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human embryogenesis, fertilization and fetus development
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Human Embryogenesis, Fertilization And Fetus Development

Development
• Week 9 to 16
The fetal stage commences at the beginning of the 9th week. At the start of the fetal stage, the fetus is typically about 30 millimetres (1.2 in) in length from crown to rump, and weighs about 8 grams. The head makes up nearly half of the fetus' size. Breathing-like movement of the fetus is necessary for stimulation of lung development, rather than for obtaining oxygen. The heart, hands, feet, brain and other organs are present, but are only at the beginning of development and have minimal operation.

File information
Filename:417117.jpg
Album name:People & Humanity
Rating (1 votes):55555
Keywords:#human #embryogenesis #fertilization #fetus #development
Filesize:42 KiB
Date added:Sep 22, 2011
Dimensions:700 x 700 pixels
Displayed:120 times
URL:displayimage.php?pid=417117
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