gonad


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gonad

 [go´nad]
a gamete-producing gland; the ovary in the female or the testis in the male. Called also sex gland. adj., adj gonad´al, gonad´ial. The ovary produces the oocyte (ovum) and the testis produces the spermatozoon. In addition, the gonads secrete hormones that influence the development of the reproductive organs at puberty, and they control other physical traits that differentiate men from women (secondary sex characters), such as pitch of the voice and body form and size. The hormones produced by the ovary include estrogen and progesterone. The principal hormone produced by the testis is testosterone.

go·nad

(gō'nad),
An organ that produces sex cells; a testis or an ovary.
[Mod. L. fr. G. gonē, seed]

gonad

(gō′năd′)
n.
An organ in animals that produces gametes, especially a testis or ovary.

go·nad′al (gō-năd′l), go·nad′ic adj.

gonad

A sex organ: testis in males; ovary in females.

go·nad

(gō'nad)
An organ that produces sex cells; a testis or an ovary.
[Mod. L. fr. G. gonē, seed]

gonad

the OVARY or TESTIS of an organism.

go·nad

(gō'nad)
An organ that produces sex cells; a testis or an ovary.
[Mod. L. fr. G. gonē, seed]
References in periodicals archive ?
Human Chorionic Gonadotrophins (hCG) Stimulation Test: In an XY under-virilised male, if both the gonads are symmetrical (either palpable or impalpable), the most likely cause is hormonal but if the gonads are asymmetrical the most likely cause is chromosomal (dygenisis).
Maturation cycle and seasonal biochemical changes in the gonad. Ciencias Marinas, vol.
One-third of each gonad was preserved in 10% phosphate-buffered formalin for histology, and the rest was frozen at -40[degrees]C for lipid analysis.
monodon broodstock during gonad development with or without eyestalk ablation were investigated, and the effects of eyestalk ablation on the feeding, gonad development, and energy conversion of P.
Gonads in an early development subphase were found in larger females, which had a mean TL of 220.5 mm (SD 39.9), a mean BW of 362.3 g (SD 150.7), a mean GW of 19.1 g (SD 9.7), and a mean GSI of 4% (SD 0.7).
We have observed that cyp17a1, ar, dmrt1, and sox9 genes are involved in the gonad development of A.
Gonads, liver, kidney and gills are target organs for metals accumulation since they are metabolically actives accumulating metals sometimes in high levels [37].
Stage I: sexual rest, the gonad is loose; connective tissue is very abundant, with the appearance of fewer oogonianot exceeding 6 mm in diameter.
Palpable or non-palpable gonads, genital skin pigmentation, electrolytes, patient age at presentation, and family history are key clinical issues at initial evaluation.
The proximate composition of the gonad was 77.34 [+ or -] 0.54% moisture, 15.09 [+ or -] 0.57% protein, 6.74 [+ or -] 1.13% lipids, 0.06 [+ or -] 0.01% carbohydrates, and 1.68 [+ or -] 0.25% ash.