Testicle

thumb|right|202px| Animation of the migration of spermatozoa from their origin as germ cells to their exit from the vas deferens. A) Blood vessels; B) Head of [[epididymis; C) Efferent ductules; D) Seminiferous tubules; E) Parietal lamina of tunica vaginalis; F) Visceral lamina of tunica vaginalis; G) Cavity of tunica vaginalis; H) Tunica albuginea; I) Lobule of testis; J) Tail of epididymis; K) Body of epididymis; L) Mediastinum testis; M) Vas deferens.]] A testicle, also called testis ( testes) is the male gonad in all gonochoric animals, including humans, and is homologous to the ovary, whi

In most terrestrial mammals, the scrotum (: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") 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. The scrotum will usually tighten when exposed to cold temperatures.

Cryptorchidism, also known as undescended testis (UDT), is the failure of one or both testicles to descend into the scrotum. The word is . It is the most common birth defect of the male genital tract. About 3% of full-term and 30% of premature infant boys are born with at least one undescended testis. However, about 80% of cryptorchid testes descend by the first year of life (the majority within three months), making the true incidence of cryptorchidism around 1% overall. Cryptorchidism may develop after infancy, sometimes as late as young adulthood, but that is exceptional. thumb|Different fo

cell type found in testis

engineered device or tissue that is implanted or integrated into a human to replace a natural organ

Form of sexual play

Location of meiosis and creation of spermatozoa in the testes

Orchiectomy (also named orchidectomy) is a surgical procedure in which one or both testicles are removed. The surgery can be performed for various reasons: treatment for testicular cancer as part of gender-affirming surgery for transgender women and non-binary people as management for advanced prostate cancer to remove damaged testes after testicular torsion. after a trauma or complex rupture of the tunica albuginea. as a treatment for post-vasectomy pain syndrome.

type of offal

branch of the abdominal aorta that supplies blood to the testis

thumb|300px|A schematic of an orchidometer An orchidometer (or orchiometer) is a medical instrument used to measure the volume of the testicles.

physical barrier between the blood vessels and the seminiferous tubules of the animal testes

Orchiopexy (or orchidopexy) is a surgery to move and/or permanently fix a testicle into the scrotum. While orchiopexy typically describes the operation to surgically correct an undescended testicle, it is also used to resolve testicular torsion.

Polyorchidism is the incidence of more than two testicles. It is a very rare congenital disorder, with fewer than 200 cases reported in medical literature and six cases (two horses, two dogs and two cats) in veterinary literature.

Artificial testicle replacement