Fetal Development

rlnal week or embryomc berlod embryo looks dlstmolly numan compared to otner vertebrate embryos uDDer and lowel llmbs well formed‘ lmgers and tnen toes have seDarated Drlmordlal tlssues of all lmemal external structures now developed tall has become stubby actual lengtn placenta WEEK 16 Lengln 15 oerttlmelels (e 4 mcnes) Wetgnt 200 grams (7 ounces) WEEK 29 Length 27 5 oentlmeters (ll mones) Welgm l 300 grams (45 ounces) WEEK 38 (lull term)!» Length 50 bemlmetels (20 mones) Welgm a 400 grams (7 5 pounds) Durlng fetal Derlod‘ lenglh measurement extends lrom clown to heel (lo: embryos ltlsthe longest measurable dlmenslon‘ as horn clown to rumo)