单词	placental
释义	placentapla‧cen‧ta /pləˈsentə/ noun [countable] Word Origin WORD ORIGINplacenta Origin: 1600-1700 Latin ‘flat cake’, from Greek, from plax ‘flat surface’ Examples EXAMPLES FROM THE CORPUS After the second month of pregnancy, estriol levels steadily increase as the placenta takes over estrogen production. 344. If there's any chance it is placenta praevia, it could detach and cause a haemorrhage. In the case of estriol, the placenta utilizes a dehydroepiandrosterone precursor made in the adrenal glands of the fetus. It causes many complications, including small placenta size, stillbirth and low birthweight. Second, the story is a reminder that caffeine, like alcohol, freely crosses the placenta. The birth is recorded in an odd shot of the nurse gleefully holding aloft the bloody placenta. The latter looks like a placenta and has the same consistency, too. These chemicals were getting through the placenta and reaching foetuses in the womb and the eggs of birds and fish. word sets WORD SETS► Human AB, nounabdomen, nounaccommodation, nounAchilles tendon, nounAdam's apple, nounadaptation, nounadenoids, nounadrenalin, nounairway, nounambidextrous, adjectiveanatomical, adjectiveankle, nounantibody, nounantigen, nounanus, nounanvil, nounaorta, nounappendix, nounarch, nounarmpit, nounarterial, adjectiveartery, nounatrium, nounbaby tooth, nounback, nounbackbone, nounbandy, adjectivebarrel-chested, adjectivebeat, verbbelly, nounbelly button, nounbicep, nounbig toe, nounbikini line, nounbile, nounbiological clock, nounbiorhythms, nounbiped, nounbladder, nounblind spot, nounblink, verbblink, nounblood count, nounblood group, nounblood pressure, nounbloodstream, nounblood type, nounblood vessel, nounBO, nounbody clock, nounbody odour, nounbone, nounbone marrow, nounbowel, nounbow legs, nounbrain, nounbrainwave, nounbreast, nounbreastbone, nounbristly, adjectivebronchial, adjectivebronchial tube, nounbrow, nounbuck teeth, nounbullnecked, adjectiveburp, verbbust, nounbuttock, nouncanine, nouncapillary, nouncardiac, adjectivecardio-, prefixcardiovascular, adjectivecarotid artery, nouncartilage, nouncentral nervous system, nouncerebellum, nouncerebral, adjectivecervical, adjectivecervix, nounchamber, nounchange of life, nouncheek, nouncheekbone, nounchest, nounchin, nouncirculation, nounclavicle, nouncleavage, nounclitoris, nounclose-set, adjectivecoccyx, nouncochlea, nouncock, nouncollarbone, nouncolon, nouncolour, nouncolour-blind, adjectiveconception, nouncone, nounconnective tissue, nouncoordination, nouncornea, nouncortex, nouncough, verbcough, nouncowlick, nouncranium, nouncrook, verbcrotch, nouncrow's feet, nouncrutch, nouncry, verbcuticle, noundandruff, noundeep-set, adjectivedefecate, verbdefence mechanism, noundental, adjectivedentine, nounderrière, noundiaphragm, noundigit, noundigital, adjectivedimple, noundisc, noundominant, adjectivedouble-jointed, adjectivedribble, verbdrool, verbduct, nounduodenum, nounear, nouneardrum, nounearhole, nounegg, nounejaculate, verbelbow, nounenamel, nounendocrine, adjectiveentrails, nounepidermis, nounepiglottis, nounerect, adjectiveerection, nounerogenous zone, nounexcrement, nounexcreta, nounexcrete, verbexcretion, nounexpectorate, verbextremity, nouneye, nouneyebrow, nouneyelash, nouneyelid, nouneyesight, nouneye tooth, nounface, nounfallopian tube, nounfart, verbfart, nounfemur, nounfibre, nounfibula, nounfigure, nounfingernail, nounfingertip, nounfist, nounfive o'clock shadow, nounflat-chested, adjectivefoetal position, nounfolic acid, nounfollicle, nounforearm, nounforefinger, nounforehead, nounforeskin, nounframe, nounfunny bone, noungall bladder, noungallstone, noungastric, adjectivegenital, adjectivegenitals, noungland, nounglottis, noungonad, noungrey matter, noungroin, nounG-spot, noungullet, noungum, nounhair, nounhairless, adjectivehairy, adjectivehammer, nounhamstring, nounhand, nounhand-eye co-ordination, nounhandlebar moustache, nounhead, nounheart, nounheel, nounhiccup, nounhiccup, verbhip, nounHomo