testis

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Related to male gonad: Gonadal hormones

tes·tis

 (tĕs′tĭs)
n. pl. tes·tes (-tēz)
1. One of the paired male reproductive organs that produce spermatozoa and male sex hormones in humans and other vertebrates.
2. An analogous gland in an invertebrate animal, such as a flatworm or a mollusk.

[Latin, witness, testis; see testify.]
Word History: The resemblance between testimony, testify, testis, and testicle shows an etymological relationship, but linguists are not agreed on precisely how English testis came to have its current meaning. The Latin testis originally meant "witness," and etymologically means "third (person) standing by": the te- part comes from an older tri-, a combining form of the word for "three," and -stis is a noun derived from the Indo-European root stā- meaning "stand." How this also came to refer to the body part(s) is disputed. An old theory has it that the Romans placed their right hands on their testicles and swore by them before giving testimony in court. Another theory says that the sense of testicle in Latin testis is due to a calque, or loan translation, from Greek. The Greek noun parastatēs means "defender (in law), supporter" (para- "by, alongside," as in paramilitary and -statēs from histanai, "to stand"). In the dual number, used in many languages for naturally occurring, contrasting, or complementary pairs such as hands, eyes, and ears, parastatēs had the technical medical sense "testicles," that is "two glands side by side." The Romans simply took this sense of parastatēs and added it to testis, the Latin word for legal supporter, witness.

testis

(ˈtɛstɪs)
n, pl -tes (-tiːz)
(Anatomy) another word for testicle
[C17: from Latin, literally: witness (to masculinity)]

tes•tis

(ˈtɛs tɪs)

n., pl. -tes (-tēz).
the male gonad, either of two oval reproductive glands located in the scrotum.
[1675–85; < Latin]

tes·tis

(tĕs′tĭs)
Plural testes (tĕs′tēz)
The reproductive organ of male animals, in which sperm and the sex hormones (androgens) are produced. Vertebrates have two testes, which in most animals are contained inside the body. In many mammals, they lie outside the body and are enclosed by the scrotum.

testis

(or testicle; pl. testes) One of a pair of primary male sex organs that manufacture male sex cells (sperm) .
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.testis - one of the two male reproductive glands that produce spermatozoa and secrete androgenstestis - one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
arteria testicularis, internal spermatic artery, testicular artery - a branch of the aorta supplying the testicles
testicular vein, vena testicularis - a vein from the testicles
male reproductive system - the reproductive system of males
seminiferous tubule - any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
gonad, sex gland - a gland in which gametes (sex cells) are produced
cobblers - a man's testicles (from Cockney rhyming slang: cobbler's awl rhymes with ball)
male reproductive gland - the reproductive organs of a man
undescended testicle, undescended testis - a testis that fails to move into the scrotum as the male fetus develops; "undescended testicles have an increased risk for cancer"
epididymis - a convoluted tubule in each testis; carries sperm to vas deferens
rete testis - network of tubules carrying sperm from the seminiferous tubules to the vasa efferentia
ductus deferens, vas deferens - a duct that carries spermatozoa from the epididymis to the ejaculatory duct
spermatic cord - a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves
Translations

testis

[ˈtestɪs] N (testes (pl)) [ˈtestiːz]testículo m, teste m

testis

[ˈtɛstɪs] n (testes (pl)) (frm) → testicolo
References in periodicals archive ?
Macroscopically, the ovotestis show typical coloration yellow with released white fluid, thus, resemble to male gonad. This ovotestis was in stage of post-spawning of sperm (Figure 1C, D) and their histological character did not differ from those of the gonochoric individuals (Figure 1A, B).
In this study, we investigated the expression of six genes that are known from literature to be steroid-related Leydig cell factors (cyp17a1, ar, and star), male gonad genes that are Sertoli cell factors (dmrt1 and sox9), and a female gene for ovarian differentiation (foxl2).
Although the exact course of development in this man was difficult to accurately determine, there has clearly been testosterone present to form his left male gonad and external genitalia.
In this research a large number of putative siRNAs and piRNAs were identified in male gonad of sea urchin and subjected to microarray assay to compare their expressional profile between normal and 0.1mM Zins treated gonad.
In June, July and August male gonad was almost identical to that observed in April (Fig.
During the summer breeding months, the male gonad was characterized by dense spermatocysts of all developmental stages (e.g., Figure 3D); while during the winter non-breeding months the mature male testis contained mainly spermatogonia, residual spermatozoa, and some primary spermatocytes (Figure 3E).
Studies of human karyotypes and corresponding sex traits provide the basis for the hypothesis that the Y chromosome contains putative genes that induce development of the male gonad. Advances in molecular genetics research lead to identification of such a gene; that is, the sex-determining region of the Y chromosome (SRY).
Furthermore, female gonad mass was significantly influenced by feeding treatment whereas male gonad mass was not; this indicates the expensive allocation cost of reproduction in females.
These patients have an XY genotype and a normal functioning male gonad. It is not necessary to remove the gonads.
The ratio of female and male gonad volume per polyp (gonad ratio) was also calculated for all species, as a relative measure of allocation of resources towards each sex.