tunica albuginea
Quick Summary
The tunica albuginea is a fibrous sac that encloses each testis. This sac is lined internally by the tunica vasculosa, which contains a network of blood vessels, and is covered by the tunica vaginalis. The tunica albuginea extends into the testis, dividing it into approximately 250 lobules. Each lobule contains tubules where sperm are formed. The testes are the male gonads, producing sperm and androgens like testosterone. They are essential for male reproduction and the development of secondary sex characteristics.12
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
animal reproductive systemTestes…surrounded by a capsule, the tunica albuginea. Seminiferous tubules may constitute up to 90 percent of the testis. The tubule walls consist of a multilayered germinal epithelium containing spermatogenic cells and Sertoli cells, nutritive cells that have the heads of maturing sperm embedded in them. Seminiferous tubules may begin blindly…
Read More…surrounded by a capsule, the tunica albuginea. Seminiferous tubules may constitute up to 90 percent of the testis. The tubule walls consist of a multilayered germinal epithelium containing spermatogenic cells and Sertoli cells, nutritive cells that have the heads of maturing sperm embedded in them. Seminiferous tubules may begin blindly…
Read More
animal reproductive systemOvaries…layer of connective tissue, the tunica albuginea, which is much thinner than that surrounding the testes.
Read More…layer of connective tissue, the tunica albuginea, which is much thinner than that surrounding the testes.
Read More
