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"Pregnancy
(latin
graviditas) is the carrying of one or more offspring,
known as a
fetus or
embryo, inside the
uterus of a
female. In a pregnancy, there can be multiple
gestations, as in the case of
twins or
triplets.
Human pregnancy is the most studied of all
mammalian pregnancies.
Obstetrics is the surgical field that studies and treats
pregnancy.
Midwifery is the non-surgical field that cares for
pregnant women.
Childbirth usually occurs about 38
weeks after
fertilization (conception), i.e., approximately 40 weeks
from the the last normal menstrual period (LNMP) in
humans. The date of delivery is considered normal
medically if it falls within two weeks of the calculated
date. The calculation of this date involves the assumption
of a regular 28-day period. Thus, pregnancy lasts almost
nine months, although the exact definition of the English
word “pregnancy” is a subject of
controversy."
Source:
Wikipedia |
