Fertilized Egg = 受精卵, 即剛受精唔耐 至 細胞開始分裂但細胞未轉化成各器官. Embryo = 胚胎, 即未足三個月, 各器官未成形既狀態 Foetus = 胎兒, 即三個月後, 各器官大致成形既狀態.
不是所有antibodies 都可進入胎盤, 只有IgG一類能夠進入, 因為胎盤中有為Antibodies IgG 特製的 receptor(授體), 叫做 Neonatal Fc receptor, 能識別該antibody, 然後胎盤會以phagocytosis/pinocytosis (吞噬作用/細胞吞飲...
The head is the only inflexible bit of the baby. The rest of the body is flexible to squeeze through the narrow birth channel. The best position is head come out first and facing the mother's tail bone. If the back of the head facing the tail-bone...
...implantation provides a place called placenta for the zygote to grow into foetus . (iii)One implantation occurs, the level of progesterone and oestrogen...
1a)-exchange of substance between foetus and mother take place in placenta -increase the rate of diffusion -attach the foetus ...
...test the growth of the internal organs digits and limbs of the foetus . As the above mentioned, their sex can also be known...
...圖片參考：http://www.flatseats.com/images/sleep-types.gif Foetus Those who curl up in the foetus position are described...
... will only be found if amnotic fluid is passing through the foetus ' gastrointestinal system. Since during this process, some cells will...
...the zygote will have 47 chromosomes, which is abnormal. So, the foetus develop will suffer from Down Syndrome. However, if the...
... ,miscarriage(流產) occurs 3)Why is it important for the foetus to come out of the mother with the head first during birth? Ans : to prevent...
