Chapter 2: Cellular Response to Stress, Injury, and Aging Quiz

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Questions and Answers

Which hormone can increase blood glucose levels by inhibiting uptake of glucose by body cells?

  • Cortisol (correct)
  • Insulin
  • Glucagon
  • Epinephrine

In which tissues does cortisol have catabolic effects?

  • Skin and bone
  • Muscle, lymphoid tissue, and adipose tissue (correct)
  • Brain and heart
  • Liver and kidneys

What is the role of cortisol in protein metabolism?

  • It increases the rate of protein synthesis in liver (correct)
  • It enhances protein synthesis in muscle cells
  • It increases RNA production in muscle tissue
  • It inhibits protein synthesis in the liver

How does cortisol act as an immunosuppressant?

<p>By reducing eosinophil, lymphocytes, and macrophages (A)</p> Signup and view all the answers

Which gland is responsible for the release of cortisol in response to stress?

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

How can extreme physiologic stressors affect an individual?

<p>Increase risk for illness (D)</p> Signup and view all the answers

What is the outcome of cellular injury when a cell is unable to maintain homeostasis in the face of injurious stimuli?

<p>Cell may recover (reversible injury) (B)</p> Signup and view all the answers

Which of the following is NOT listed as an injurious stimuli that can lead to cellular injury?

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

What is the role of adaptation in cellular function?

<p>Adaptation helps cells protect themselves from injury (A)</p> Signup and view all the answers

What is the energy released when a mole of glucose is metabolically broken down in the presence of oxygen into carbon dioxide and water?

<p>$686$ kcal (C)</p> Signup and view all the answers

In early stages of a successful adaptive response, what might cells experience?

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

What do cells need to do in order to protect themselves from injury?

<p>Adapt to their environment (C)</p> Signup and view all the answers

Which term is defined as a demand that exceeds a person’s coping abilities, resulting in disturbances of cognition, emotion, and behavior?

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

What are the 3 stages of stress development in GAS, as defined by Hans Selye?

<p>Alarm, Stage of Resistance or Adaptation, Stage of Exhaustion (D)</p> Signup and view all the answers

During stress, which of the following is suppressed?

<p>Reproduction, growth, and thyroid hormone (D)</p> Signup and view all the answers

Which gland activates during stress due to ACTH and increases the secretion of glucocorticoid hormones?

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

What is one of the primary effects of cortisol during stress?

<p>Stimulation of gluconeogenesis (B)</p> Signup and view all the answers

Which hormone is known as hydrocortisone and is primarily secreted by the adrenal cortex during stress?

<p>Cortisol (E)</p> Signup and view all the answers

What is defined as the reversible replacement of one mature cell type by another (less mature) cell type?

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

Which adaptive change is characterized by an increase in cell number?

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

What is a common example of pathologic hyperplasia described in the text?

<p>Endometrial cells proliferation due to estrogen over-secretion (D)</p> Signup and view all the answers

Which of the following is a significant biochemical theme in understanding cell injury and cell death?

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

What is the most common cause of cellular injury according to the text?

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

Which organ enlarges in Takotsubo cardiomyopathy?

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

Within 1 minute after blood supply is interrupted, what happens to heart muscle according to the text?

<p>It becomes pale and has difficulty contracting (C)</p> Signup and view all the answers

What is the main symptom of Takotsubo cardiomyopathy?

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

What major change is observed in cellular aging related to mitochondria?

<p>Reduced oxidative phosphorylation (C)</p> Signup and view all the answers

What is the maximal life span range for humans according to the text?

<p>90-100 years (A)</p> Signup and view all the answers

After age 65, which gender typically outnumbers the other in terms of life expectancy?

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

Which area of study suggests changes produced by genetic, environmental, and behavioral factors in aging?

<p>Cellular changes produced by genetics only (B)</p> Signup and view all the answers

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