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Human embryology is the study of this development during the first eight weeks after fertilization. The normal period of gestation (pregnancy) is about nine months or 36 weeks. The germinal stage refers to the time from fertilization through the development of the early embryo until implantation is completed in the uterus .
A fetus is a stage in the human development considered to begin nine weeks after fertilization. [4] [5] In biological terms, however, prenatal development is a continuum, with many defining features distinguishing an embryo from a fetus. A fetus is also characterized by the presence of all the major body organs, though they will not yet be ...
Human reproduction naturally takes place as internal fertilization by sexual intercourse. During this process, the man inserts his erect penis into the woman's vagina and then either partner initiates rhythmic pelvic thrusts until the man achieves orgasm , which leads to ejaculation of semen containing sperm into the vaginal canal.
SWAYAM PRABHA is an education learning platform initiated by the Ministry of Human Resource Development (MHRD) available through 40 (initially 32) DTH channels. [25] This initiative provides an educational program on television. As with the SWAYAM online portal, the content providers are NPTEL, IITs, UGC, NCERT etc. [26]
Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [ 1 ]
Development may also occur as a result of human nature and of human ability to learn from the environment. There are various definitions of the periods in a child's development, since each period is a continuum with individual differences regarding starting and ending.
WASHINGTON (Reuters) - Dreanda Cordero reentered the job market this year after a five-year break to raise three children, landing a data entry position she was not thrilled about that required on ...
From this increased creative ability, the ability to create new memes emerged and humans thus became universal constructors and technological development accelerated. Deutsch criticizes Jared Diamond 's resource luck theories as to why the West came to dominate the other continents outlined in his book Guns, Germs, and Steel .