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Pages in category "Human life stages" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. A. Āśrama (stage) D.
Human embryonic development refers to the development and formation of the human embryo. It is characterised by the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one-celled zygote to an adult human being.
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 .
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...
This model of the biological life cycle of a human shows the basic processes involved and the order that they are in. Sinhala මනුෂ්යයාගෙ ජිවන චක්රය සහ එහි ප්රධාන ක්රියාවලිය පිලිවෙලට
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
The biological and physical aspects of sexuality largely concern the human reproductive functions, including the human sexual response cycle. [ 332 ] [ 333 ] Sexuality also affects and is affected by cultural, political, legal, philosophical, moral , ethical , and religious aspects of life.
Cole called the series an "Allegory of Human Life" and wrote detailed descriptions of the paintings, conveying how each depicts a different stage of the man's life and spiritual development. [5] The voyager has also been seen as a personification of America, and the series as a warning against westward expansion and industrialization. [6]