Endocrine System Overview Quiz
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Questions and Answers

What is the primary function of the parafollicular cells (C Thyrocytes) in the thyroid gland?

  • Produce thyroxine
  • Regulate calcium intake
  • Actively transport iodine
  • Produce calcitonin (correct)

    • What is the main structural feature that gives the thyroid gland its distinctive butterfly-like appearance?

  • The thyroid follicles
  • The presence of the isthmus
  • The location on the anterior surface of the trachea
  • The two main lobes (correct)

    • What is the primary function of the follicular cells (T thyrocytes) in the thyroid gland?

  • Actively transport iodine (correct)
  • Produce calcitonin
  • Regulate calcium intake
  • Secrete thyroid hormones

    • What is the typical weight of the thymus gland in a 50-year-old individual?

    <p>12 grams</p> Signup and view all the answers

    Which of the following is not a function of the adrenal cortex?

    <p>Secretion of thyroxine</p> Signup and view all the answers

    What is the primary role of the thymus gland in the body?

    <p>Maintain immune defense</p> Signup and view all the answers

    What triggers endocrine activity by changes to the extracellular fluid?

    <p>Humoral Stimulation</p> Signup and view all the answers

    Which part of the pituitary gland contains axons of hypothalamic neurons?

    <p>Posterior Pituitary</p> Signup and view all the answers

    What is responsible for providing the highest level of endocrine control?

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

    Which cells have receptors that bind hormones?

    <p>Specific cells</p> Signup and view all the answers

    What system links the hypothalamus and the anterior pituitary gland?

    <p>Hypophyseal Portal System</p> Signup and view all the answers

    Which gland contains a variety of endocrine cells?

    <p>Pituitary Gland</p> Signup and view all the answers

    What is the main difference between the nervous system and the endocrine system?

    <p>The nervous system produces short-term effects, while the endocrine system produces long-term effects.</p> Signup and view all the answers

    How do hormones travel within the body?

    <p>Directly into the interstitial fluids, lymph, or blood</p> Signup and view all the answers

    Which of the following is NOT a category of hormones?

    <p>Carbohydrate derivatives</p> Signup and view all the answers

    What is an example of a lipid derivative hormone?

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

    How do hormones influence cellular activity?

    <p>By changing the types, activities, or quantities of cytoplasmic enzymes</p> Signup and view all the answers

    Which of the following is NOT a characteristic of hormones mentioned in the text?

    <p>Hormones are transported through the nervous system to reach their target cells.</p> Signup and view all the answers

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