indifferent gonad

См. также в других словарях:

• Indifferent gonad — In embryonic life, the gonad in males and females is initially identical. This gonad is said to be indifferent before it differentiates into a definitive testis or ovary. An indifferent gonad becomes a testis if the embryo has a Y chromosome, but …   Medical dictionary

• Gonad — A reproductive gland (ovary or testis) that produces germ cells (gametes). In embryonic life, the gonad in males and females is initially identical. This gonad is said to be indifferent before it differentiates into a definitive testis or ovary.… …   Medical dictionary

• endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

• Development of the gonads — The prenatal development of the gonads is a part of the development of reproductive system and ultimately forms the testes in males and ovaries in females. They initially develop from the mesothelial layer of the peritoneum. The ovary is… …   Wikipedia

• Development of the urinary and reproductive organs — The development of the urinary and reproductive organs as a part of the prenatal development, concerns the urinary system and sex organs. The latter is a part of the stages of sexual differentiation. The urinary and reproductive organs are… …   Wikipedia

• antigen — Any substance that, as a result of coming in contact with appropriate cells, induces a state of sensitivity and/or immune responsiveness after a latent period (days to weeks) and that reacts in a demonstrable way with antibodies and/or immune… …   Medical dictionary

• Embryology — 1 morula, 2 blastula 1 blastula, 2 gastrula with blastopor …   Wikipedia

• Mesonephros — Reconstruction of a human embryo of 17 mm. (Label for Mesonephros is at center right.) Gray s …   Wikipedia

• Kidney development — Kidney development, or nephrogenesis, describes the embryologic origins of the kidney, a major organ in the urinary system. It is often considered in the broader context of the development of the urinary and reproductive organs. Contents 1 Phases …   Wikipedia

• Canal of Nuck — Latin processus vaginalis peritonei femininus Gray s subject #268 1261 The canal of Nuck, described by Anton Nuck in 1691,[1] …   Wikipedia

• Ureteric bud — Latin gemma ureterica; diverticulum metanephricum Carnegie stage 13 Days 35 Precursor …   Wikipedia