spermatozoid


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to spermatozoid: spermatozoon

spermatozoid

(spər-măt′ə-zō′ĭd, spûr′mə-tə-)
n.
1. A flagellated male gamete produced by an antheridium, found in certain algae, seedless plants, and gymnosperms. Also called antherozoid.
2. A spermatozoon.

spermatozoid

see ANTHEROZOID.
Mentioned in ?
References in periodicals archive ?
It is important to emphasize that the complex fecundation processes are directly controlled by hormone concentration in the female's reproductive tract influencing spermatozoid capacitation that occurs at a specific moment depending on the species.
Testosterone secreted by leyding cells is hecessary to develop and divided germinal cells which are the first phase of forming spermatozoid [7].
For male acini, germinal cells sat within the inner wall of the acinus, with spermatocysts, spermatids, and spermatozoids developing toward the lumen.
The results of the study revealed no significant negative effect of Kan Jang on male semen quality and fertility, but rather a positive trend with respect to the number of spermatozoids in the whole ejaculate, the percentage of active (normokinetic) forms of spermatozoids, and fertility indexes, together with a decrease in the percentage of inactive (diskinetic) forms of spermatozoids.
In size and development, spermatozoids of Ginkgo and most cycads
The last item lead us to suggest that in spite of the higher proportion in spermatophore weight and spermatozoid count of feral males, the higher percentage of normal spermatozoids in farmed shrimps compensates such inequalities, making farmed males a more reliable source of spermatozoids for female fertilization given their availability and consistency.
Structural proof of the spermatozoid releasing and attracting pheromone of Laminariales.
Moreover, one fourth of the infertile patients presents a normal seminal analysis, demonstrating that, probably in these cases of normozoospermia, the alterations occur only in the function of the spermatozoid.
Among nonfeeding developers, Abatus cordatus, with a 15-[[micro]meter]-long spermatozoid head and an egg 1300 [[micro]meter] in diameter, has the longest echinoid sperm after Phyllacanthus parvispinus (20 [[micro]meter]; Raff et al.
Measured under a light microscope, the spermatozoid head exhibited a length of approximately 5 [micro]m, whereas the tail was approximately 50 [micro]m long.