Heart disease

in drug-resistant forms! The rise of new or renewed infectious diseases, such as AIDS and measles, also indicates that we cannot yet conquer all killers. Although we can alter our environment more than other species can, some forces of nature remain beyond our control.

Why is it difficult to sort out the causes of aging? How is aging a passive process? How is aging an active process? Distinguish between life span and life expectancy.

Clinical Terms Related to Human Growth and Development abruptio placentae (ab-rup'she-o plah-cen'ta) Premature separation of the placenta from the uterine wall. amniocentesis (am"ne-o-sen-te'sis) Technique in which a sample of amniotic fluid is withdrawn from the amniotic cavity by inserting a hollow needle through the pregnant woman's abdominal wall. dizygotic twins (di"zi-got'ik twinz) Twins resulting from the fertilization of two ova by two sperm cells. hydatidiform mole (hi"dah-tid'i-form mol) Abnormal pregnancy resulting from a pathologic ovum; a mass of cysts.

hydramnios (hi-dram'ne-os) Excess amniotic fluid. intrauterine transfusion (in"trah-u'ter-in trans-

fu'zhun) Transfusion administered by injecting blood into the fetal peritoneal cavity before birth. lochia (lo'ke-ah) Vaginal discharge following childbirth. meconium (me-ko'ne-um) Anal discharge from the digestive tract of a full-term fetus or a newborn. monozygotic twins (mon"o-zi-got'ik twinz) Twins resulting from one sperm cell fertilizing one egg cell, which then splits.

perinatology (per'T-na-tol'o-je) Branch of medicine concerned with the fetus after twenty-five weeks of development and with the newborn for the first four weeks after birth. postpartum (post-par'tum) Occurring after birth. teratology (ter"ah-tol'o-je) Study of substances that cause abnormal development and congenital malformations. trimester (tri-mes'ter) Each third of the total period of pregnancy.

ultrasonography (ul'trah-son-og'rah-fe) Technique used to visualize the size and position of fetal structures from patterns of deflected ultrasonic waves.

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Your Heart and Nutrition

Your Heart and Nutrition

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