The embryo gets its nutrition from the yolk sac, which is an early source of nutrients and blood supply. This provides essential nutrients for the embryo's development before the placenta and umbilical cord are fully formed.
During the late stages of development, an embryo undergoes rapid growth and further organ formation. At this stage, the major organ systems are well formed, and the embryo is starting to resemble a human fetus. Specialization of tissues and organs continues as the embryo prepares for further growth and development.
Changes in the embryo are primarily driven by genetic factors, which determine the development of different tissues and organs. Environmental factors such as nutrition, toxins, and stress can also influence embryo development by affecting gene expression. Any disturbances in these factors can lead to abnormalities in embryonic development.
Yes it does.
Before placental development the conceptus gets nutrition from uterine secretions. After placentation nutrition comes from the mare via the placenta.
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The period during embryo development when the embryo is alive but not actively growing is called the embryonic diapause. This is a state of suspended animation that allows the embryo to delay development until environmental conditions are more favorable for survival.
Yes it does.
Yes it does.
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During development, an embryo is embedded in the the endometrium during the first week of pregnancy. The endometrium is the innermost muccous membrage of the uterus. The embryo becomes implanted in it, then the surrounding tissue forms sinuses that exchange nutrients and later becomes the placenta.
embryo