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Question

In a male, the total number of seminiferous tubules in both testicles are 1500. The most likely combination of testicular lobules and seminiferous tubules per lobule will be:

A
Testicular lobules-250, seminiferous tubules per lobule-3
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B
Testicular lobules-350, seminiferous tubules per lobule-5
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C
Testicular lobules-200, seminiferous tubules per lobule-4
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D
Testicular lobules-220, seminiferous tubules per lobule-3
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Solution

The correct option is A Testicular lobules-250, seminiferous tubules per lobule-3
Usually, each testis has about 200 - 250 lobules which contain around 1 - 3 highly coiled seminiferous tubules.
According to the question, the total number of seminiferous tubules in both the testicles are 1500. It means there are 750 seminiferous tubules per testis. (Assuming number of lobules and seminiferous tubules per lobule are equal in both the testicles)
If number of testicular lobules in one testis = 250
and number of seminiferous tubules in one lobule = 3
Then the number of seminiferous tubules in one testis = 250 𝝬 3 = 750 which matches the number required.

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