  • Dependent on the target cells
  • Long (days)

How are steroid hormones synthesized?

  • Stored as larger precursor molecules
  • From cholesterol in the cytoplasm by multienzyme processes (correct)
  • Directly from the endocrine glands
  • From amino acids as preprohormones

What allows steroid hormones to enter the bloodstream?

<p>Freely diffuse across the plasma membrane (A)</p> Signup and view all the answers

Which type of hormone is bound to specific plasma proteins once released into the bloodstream?

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

What are cells that contain receptors for specific hormones called?

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

Which category of endocrine disorder involves a problem with the gland that produces the hormone?

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

What is the main challenge in correcting hypersecretion of a hormone?

<p>Inhibiting the gland without causing destruction of endocrine tissue (A)</p> Signup and view all the answers

What is the typical treatment for hyposecretion?

<p>Hormone replacement therapy (B)</p> Signup and view all the answers

Which hormone stimulates the secretion of ACTH?

<p>Corticotrophin releasing hormone (CRH) (A)</p> Signup and view all the answers

What does Prolactin releasing hormone (PRH) stimulate the secretion of?

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

Which hormone is responsible for milk production in mammary glands?

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

What is the typical cause of growth hormone deficiency?

<p>Traumatic injury or pituitary tumors (D)</p> Signup and view all the answers

How is growth hormone deficiency determined?

<p>Stimulation tests involving injection of insulin (B)</p> Signup and view all the answers

What does growth hormone stimulate in most tissues?

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

What is the main challenge in correcting hypersecretion of a hormone?

<p>Inhibiting the gland without causing destruction of endocrine tissue (A)</p> Signup and view all the answers

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