For nurse practitioners, the average number of years in practice decreased from 9.3 in 2012 to 8.9 in 2013, indicating an increasing number of new graduates entering the profession. For physician assistants, that number dropped from 12.37 years in 2012 to 11.97 in 2013, a 3.23% decrease.
â¢ GESTATION (noun). The noun GESTATION has 3 senses: 1. the period during which an embryo develops (about 266 days in humans). 2. the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus. 3. the conception and development of an idea or plan.
Prenatal or antenatal development is the process in which a human embryo or fetus (or foetus) gestates during pregnancy, from fertilization until birth. Often, the terms fetal development, foetal development, or embryology are used in a similar sense.y the end of the tenth week of gestational age the embryo has acquired its basic form and the next period is that of fetal development where the organs become fully developed. This fetal period is described both topically (by organ) and chronologically (by time) with major occurrences being listed by gestational age.