Buck reproductive organs include the testis, epididymis, vas deferens, urogenital tract, spermatic cord, accessory glands, penis, foreskin, and testicle sac. The stag testes are 2, cm long, 2 cm wide, 1 cm thick, and weigh about 2% g. They are long ellipses forming organs and are located within the scrotum. The testicle head is adjacent to the head of the epididymis, and the testicle tail is downward. The posterior edge and the epididymal body are called the epididymis margin. The leading edge is called the free edge. Testes produce sperm-secreting hormones. The male deer's epididymis is located in the scrotum and is adjacent to the testis epididymis and is divided into epididymis head, epididymal body and epididymal tail. The head of the epididymis is located on the upper part of the testicle and on the free edge of the testis in 3 parts, 1 cm wide. The sperm in the testis and epididymal heads have poor viability, poor ability to fertilize or poor fertility, and short survival time. The narrow body of the epididymis, 5 cm wide, extends along the testicular epididymis and is connected to the testis by the serosal ligament. The body of the epididymis is very long. Through the syneresis of the spermatozoa, the spermatozoa acquire a layer of protective protein outer membrane and mature. Epididymal tail width of 3 cm, epididymal tail down from the epididymal ligament and testicular tail connected to the epididymis ligament from the epididymis tail extends to the total sheath, the formation of the scrotum. Epididymidal tail spermatozoa have stronger motility and resistance, and the energy is much stronger than epididymal sperm. The epididymis is where sperm are stored, which is stored near the tail of the epididymis. The scrotum is located between the two strands, in front of the pubic bone, with the testis, epididymis and part of the spermatic cord. The outer layer of the scrotum is a thin skin, and the middle layer is a meat film formed of elastic fibers and smooth muscles. The meat film is divided into two halves that are indistinguishable from each other in the testis capsule. The total sheath is in the innermost layer of the scrotum, and the inherent membrane is wrapped on the surface of the testis, epididymis and part of the spermatic cord. The scrotum relaxes on hot days and shrinks on cold days. It is a temperature-regulating organ that maintains normal sperm production. The vas deferens from the epididymal duct. It is 1 cm long and 2 cm in diameter. It runs up the epididymis to the head of the epididymis, enters the abdominal cavity through the inguinal canal, turns into the pelvic cavity, and finally opens into the urethra. The urogenital tract is a direct continuation of the bladder neck in the back of the rectum, in the bone cavity in the ventral rectum, out of the pelvic cavity after the bow from the bone, before the sharp turn, in the penis ventral forward line, and finally open in the penis head, The tip protrudes from the penis as a urethral process. There are three pairs of accessory gonads, the seminal vesicle, the prostate, and the urethral gland. When they ejaculate, their secretions, together with the ampulla ampulla secretions, are called spermatozoids, which together with sperm form semen. The seminal vesicle secretes a milky white viscous liquid, which can provide the energy required for sperm metabolism, stimulate sperm movement, and has a buffering effect. The prostate is 3 cm long and 2 cm wide. It secretes thin, light white liquid and is weakly alkaline. It can regulate reproductive value and clear sperm. Metabolism produced by metabolism, inducing sperm; urethral gland is located in the dorsal side of the pelvic urogenital pelvis, spherical. The breeding season is as large as red beans, and the non-breeding season is as small as small grains. The cord is located in the testicle sac and the inguinal canal. The spermatic cord is 2 cm at its widest point, and the thickest part is -cm. There are arteries, veins, nerves and vas deferens. The penis is an organ with a dual role of mating and urination. It is a cylinder that is slightly flat on both sides, 5 cm, and 2 cm thick. The surface has an albuginea and the inside is mainly composed of fibrous tissue and a sponge. The foreskin is a fold of skin developed from the depression of the skin. It is 1/50 cm long. It starts at the posterior abdominal wall of the scrotum and extends forward along both sides of the penis. It ends at the head of the penis. When it is not erected, the head of the penis lies within the foreskin cavity. . China Agricultural Network Editor
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