[Development of the hemomicrocirculatory bed of the human gonads during the prenatal period of ontogeny]. 1984

I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov

The formation of the organospecific hemomicrocirculatory bed of the ovaries and testes has been studied by a complex of light, transmissive and scanning electron microscopy in 3--9-month-old human fetuses. The change of the diffusive protocapillary bed is secured by: 1) reduction of some protocapillaries; 2) appearance of secondary capillaries from the growth buds of the preceeding microvessels; 3) formation of arteriolar and venular links of the hemomicrocirculatory bed from the protocapillaries at the expense of differentiation of the developing paravasal connective tissue into cellular elements of the muscular and adventitial tunics. The secondary blood capillaries of the human gonads are predominantly formed intraendothelially. During the prenatal ontogenesis presence of the secondary blood capillaries of somatic uninterrupted type is specific for the human gonads.

UI MeSH Term Description Entries
D008297 Male Males
D008833 Microcirculation The circulation of the BLOOD through the MICROVASCULAR NETWORK. Microvascular Blood Flow,Microvascular Circulation,Blood Flow, Microvascular,Circulation, Microvascular,Flow, Microvascular Blood,Microvascular Blood Flows,Microvascular Circulations
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D008855 Microscopy, Electron, Scanning Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY. Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D010053 Ovary The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE. Ovaries
D004727 Endothelium A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body. Endotheliums
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013737 Testis The male gonad containing two functional parts: the SEMINIFEROUS TUBULES for the production and transport of male germ cells (SPERMATOGENESIS) and the interstitial compartment containing LEYDIG CELLS that produce ANDROGENS. Testicles,Testes,Testicle

Related Publications

I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
November 1983, Arkhiv anatomii, gistologii i embriologii,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
March 1997, Annals of the New York Academy of Sciences,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
January 1988, Arkhiv anatomii, gistologii i embriologii,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
January 1992, Ontogenez,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
January 1997, Morfologiia (Saint Petersburg, Russia),
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
March 1986, Arkhiv anatomii, gistologii i embriologii,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
November 1988, Arkhiv anatomii, gistologii i embriologii,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
May 1989, Arkhiv anatomii, gistologii i embriologii,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
October 1990, Vrachebnoe delo,
I I Bobrik, and E A Shevchenko, and A I Parakhin, and V G Cherkasov
September 1982, Arkhiv anatomii, gistologii i embriologii,
Copied contents to your clipboard!