Endogenous vs Exogenous Growth Hormone Quiz
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Questions and Answers

What are the components of thyroid hormones that are part of the thyroglobulin complex?

  • T4 and T5
  • T3 and T4 (correct)
  • T1 and T2
  • T2 and T3

Where are the thyroid hormones T3 and T4 located within the thyroid gland?

  • Inside the colloid (correct)
  • In the bloodstream
  • In the parathyroid gland
  • In the thyroid follicular cells

Which of the following is NOT a component of the thyroglobulin complex?

  • Calcitonin (correct)
  • T4
  • Thyroglobulin
  • T3

What is the main function of the thyroglobulin complex containing T3 and T4?

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

Which hormone complex is still part of the thyroglobulin complex inside the colloid?

<p>(T3, T4) (C)</p> Signup and view all the answers

What is impaired in Laron dwarfs and African pygmies?

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

Which mutation is responsible for the impaired responsiveness to GH in Laron dwarfs and African pygmies?

<p>GH receptor mutation (B)</p> Signup and view all the answers

What is a key step for the promotion of growth by GH that is impaired in Laron dwarfs and African pygmies?

<p>IGF-1 formation ability (D)</p> Signup and view all the answers

What factor is normal or high in Laron dwarfs and African pygmies despite the impairment in responsiveness to GH?

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

In Laron dwarfs and African pygmies, what is the main cause of the inability to form IGF-1?

<p>Mutation in IGF-1 formation gene (B)</p> Signup and view all the answers

What hormone regulates the production of adrenal androgens, including DHEA?

<p>Adrenocorticotropic hormone (ACTH) (B)</p> Signup and view all the answers

Which of the following is not a function of ACTH?

<p>Controlling thyroid hormone levels (D)</p> Signup and view all the answers

What is the primary role of ACTH in the endocrine system?

<p>Regulating adrenal gland activity (C)</p> Signup and view all the answers

Which hormone is specifically mentioned to be influenced by ACTH in the text?

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

What is the main function of adrenal androgens regulated by ACTH?

<p>Influencing reproductive health (A)</p> Signup and view all the answers

What is the main reason some men tend towards exogenous GH?

<p>To increase exercise capacity (C)</p> Signup and view all the answers

How does the use of exogenous GH affect the endogenous GH?

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

Why is the effect of exogenous GH on endogenous GH considered an 'inhibition effect'?

<p>It suppresses endogenous GH (B)</p> Signup and view all the answers

What is the term used to describe substances and processes originating from outside an organism?

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

Why is it important to acknowledge the effects of exogenous GH before using it?

<p>To avoid suppression of endogenous GH (A)</p> Signup and view all the answers

What does the process described in the text enhance?

<p>Entry of fatty acids into adipose tissue cells (C)</p> Signup and view all the answers

Which of the following processes is NOT affected by the action mentioned in the text?

<p>Glucose absorption in the small intestine (A)</p> Signup and view all the answers

What is one key role of the process described in relation to adipose tissue cells?

<p>Enhancing fatty acid storage (D)</p> Signup and view all the answers

How does the described process impact blood circulation?

<p>Enhances fatty acid transport (B)</p> Signup and view all the answers

Which cellular process benefits the most from the enhanced entry of fatty acids according to the text?

<p>Lipid synthesis in adipose tissue cells (C)</p> Signup and view all the answers

What is one of the physiological functions of thyroid hormones mentioned in the text?

<p>Increase the transcription of numerous genes (A)</p> Signup and view all the answers

How do thyroid hormones impact gene expression based on the information provided?

<p>Enhance the transcription of numerous genes (D)</p> Signup and view all the answers

What is the effect of thyroid hormones on gene transcription?

<p>Elevate the transcription of numerous genes (A)</p> Signup and view all the answers

Which of the following accurately describes the impact of thyroid hormones according to the text?

<p>Increase transcription of multiple genes (C)</p> Signup and view all the answers

Based on the text, what is a notable effect of thyroid hormones on gene expression?

<p>Enhancing transcription of a wide range of genes (B)</p> Signup and view all the answers

What is a potential consequence of stress accompanied by tissue injury?

<p>Activation of stress-induced inflammation (D)</p> Signup and view all the answers

How does stress affect the production of inflammatory cytokines?

<p>Suppresses inflammatory cytokine production (B)</p> Signup and view all the answers

Which statement best describes the role of stress in inflammation?

<p>Stress amplifies the relationship between tissue injury and inflammation (C)</p> Signup and view all the answers

How does stress affect lymphocyte function in the context of antibody production?

<p>Stress causes lymphocyte dysfunction (A)</p> Signup and view all the answers

In the presence of stress and tissue injury, what is a likely outcome regarding immune responses?

<p>Immune responses are heightened (D)</p> Signup and view all the answers

How do the described actions collectively impact extracellular fluid calcium concentration?

<p>Promote bone resorption to release calcium (D)</p> Signup and view all the answers

What is the primary role of the actions described in the text?

