forrestlin
2008-03-06
dehydration(脱水):de means lack of; hydration refers to water.Dehydration means a lack of or loss of water from the body.
dialysis(透析): dia means complete or through; lysis means separation.Dialysis,then,means complete separation .It is the process of separating the chemicals and wastes from the blood,which would normally be accomplished by a functioning kidney.An artificial kidney machine is an example of a dialysis unit.
diameter(直径):meter means to measure;dia means through.Diameter,then,literally means to measure through.It is the distance from any point on the side of the circle to a point on the opposite side.
diarrhea(腹泻):rhea means flow or discharge.Diarrhea is the frequent flow of watery bowel movements through the intestines.
dyspnea(呼吸困难):dys is a prefix meaning bad,painful or difficult; pnea means breathing.A patient with dyspnea has difficulty breathing.
ectoderm(外胚层): ecto means outside;derm means skin.The ectoderm is the outside layer of cells in a developing embryol.
review yesterday's words,do you remember the meanings of them?
apnea
autogenous
bifurcation
bradycardia
congenital anomaly
contralateral

雪泥鸿爪
esophagus食管 rectum 直肠 anus 肛门
例句：the digestive tract consists of the mouth, throat, esophagus, stomach, small intestin, large intestin, rectum, and anus.
pancreas 胰腺 liver 肝脏 gallbladder 胆囊
例句：the digestive system also includes organs that lie outside the digestive tract :the pancreases, the liver, and the gallbladder.