INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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What is the lifespan of erythrocytes?

60 days
90 days
120 days
150 days

The correct answer is: 120 days

Erythrocytes, also known as red blood cells, have a lifespan of approximately 120 days. During this time, they are responsible for carrying oxygen from the lungs to various tissues and organs in the body. The incorrect options of 60 days, 90 days, and 150 days are too short or too long for the lifespan of erythrocytes. Shorter lifespans would result in a decreased ability to transport oxygen and longer lifespans would put a strain on the body's resources to continuously produce new red blood cells. Therefore, C is the most accurate and suitable option.