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Testicle

Testicle
Diagram of inner structures of a human testicle (the labelling "seminal vesicle lobules" is incorrect and should be "testicular lobules" instead)
Diagram of the external features and surrounding structures of the testicles of an adult male
Details
ArteryTesticular artery
VeinTesticular vein, pampiniform plexus
NerveSpermatic plexus
LymphLumbar lymph nodes
Identifiers
Latintestis
MeSHD013737
TA98A09.3.01.001
TA23576
FMA7210
Anatomical terminology
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 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. Testosterone release is controlled by the anterior pituitary luteinizing hormone, whereas sperm production is controlled both by the anterior pituitary follicle-stimulating hormone and gonadal testosterone.

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