Endocrine System: Receptors and Signal Transmission
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Questions and Answers

What is one location where different types of hormones can bind for their actions to initiate?

  • On the surface of the cell membrane (correct)
  • Inside the mitochondria
  • In the cytoplasm
  • In the nucleus
  • Which type of effect among hormones involves one hormone enhancing the responsiveness of a target organ to another hormone?

  • Antagonistic effects
  • Synergistic effects
  • Additive effects
  • Permissive effect (correct)
  • Which term describes the mechanism in which one hormone opposes the effects of another hormone?

  • Permissive effect
  • Complementary effects
  • Synergistic effects
  • Antagonist effects (correct)
  • What is one of the roles of hormones in the endocrine system?

    <p>Enhance or inhibit functions of the target organs or glands</p> Signup and view all the answers

    In hormonal action, what is the first step that hormones need to take at the target cell?

    <p>Bind to specific receptors at the target cell</p> Signup and view all the answers

    What type of effect involves two hormones acting on different stages of a physiological procedure?

    <p>Complementary effects</p> Signup and view all the answers

    What is the physiological effect of growth hormone on protein metabolism?

    <p>Increase rate of protein synthesis</p> Signup and view all the answers

    Which of the following tissues is NOT stimulated for growth by growth hormone?

    <p>Pancreas</p> Signup and view all the answers

    What is the result of hypersecretion of growth hormone during adulthood?

    <p>Acromegaly</p> Signup and view all the answers

    Which type of hormones regulate the concentration of second messengers in the cytoplasm?

    <p>Peptide hormones</p> Signup and view all the answers

    Where do hydrophilic hormones bind their receptors?

    <p>Cell membrane</p> Signup and view all the answers

    Which hormone acts as a mediator in the liver for the growth hormone effect?

    <p>Somatomedins (insulin-like growth factor)</p> Signup and view all the answers

    What is the effect of growth hormone on fat metabolism?

    <p>Cause release of fatty acids from adipose tissue</p> Signup and view all the answers

    What is the main site of action for steroid hormones?

    <p>Nucleus</p> Signup and view all the answers

    How does growth hormone affect RNA translation and nuclear transcription?

    <p>Enhances RNA translation and transcription</p> Signup and view all the answers

    Which pituitary hormone stimulates the adrenal cortex to produce cortisol?

    <p>ACTH</p> Signup and view all the answers

    What is the function of vasopressin and oxytocin?

    <p>Control water balance and uterine contractions</p> Signup and view all the answers

    Which hormones act mainly on the genetic machinery of the cell?

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

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