American Board of Pathology (ABPath) 2025 – 400 Free Practice Questions to Pass the Exam

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What is the parietal layer of the tunica vaginalis?

Outer covering of the testicle

Inner lining of the scrotal wall

The parietal layer of the tunica vaginalis refers to the inner lining of the scrotal wall. This layer is a component of the tunica vaginalis, which consists of two layers: the parietal layer and the visceral layer. The parietal layer is attached to the inner surface of the scrotum and serves as the outer layer covering the testis, while the visceral layer adheres directly to the surface of the testis itself.

This structure plays an essential role in providing a protective environment for the testes, allowing for some mobility within the scrotum and facilitating normal function. The tunica vaginalis also helps in reducing friction between the testes and the scrotal wall, which is vital during movements. Understanding the anatomy and function of the tunica vaginalis is crucial in pathology, especially in conditions related to the male reproductive system.

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Layer surrounding the epididymis

Protective coat of the vas deferens

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