<p>Maintaining calcium homeostasis (A)</p> Signup and view all the answers

Which of the following is a potential consequence of a malfunction in the regulation of extracellular fluid calcium concentration?

<p>Weakening of bone structures (A)</p> Signup and view all the answers

What organ system is most directly affected by the actions aimed at regulating extracellular fluid calcium concentration?

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

Why is maintaining extracellular fluid calcium concentration important for overall health?

<p>To support proper nerve function (B)</p> Signup and view all the answers

What type of adjustments are required for the regulation of calcium balance according to the text?

<p>Slowly responding adjustments (C)</p> Signup and view all the answers

Which of the following is a key characteristic of the adjustments needed to maintain a constant total amount of Ca in the body?

<p>Being long-lasting (C)</p> Signup and view all the answers

How would you describe the adjustments involved in regulating calcium balance?

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

What is the primary timing characteristic of the adjustments needed for maintaining a constant total amount of Ca in the body?

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

Which type of changes best describes the adjustments required for calcium balance regulation?

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

What is the primary effect of Growth Hormone (GH) on protein synthesis?

<p>Increases the rate of protein synthesis (B)</p> Signup and view all the answers

How does Growth Hormone (GH) affect glucose utilization in the body?

<p>Decreases the rate of glucose utilization (D)</p> Signup and view all the answers

What is the consequence of increased mobilization of fatty acids from adipose tissue due to GH?

<p>Increased use of fatty acids for energy (B)</p> Signup and view all the answers

Under GH control, what becomes the primary source of energy for the body?

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

How does GH influence the body's energy metabolism?

<p>Switches the source of energy to fats instead of glucose and proteins (C)</p> Signup and view all the answers

What effect does the accelerated rate of food utilization for energy have on the body?

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

How does the accelerated utilization of foods for energy impact ATP production within cells?

<p>Increases ATP production (D)</p> Signup and view all the answers

In what way does the accelerated utilization of foods for energy affect the body's temperature regulation?

<p>Enhances heat production (B)</p> Signup and view all the answers

How does the accelerated rate of food utilization impact the body's metabolic processes?

<p>Promotes catabolism over anabolism (C)</p> Signup and view all the answers

What is the likely consequence of a sustained acceleration in the rate of food utilization for energy on the body's overall nutritional status?

<p>Development of malnutrition (B)</p> Signup and view all the answers

How can the bones of the skull respond to growth according to the text?

<p>By growing in thickness and forming bony protrusions (D)</p> Signup and view all the answers

In what region of the skull can bony protrusions develop due to growth as described in the text?

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

What effect can growth have on the thickness of bones in the skull based on the text?

<p>Allowing for bony protrusions to form (A)</p> Signup and view all the answers

How do bony protrusions over the eyes typically arise according to the text?

<p>Due to growth and thickening of the bones (A)</p> Signup and view all the answers

What is a direct consequence of the bones of the skull growing in thickness as mentioned in the text?

<p>Creation of bony protrusions (C)</p> Signup and view all the answers

What is the primary consequence of an increase in TRH, TSH, T3, and T4 levels?

<p>Decrease in metabolic rate (C)</p> Signup and view all the answers

How do elevated levels of T3 and T4 impact ATP production?

<p>Increase ATP production (C)</p> Signup and view all the answers

Which of the following is a direct effect of increased TSH?

<p>Enhanced glucose breakdown (D)</p> Signup and view all the answers

What is the likely outcome of decreased TRH levels on heat production?

<p>Decrease in heat production (D)</p> Signup and view all the answers

How does an increase in TRH levels impact the metabolic rate?

<p>Increase in metabolic rate (C)</p> Signup and view all the answers

Which of the following conditions is NOT characterized by severe local inflammation, as mentioned in the text?

<p>Cushing's syndrome (C)</p> Signup and view all the answers

In which of the following disorders is cortisol NOT used for treatment according to the text?

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

What is the primary reason for using cortisol in treating allergic disorders, based on the text?

<p>To suppress the immune response (B)</p> Signup and view all the answers

Which of the following is a common misconception about cortisol's role in the immune system based on the text?

<p>It directly kills pathogens (C)</p> Signup and view all the answers

What distinguishes the harmful effects of diseases like rheumatoid arthritis from other aspects of the diseases, as mentioned in the text?

<p>Severe local inflammation (C)</p> Signup and view all the answers

What effect does an increase in potassium ions in the extracellular fluid have on aldosterone secretion?

<p>It greatly enhances aldosterone secretion (C)</p> Signup and view all the answers

How does a decrease in potassium ions in the extracellular fluid impact aldosterone secretion?

<p>It inhibits aldosterone secretion (D)</p> Signup and view all the answers

Which of the following ions, when increased in the extracellular fluid, does not impact aldosterone secretion?

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

What relationship does the concentration of potassium ions have with the regulation of aldosterone secretion?

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

If the extracellular fluid becomes deficient in potassium ions, what would be the expected effect on aldosterone secretion?

<p>Inhibits aldosterone secretion (D)</p> Signup and view all the answers

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