Why is there a hard lump in the testicle?

I'm afraid that our male friends should be familiar with the word "testicles". Testicles are very important to our male friends. Some people have hard lumps in their testicles, which not only cause great pain physically, but also psychological trauma. This time we have brought you some relevant information.

Testicles are male internal reproductive organs. Normal men have two testicles, one on the left and one on the right side of the scrotum. Testicles are oval and grayish white. Adult testicles are 3.5-6 cm long, 2.3-4 cm wide, 2-2.8 cm thick, and each testicle weighs 16-67 grams. Generally, the left testicle is about 0.5 cm lower than the right testicle. Some people have one testicle that is larger than the other, or one that is higher than the other. If the difference is not too big, it is normal.

There are a large number of curved seminiferous tubules in the testicles, which contain interstitial cells. The seminiferous tubules are where sperms are produced. The number of sperms produced in a person's lifetime is astonishing. One ejaculation of 3-4 ml contains 300-400 million sperms, and as few as 100-200 million. The number of sperms produced in a lifetime can reach more than 1 trillion. The production of sperms is easily affected by many factors such as temperature. If the temperature around the testicles is too high or affected by chemical toxins, sperm production will be hindered.

Interstitial cells produce androgens, which are closely related to male secondary sexual characteristics and physiological functions.

2. Sperm production

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.

In adults, the diameter of each seminiferous tubule is 150-250 microns, and the length of each is 30-70 centimeters, with the longest reaching 150 centimeters. There are about 300-1000 seminiferous tubules in a testis, with a total length of 200-300 meters. Obviously, the base of sperm production in the testis is quite large. The seminiferous tubules in each testicular lobule merge into 2-3 straight seminiferous tubules to form the rete testis, which then merge into 15-20 testicular efferent ductules that communicate with the epididymis. Sperm enter the epididymis through this channel to mature. The seminiferous tubules are the base for sperm production. Why do such tiny tubes have such magical abilities? It is really hard to understand. There are quite complex subtle changes in cell biology and biochemistry. To this day, scientists are still painstakingly exploring its origin. Nonetheless, the basic process of sperm production is now familiar.

After the above understanding, do you feel that your impression of the testicles has deepened? In fact, our male friends should pay attention to this organ and take care of it, such as paying attention to personal hygiene and developing good personal habits, which are very important factors for the protection of the testicles.