The Endocrine System: Chapter 17 Quiz
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Questions and Answers

How does exercise affect leptin sensitivity?

  • It fluctuates leptin sensitivity
  • It decreases leptin sensitivity
  • It increases leptin sensitivity (correct)
  • It has no effect on leptin sensitivity

What is the role of osteocalcin?

  • Decreases sensitivity to glucose
  • Increases glucose excretion
  • Decreases insulin production
  • Increases insulin production and sensitivity to glucose (correct)

How does aging affect the production of human growth hormone, cortisol, and aldosterone?

  • They remain constant with age
  • They decline with age (correct)
  • They fluctuate with age
  • They increase with age

What effect does aging have on insulin resistance?

<p>It increases with age (D)</p> Signup and view all the answers

Which region of the adrenal gland produces mineralocorticoids like aldosterone?

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

What are the effects of epinephrine and norepinephrine produced by the adrenal medulla?

<p>Increase heart rate, blood pressure, and pulse; dilate airways; prompt vasodilation to essential organs (A)</p> Signup and view all the answers

What disorder is characterized by hypersecretion of cortisol, leading to high blood glucose and lipid deposits on the face and neck?

<p>Cushing's disease (A)</p> Signup and view all the answers

What is the main function of the pineal gland?

<p>Production of melatonin (D)</p> Signup and view all the answers

Which layer of the adrenal cortex primarily produces glucocorticoids like cortisol?

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

Which hormone is responsible for developing the male reproductive system, maturing sperm cells, and male secondary sex characteristics?

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

What is the primary mode of travel for hormones throughout the body?

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

Which type of signaling involves a chemical that elicits a response in the same cell?

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

What are the two types of hormones derived from modified amino acids?

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

What is the function of a hormone receptor?

<p>Binds to the hormone and initiates cellular mechanisms (C)</p> Signup and view all the answers

Which hormone is considered a first messenger?

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

Intracellular hormone receptors are specific for which type of hormones?

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

Which factor refers to cells decreasing receptors and becoming less reactive to excessive hormone levels?

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

"Chemical and neural stimuli can result in hormone secretion or inhibition" is an example of which method of hormone regulation?

<p>Feed back loops (B)</p> Signup and view all the answers

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