The structure and function of the testicles

Every person is born with many parts and structures, especially the difference between men and women, the structures they are made of are naturally very different. Today, I want to introduce to you the male part - testicles. Do you know what the structure of male testicles is? I believe that friends who have studied biology should have a general understanding, but do you still remember it? Or do you understand it completely?

The internal structure of the testis is wrapped by a layer of tough tissue on the outside, called the white membrane, which protects the testis. The white membrane thickens and extends inward, dividing the testis into many small chambers, which are called testicular septa and testicular lobules. Normal men generally have 200 to 300 lobules, which are filled with testicular parenchyma, where sperm is produced, called seminiferous tubules. If a small piece of testicular parenchyma is cut and placed under a microscope for observation, it can be seen that the seminiferous tubules are thin tubes.

The seminiferous tubules are also called seminiferous tubules. They are lined with spermatogenic epithelium and have a basement membrane on the outside. They are composed of two types of cells with different structures and functions. One type is spermatogenic cells at different stages of development, which gradually develop into sperm. The other type is supporting cells. Since spermatogenic cells are attached to them, they support and protect the spermatogenic cells. They also absorb nutrients (including oxygen) supplied to them from the body and supply them to spermatogenic cells, allowing them to develop into sperm. Hence, they are named supporting cells. The tissue between the seminiferous tubules is loose and is called the interstitium. It contains abundant blood vessels and lymphatic vessels. The interstitium is a necessary place for supplying nutrients from the human body to the seminiferous tubules. In addition, there is another type of cell that has the function of secreting male hormones, called interstitial cells. Although this type of cell is small, it has amazing functions. The androgens it secretes are distributed throughout the body, maintaining male sexual characteristics and male sexual function. At the same time, it has an important role in promoting spermatogenic cells to develop into sperm and promoting the body's synthesis and metabolism.

As mentioned above, the structure of male testicles is relatively complex and consists of many parts, among which the seminiferous tubules are a very important structure. They determine male fertility and protect spermatogenic cells, and play an important and irreplaceable role. Therefore, male friends must protect their reproductive organs well and better maintain their physical and mental health.