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How many of the following structures are...

How many of the following structures are found in the primary sex organ of a male ?
(I) The network of small tubules
(II) Leydig cells
(III) Blood vessels
(IV) Seminiferous tubules

A

1

B

2

C

3

D

4

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many of the listed structures are found in the primary sex organ of a male, we will analyze each option provided in the question. ### Step-by-Step Solution: 1. **Identify the Primary Sex Organ of a Male**: - The primary sex organ in males is the testes. This is where spermatogenesis occurs, and it contains various structures essential for sperm production. 2. **Evaluate Each Structure**: - **(I) The network of small tubules**: - The testes contain a network of small tubules, specifically the seminiferous tubules, where sperm is produced. Therefore, this structure is present. - **(II) Leydig cells**: - Leydig cells, also known as interstitial cells, are found in the testes and are responsible for producing testosterone. Thus, this structure is also present. - **(III) Blood vessels**: - Blood vessels are essential for supplying nutrients and oxygen to the testes and removing waste products. Therefore, blood vessels are present in the primary sex organ. - **(IV) Seminiferous tubules**: - Seminiferous tubules are the specific sites within the testes where spermatogenesis occurs. Hence, this structure is present as well. 3. **Count the Present Structures**: - All four structures (I, II, III, and IV) are found in the primary sex organ of a male (the testes). ### Conclusion: All four structures are present in the primary sex organ of a male. Therefore, the answer is **4**.
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