Which is the outermost covering of testes?
Tunica albuginea
Tunica vaginalis
Tunica vasculosa
Both a & b
Externally the testes are covered by outer tunica vaginalis and inner tunica albuginea innermost tunica vasculosa.
tunica vaginalis, a closed sac of parietal peritoneal origin that contains a small amount of viscous fluid. This sac covers the anterior surface and sides of each testicle and works much like the peritoneal sac, lubricating the surfaces of the testes and allowing for friction-free movement.
tunica albuginea, a fibrous capsule that encloses the testes. It penetrates into the parenchyma of each testicle with diaphragms, dividing it into lobules.
Hence option B is correct .