| 영문 | plasma membrane | 한글 | 형질막 |
|---|---|---|---|
| 설명 | 원형질 표면을 덮는 엷은막. 두께는 5~25μm이다. 광학현미경으로는 관찰할 수 없지만 전자현미경으로 관찰이 가능하다. 원형질막의 분자구조는 레시틴이나 콜레스테롤 등의 표면 활성물질 분자가 2분자층으로 그 표면에 배열되며, 이것을 각 1분자층의 단백질 분자가 양쪽에서 샌드위치한 단위막 구조이다. 전자현미경적으로 이 단위는 암-명-암의 3층(각 약 20nm)으로 구별된다. 원형질의 투과성에 중요한 구실을 하며, 생리상태가 변하면 그 투과성도 신속히 변한다. 또, 손상이 되면 쉽게 새로 형성된다. |
||
| BCB | blood-cerebrospinal fluid barrier; brilliant cresyl blue |
|---|---|
| BIU | barrier isolation unit |
| BR | barrier reared [experimental animals]; baseline recovery; bathroom; bed rest; bedside rounds; biliru... |
| COBS | cesarean-obtained barrier-sustained; chronic organic brain syndrome |
| GMB | gastric mucosal barrier; granulomembranous body |
| placental calcium-binding protein | <protein> Calcium binding protein of placenta, uterus and vasculature containing the EF hand motif. (18 Nov 1997) |
|---|---|
| placental chorioangioma | <radiology> Most common benign tumour of placenta, incidence: 0.7%, Differential diagnosis: hydatidaform mole, large leiomyoma, chorioepithelioma, complications: IUGR, foetal anomaly, polyhydramnios, haemorrhage, heart failure, premature labour (12 Dec 1998) |
| placental circulation | The circulation of blood through the placenta during intrauterine life, serving the needs of the foetus for aeration, absorption, and excretion; also, maternal circulation through the intervillous space of the placenta. (05 Mar 2000) |
| placental dysfunction | 1. Denoting faulty development or ripening; often connoting structural and/or functional abnormalities. 2. In obstetrics, denoting an infant whose birth weight is inappropriately low for its gestational age. 3. Immature development of the placenta so that normal function does not occur. Synonym: placental dysfunction. (05 Mar 2000) |
| placental dysfunction syndrome | <syndrome> Foetal malnutrition and hypoxia resulting from impaired transfer of oxygen and various nutritive materials from mother to foetus. (05 Mar 2000) |
| placental dysmature | Immature development of the placenta so that normal function does not occur. (05 Mar 2000) |
| placental dystocia | Trouble delivering the placenta (the afterbirth). Dystocia comes from the greek dys meaning difficult, painful, disordered, abnormal + tokos meaning birth. (12 Dec 1998) |
| placental extracts | Extracts prepared from placental tissue; they may contain specific but uncharacterised factors or proteins with specific activities. (12 Dec 1998) |
| placental function tests | Methods used for the assessment of placental function. (12 Dec 1998) |
| placental growth hormone | human placental lactogen |
| placental hormones | Hormones produced by the placenta during pregnancy, including chorionic gonadotropin and substances having oestrogen, progestin, or adrenocorticoid activity. (12 Dec 1998) |
| placental insufficiency | Failure of the placenta to deliver an adequate supply of nutrients and oxygen to the foetus. (12 Dec 1998) |
| placental lactogen | <chemical> A polypeptide hormone secreted by the placenta that enters the maternal circulation and disappears from the circulation immediately after delivery. It has growth-promoting activity, is immunologically similar to human growth hormone, and inhibits maternal insulin activity during pregnancy. By inhibiting glucose oxidation it can increase the glucose supply to a foetus developing in a malnourished mother. Chemical name: Lactogen, placental (12 Dec 1998) |
| placental lobes | Cotyledons of the human placenta, viewed on the maternal surface as irregularly shaped elevations or lobe's. (05 Mar 2000) |
| placental parasitic twin | Underdeveloped twin of allantoidangiopagous twin; joined by umbilical vessels. Synonym: placental parasitic twin. Origin: omphalo-+ G. Sitos, food (05 Mar 2000) |