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A testicle or testis (pl.: testes) is the male gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testicles are to produce both sperm and androgens, primarily testosterone.
The embryonic and prenatal development of the male reproductive system is the process whereby the reproductive organs grow, mature and are established. It begins with a single fertilized egg and culminates 38 weeks later with the birth of a male child. It is a part of the stages of sexual differentiation.
In most terrestrial mammals, the scrotum (pl.: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") [ 1 ][ 2 ] or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin containing the external spermatic fascia, testicles, epididymides, and vasa deferentia.
Testicular cancer. 7.4 × 5.5-cm seminoma in a radical orchiectomy specimen. Testicular cancer is cancer that develops in the testicles, a part of the male reproductive system. [2] Symptoms may include a lump in the testicle or swelling or pain in the scrotum. [2] Treatment may result in infertility.
The mediastinum testis appears as the hyperechoic region located at the periphery of the testis as seen in this figure. [citation needed] Scrotal (or transscrotal) ultrasound is a medical ultrasound examination of the scrotum. It is used in the evaluation of testicular pain, and can help identify solid masses. [1]
Testicular torsion occurs when the spermatic cord (from which the testicle is suspended) twists, cutting off the blood supply to the testicle. [3] The most common symptom in children is sudden, severe testicular pain. [1] The testicle may be higher than usual in the scrotum and vomiting may occur. [1][2] In newborns, pain is often absent and ...
Testicular pain, also known as scrotal pain, occurs when part or all of either one or both testicles hurt. Pain in the scrotum is also often included. Testicular pain may be of sudden onset or of long duration. [1][2] Causes range from non serious muscular skeletal problems to emergency conditions such as Fournier gangrene and testicular torsion.
Epididymis. The right testicle, exposed by laying open the tunica vaginalis. The epididymis (/ ɛpɪˈdɪdɪmɪs /; pl.: epididymides / ɛpɪdɪˈdɪmədiːz / or / ɛpɪˈdɪdəmɪdiːz /) is an elongated tubular genital organ attached to the posterior side of each one of the two male reproductive glands, the testicles.