Human growth and development By zeron Period: Dec 28, 1997 to Jan 1, 1998 zygote form the start of me becoming a zyote to growing into an embryo Period: Jan 1, 1998 to Feb 28, 1998 Embryo stage from the start of an Embryo to the end of an Embryo Jan 28, 1998 Heart beats regularly. Eyes and ears begin to form. Feb 28, 1998 Heart develops right and left chambers. Period: Feb 28, 1998 to Aug 28, 1998 Fetus Mar 28, 1998 Infant begins to crawl. May 28, 1998 Bones are visible. Heartbeat can be heard with a stethoscope. Jun 28, 1998 Fingerprints form. Jul 28, 1998 Eyelids can open and weight can be up to 6.6 pounds. Period: Aug 28, 1998 to Aug 28, 2000 Infancy Nov 28, 1998 A baby can hold its head up and reach for objects. Period: Aug 28, 2000 to Aug 28, 2011 Childhood Aug 25, 2002 I start school Nov 15, 2003 My sister birth Mar 18, 2005 I learn to ride a bike Aug 28, 2007 Ovulation in females, and sperm production in males begin. Period: Aug 28, 2007 to Aug 28, 2013 Puberty Dec 25, 2009 My first pet Jul 26, 2010 Start middle school Period: Aug 28, 2011 to Aug 28, 2018 Adolescence Period: Aug 28, 2018 to Aug 28, 2078 Adulthood Aug 28, 2030 Aging begins. Aug 28, 2048 Aging becomes more noticeable and progresses rapidly. Aug 28, 2080 Skin starts to become wrinkled.
