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Questions and Answers
Which of the following statements about calcium influx in ischemia is true?
Which of the following statements about calcium influx in ischemia is true?
- Calcium influx is not related to ATP-consuming enzyme activity
- Calcium influx is decreased in ischemia
- Calcium influx is not affected by hypoxia
- Calcium influx is increased due to hypoxia-induced membrane depolarization (correct)
What is the role of calcium channel blockers in protecting the tissue during ischemia?
What is the role of calcium channel blockers in protecting the tissue during ischemia?
- They promote the activity of ATP-consuming enzymes
- They increase the entrance of calcium into cardiac and smooth muscle cells
- They inhibit the entrance of calcium into cardiac and smooth muscle cells (correct)
- They deplete energy stores in the tissue
How does increased calcium influx worsen ischemia?
How does increased calcium influx worsen ischemia?
- By decreasing membrane depolarization
- By depleting energy stores in the tissue
- By inhibiting the entrance of calcium into cardiac and smooth muscle cells
- By promoting the activity of ATP-consuming enzymes (correct)
