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Photos of what pregnancy tissue from early abortions at 5 to 9 weeks actually looks like have gone viral.. The images, which were originally shared by MYA Network — a network of physicians who ...
English: Stages in Prenatal development, with weeks and months numbered by gestation. Image made in Inkscape. References are found in equivalent Wikipedia articles: Fetus; Gestational age; Human development (biology) Pregnancy; Prenatal development; Viability (fetal)
The fetus starts producing leukocytes at 2 months gestational age, mainly from the thymus and the spleen. Lymphocytes derived from the thymus are called T lymphocytes (T cells), whereas those derived from bone marrow are called B lymphocytes (B cells). Both of these populations of lymphocytes have short-lived and long-lived groups.
Infant feeding is the practice of feeding infants. Breast milk provides the best nutrition when compared to infant formula . Infants are usually introduced to solid foods at around four to six months of age.
An estimated 24% of babies worldwide are born with lower than optimal weights at birth due to lack of proper nutrition. [3] Personal habits such as consumption of alcohol or large amounts of caffeine can negatively and irreversibly affect the development of the baby, which happens in the early stages of pregnancy. [4]
In the second trimester and third trimester (late embryonic and fetal stages), the fetus undergoes rapid weight growth and the weight increases to about 3000~4000 grams. [ citation needed ] It is also in this period that the mother experiences the bulk of her gestational weight gain but the amount of weight gain varies greatly.
At the beginning of the ninth week, the embryo is termed a fetus (spelled "foetus" in British English). In comparison to the embryo, the fetus has more recognizable external features and a more complete set of developing organs. Human embryology is the study of this development during the first eight weeks after fertilization.
The fetus reaches a length of about 40–48 cm (16–19 in). The fetus weighs about 2.5 to 3 kg (6 lb 10 oz)to 6 lb 12 oz). Lanugo begins to disappear. Body fat increases. Fingernails reach the end of the fingertips. A baby born at 36 weeks has a high chance of survival, but may require medical interventions. Fetus at 38 weeks after fertilization.