Growth Pattern of the Tympanic Ring in Human Fetuses

Abstract Background and Objectives: Ultrasonography is the most effective way to date pregnancy and to estimate the fetal weight in obstetric clinics. Currently, the diaphyseal length of humerus is used as a new parameter to estimate gestational age. The study evaluates the diaphyseal length of humerus as a parameter to estimate the gestational age of the fetus at the time of examination and to assess the growth pattern of humerus with advancing gestational age. Methods: The study was done on 152 antenatal women aged between 20 to 30 years of gestational ages from 15 to 40 weeks from the district of Dharwad, Karnataka, Subjects with maternal disease known to affect normal fetal growth wete excluded. The diaphyseal length of humerus was measured by radiologist in a standardized manner. The study describes the relationship of the diaphyseal length of humerus in centimeters, with the advancing gestational age in weeks. Results: It was observed that the diaphyseal length of humerus gradually increased from 15 weeks to 40 weeks of gestation and that the relationship is linear and direct. Normograms of diaphyseal lengths of humerus can be constructed by the formula derived by this study for this particular geographical area. Conclusion: The relationship between the diaphyseal length of humerus and the gestational age is linear and direct. The measurement of the diaphyseal lengths of humerus [in cm] can be an important additional parametet for estimating gestational age along with other parameters.

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The epidermal growth pattern in human fetuses

Indian Journal of Paediatric Dermatology ◽

10.4103/ijpd.ijpd_42_19 ◽

2020 ◽

Vol 21 (4) ◽

pp. 287

Author(s):

Adil Asghar ◽

Shivani Dhingra ◽

JayantKumar Verma

Keyword(s):

Growth Pattern ◽

Human Fetuses ◽

Epidermal Growth

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Investigations on the Growth Pattern of the Maxillary Sinus in Japanese Human Fetuses

Okajimas Folia Anatomica Japonica ◽

10.2535/ofaj1936.71.5_311 ◽

1994 ◽

Vol 71 (5) ◽

pp. 311-318 ◽

Cited By ~ 10

Author(s):

Thomas KOPPE ◽

Toshio YAMAMOTO ◽

Osamu TANAKA ◽

Hiroshi NAGAI

Keyword(s):

Maxillary Sinus ◽

Growth Pattern ◽

Human Fetuses

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Scanning Microscopy of Human Intestinal Explants in Organ Culture

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100095248 ◽

1972 ◽

Vol 30 ◽

pp. 396-397

Author(s):

Bruce Wetzel ◽

Robert Buscho ◽

Raphael Dolin

Keyword(s):

Electron Microscopy ◽

Room Temperature ◽

Culture Conditions ◽

Human Fetuses ◽

Enteric Disease ◽

Organ Cultures ◽

Growth Of A Variety ◽

Normal Human ◽

Fetal Intestine ◽

Scanning Electron

It has been reported that explants of human fetal intestine can be maintained in culture for up to 21 days in a viable condition and that these organ cultures support the growth of a variety of known viral agents responsible for enteric disease. Scanning electron microscopy (SEM) has been undertaken on several series of these explants to determine their appearance under routine culture conditions.Fresh specimens of jejunum obtained from normal human fetuses were washed, dissected into l-4mm pieces, and cultured in modified Leibowitz L-15 medium at 34° C as previously described. Serial specimens were fixed each day in 3% glutaraldehyde for 90 minutes at room temperature, rinsed, dehydrated, and dried by the CO2 critical point method in a Denton DCP-1 device. Specimens were attached to aluminum stubs with 3M transfer tape No. 465, and one sample on each stub was carefully rolled along the adhesive such that villi were broken off to expose their interiors.

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