한국인 태아 뇌하수체에 관한 연구 제1편 형태통계학적 관찰

Abstract

The 634 Korean human foetuses (0 342, 우 292) were employed as the materials for the stastitical investigation of the pituitary, and the results were summarized as follows: 1) The three linear measurements (Transverse, anteroposterior and vertical diameter). a) The transverse diameter was the longest showing the largest growth ratio , while the vertical one the smallest. b) Especially after 8th month of foetal age, the growth of the vertical diameter became slow. c) The developments of all these three diameters showed the lineal progressive increasing with the advance of the foetal age. 2) Relation between the pituitary weights and the foetal age. The pituitary weight increases gradually"up to the 5th foetal month. After this period , it tended to show a sharp increase. 3) Relative weight of the hypophysis to the body weight. By the 4th foetal month , it indicated maximum, and at the 5th foetal month suddenly droped , from the 6 th to 7th month on appeared a tendency of gradual decline. 4) The size difference in the same foetal age was remarkable. 5) The sexual difference in every foetal period was negative. 6) The racial difference from the Japaneose was not found.