Chapter 53 Key Terms

• p. 1188: zygote, fertilization, penetration, zona pellucida
  
• p. 1189: corona radiata, egg activation, gray crescent
  
• p. 1190: fusion, cleavage, morula, blastomere, blastula, blastocoel, holoblastic cleavage
  
• p. 1191: vegetal pole, animal pole, blastodisc, meroblastic cleavage
  
• p. 1192: inner cell mass, trophoblast, gastrulation, germ layers, ectoderm, mesoderm, endoderm
  
• p. 1193: in vitro fertilization, gastrula, archenteron, blastopore, dorsal lip
  
• p. 1194: yolk plug, primitive streak, notochord, neurulation
  
• p. 1195: neural groove, neural tube, somites, coelom
  
• p. 1196: neural crest, placodes
  
• p. 1198: biogenic law, ontogeny, phylogeny
  
• p. 1199: blastocyst, amnion, chorion
  
• p. 1200: implantation, chorionic frondosum, decidua basalis, placenta, human chorionic gonadotropin (HCG)
  
• p. 1201: organogenesis, thalidomide, rubella, morphogenesis, coccyx
  
• p. 1202: fetus
  
• p. 1203: lanugo
  
• p. 1204: fetal zone, afterbirth, lactation, milk-ejection reflex, colostrum
  
• p. 1205: allometric growth