Cov placenta yog qhov sib cuam tshuam ntawm niam thiab tus menyuam hauv plab. Kev ua haujlwm ntawm cov placenta suav nrog kev sib pauv roj, hloov pauv hauv metabolic, hormonal secretion, thiab tiv thaiv fetal. Khoom noj khoom haus thiab tshuaj hloov mus rau hauv cov placenta yog los ntawm passive diffusion, yooj yim diffusion, nquag thauj, thiab pinocytosis
Cov khoom thauj ntawm cov placenta mus rau fetus li cas?
Protein thaujrau fetus li amino acids los ntawm cov amino acid transporter proteins tshwj xeeb. Placental lipid thauj mus rau fetus cuam tshuam nrog kev thauj mus los ncaj qha ntawm qee cov fatty acids nrog rau lipid uptake los ntawm lipoproteins, metabolic alteration nyob rau hauv lub placenta, thiab tso rau hauv lub fetus plasma.
Puas cov khoom pov tseg hla dhau ntawm cov placenta?
Cov khoom pov tseg thiab cov pa roj carbon dioxide los ntawm tus menyuam raug xa rov qab los ntawm cov hlab ntsha ntawm cov hlab ntsha thiab cov placenta mus rau leej niam txoj kev ncig tshem tawm.
Vim li cas qee yam tshuaj tuaj yeem hla tus placenta?
Tshuaj uas muaj qhov hnyav molecular, lipid (fat) solubility, nonpolarity, thiab tsis muaj protein khi cov khoom yuav sai thiab yooj yim hla cov placenta. Cawv, piv txwv li, nkag mus rau hauv lub embryo nyob rau hauv siab concentrations.
Cov kab mob hla cov placenta li cas?
Cov kab mob kis tau mus txog qhov chaw mos dhau ntawm niam cov ntshav lossis los ntawm kev nce ntawm qhov chaw mos.
