Gas reaches colonic end in a newborn by?: (A) 2-3 hours, (B) 4-5 hours, (C) 6-7 hours, (D) 8-10 hours
Answer is D. 8-10 hours REF: Basic anatomical and physiological data for use in radiological protection by Jack Valentin, ICRP Page 128 Colonic transit time of different age group is Newborn 1 year 5-15 years Adults Male Female 8 hours 10 hours 11 hours 12 hours 16 hours