sapiens, nounhumerus, nounhymen, nounimmune, adjectiveimmune system, nounimmunity, nouninbred, adjectiveincisor, nounindex finger, nouninherit, verbinstep, nounintestine, nounin vitro fertilization, nouniris, nounIVF, nounjaw, nounjawbone, nounjowl, nounkidney, nounknee, nounknee cap, nounknuckle, nounlap, nounlarge intestine, nounlarynx, nounlash, nounlaugh lines, nounlaughter lines, nounleft-handed, adjectivelefty, nounlens, nounlid, nounlifeblood, nounligament, nounlip, nounlittle finger, nounliver, nounlobe, nounlong-sighted, adjectivelumbar, adjectivelung, nounlymph, nounlymph node, nounmammary, adjectivemammary gland, nounmanual, adjectivemarrow, nounmasticate, verbmatrix, nounmelanin, nounmelatonin, nounmember, nounmenopause, nounmenses, nounmenstrual, adjectivemenstrual period, nounmenstruate, verbmiddle ear, nounmiddle finger, nounmidget, nounmidriff, nounmilk tooth, nounmind, nounmolar, nounmucous membrane, nounmuscle, nounnail, nounnape, nounnasal, adjectivenavel, nounnervous, adjectiveneurology, nounneuron, nounniacin, nounnipple, nounnode, nounnodule, nounnostril, nounocular, adjectiveoesophagus, nounoral, adjectiveovary, nounoverbite, nounoviduct, nounpalate, nounpalm, nounpalpitate, verbpalpitations, nounpancreas, nounpassage, nounpatella, nounpectorals, nounpelvic, adjectivepelvis, nounpenetrate, verbpepsin, nounperiod, nounperiod pain, nounperspiration, nounperspire, verbphallus, nounpharynx, nounphlegm, nounphysical, adjectivephysiognomy, nounphysiology, nounphysique, nounpigeon-toed, adjectivepit, nounpituitary, nounplacenta, nounplasma, nounplatelet, nounpore, nounpotbelly, nounpremenstrual, adjectiveprepubescent, adjectivepressure point, nounprimal, adjectiveprivate parts, nounprognathous, adjectiveprostate, nounpuberty, nounpubescent, adjectivepubic, adjectivepudendum, nounpulmonary, adjectivepulp, nounpulse, nounpupil, nounquad, nounquadruplet, nounquin, nounquintuplet, nounradius, nounreceptor, nounrecessive, adjectiverectal, adjectiverectum, nounred blood cell, nounREM sleep, nounrenal, adjectiveretina, nounRhesus factor, nounRH factor, nounrib, nounrib cage, nounright, adjectiveright-handed, adjectiveright-hander, nounrigor mortis, nounring finger, nounrod, nounRoman nose, nounround-shouldered, adjectiverun, verbsalivary gland, nounsallow, adjectivescalp, nounscaly, adjectivescapula, nounsciatic, adjectivescrotum, nounsemen, nounseminal, adjectivesense, nounsense organ, nounsensory, adjectivesextuplet, nounshank, nounshin, nounshinbone, nounshoulder, nounshoulder blade, nounside, nounsinew, nounsinus, nounskeletal, adjectiveskull, nounsleep, verbsleep, nounsmall intestine, nounsneeze, verbsneeze, nounsnub nose, nounsnub-nosed, adjectivesoft palate, nounsolar plexus, nounsole, nounsphincter, nounspinal, adjectivespinal column, nounspine, nounspit, verbspit, nounspittle, nounspleen, nounspotty, adjectivesputum, nounsternum, nounsteroid, nounstirrup, nounstomach, nounstool, nounstubble, nounsubcutaneous, adjectivesuck, verbsuckle, verbsuckling, nounsweat gland, nounsystem, nountailbone, nountan, verbtan, nountanned, adjectivetarsus, nountartar, nountaste bud, nountear, nounteardrop, nounteat, nountemple, nountendon, nountestes, nountesticle, nountestis, nountestosterone, nounthickset, adjectivethigh, nounthorax, nounthroat, nounthumb, nounthumbnail, nounthyroid, nountibia, nounticklish, adjectivetoe, nountoenail, nountongue, nountonsil, nountooth, nountorso, nountouch, nountrachea, nountriceps, nountrunk, nountympanum, nounulna, nounumbilical cord, nounurethra, nounuterus, nounuvula, nounvagina, nounvascular, adjectivevein, nounvenous, adjectiveventricle, nounvessel, nounvestibule, nounvital, adjectivevocal cords, nounvoice box, nounvulva, nounwaist, nounwall-eyed, adjectivewax, nounwhite, nounwhite blood cell, nounwindpipe, nounwisdom tooth, nounwomb, nounwrinkle, verbwrist, nounyawn, verbyawn, noun an organ that forms inside a woman’s uterus to feed an unborn baby—placental adjective [only before noun]:  placental blood
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