The stalked barnacle Pollicipes pollicipes (Gmelin, 1789), is a strictly littoral and essentially intertidal pedunculate cirripede that lives by forming dense aggregates or clumps on exposed rocky shores and cliffs associated with a high degree of hydrodynamism (Barnes 1996).
Since some women are unsure of the date of their last menstruation (perhaps due to period irregularities), a baby is considered full term if its birth falls between 37 to 42 weeks of its estimated due date. 1  The unborn baby spends around 37 weeks in the uterus (womb), but the average length of pregnancy, or gestation, is calculated as 40 weeks.
What Term Means Now. For years, babies were considered term (what we often call full-term) between 37 and 41 weeks of pregnancy. Most physicians believed that major organ development was complete by 37 weeks and that babies simply packed on pounds during the last stretch of pregnancy. The latest research, however, has proved them wrong.