Thyroid Hormone Overview
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Questions and Answers

What is the primary function of calcitonin?

  • Increase blood calcium levels
  • Enhance calcium resorption from bone
  • Stimulate intestinal absorption of calcium
  • Decrease blood calcium levels (correct)
  • Which hormone is released in response to increased stress levels?

  • Estrogen
  • Calcitonin
  • Cortisol (correct)
  • Insulin
  • Which hormone is produced by the alpha cells of the pancreas?

  • Insulin
  • Aldosterone
  • Cortisol
  • Glucagon (correct)
  • Which hormone from the adrenal cortex regulates water and electrolyte balance?

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

    What is the primary effect of parathyroid hormone?

    <p>Increase calcium levels in the blood</p> Signup and view all the answers

    What is the function of insulin secreted by the pancreas?

    <p>Facilitates glucose absorption into cells</p> Signup and view all the answers

    What role do catecholamines from the adrenal medulla play in the body?

    <p>Prepare the body for short-term stress</p> Signup and view all the answers

    How does parathyroid hormone affect bone cells?

    <p>Stimulates osteoclasts to remove calcium from bone</p> Signup and view all the answers

    Which hormone produced by the adrenal cortex helps resist long-term stressors?

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

    Which hormone helps regulate calcium absorption in both the kidneys and intestines?

    <p>Parathyroid hormone</p> Signup and view all the answers

    Which hormone secreted by the thymus is involved in the development of the immune system?

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

    Where is estrogen primarily produced in females?

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

    What happens to hormone production as people age?

    <p>Growth hormone production declines</p> Signup and view all the answers

    What is the primary function of calcitonin in the body?

    <p>Lowering blood calcium levels by inhibiting osteoclast activity</p> Signup and view all the answers

    During a stress response, which hormone is primarily secreted by the adrenal cortex?

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

    What role does insulin play within the pancreatic islets?

    <p>Facilitates the uptake of glucose by cells</p> Signup and view all the answers

    What is the primary effect of parathyroid hormone (PTH)?

    <p>Increases blood calcium levels</p> Signup and view all the answers

    Which hormone produced by the adrenal cortex is involved in sodium retention and potassium excretion?

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

    What is the primary trigger for the release of insulin from the pancreas?

    <p>Increased blood sugar levels</p> Signup and view all the answers

    Which hormone helps to raise blood calcium levels during periods of low calcium availability?

    <p>Parathyroid hormone (PTH)</p> Signup and view all the answers

    What physiological changes are influenced by cortisol during stress?

    <p>Increased glucose production and suppression of inflammation</p> Signup and view all the answers

    Which of the following best describes the role of aldosterone?

    <p>Increases blood pressure by promoting sodium retention</p> Signup and view all the answers

    Which of the following hormones is produced by the adrenal medulla?

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

    How does the negative feedback mechanism regulate hormone levels in the blood?

    <p>By inhibiting further hormone release when target levels are reached</p> Signup and view all the answers

    Which glands are primarily stimulated by hormonal stimuli?

    <p>Endocrine glands</p> Signup and view all the answers

    What is the function of oxytocin in the human body?

    <p>Stimulates uterine contractions during labor</p> Signup and view all the answers

    Study Notes

    Thyroid Hormone

    • The thyroid gland secretes triiodothyronine (T3) and thyroxine (T4)
    • T3 is made from T4 in target tissue
    • T4 is secreted by thyroid follicles
    • Thyroid hormone affects metabolism
    • Thyroid hormone is a major metabolic hormone

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    Description

    This quiz dives into the essential functions and roles of thyroid hormones, specifically triiodothyronine (T3) and thyroxine (T4). You'll learn about their synthesis, secretion, and significant impact on metabolism. Test your knowledge on how thyroid hormones control metabolic processes in the body.

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