Which one of the following tissues of the eye relies almost solely on anaerobic metabolism instead of the TCA/electron transport cycle?
Question
Which one of the following tissues of the eye relies almost solely on anaerobic metabolism instead of the TCA/electron transport cycle?
Solution
The tissue of the eye that relies almost solely on anaerobic metabolism instead of the TCA/electron transport cycle is the Cornea. The cornea is avascular (does not contain blood vessels) to maintain its transparency, so it does not receive oxygen and nutrients from blood. Instead, it obtains oxygen directly from the air and nutrients from the tear fluid on its outer surface and the aqueous humor on its inner surface. Therefore, it primarily relies on anaerobic metabolism for energy.
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