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tigry1 [53]
3 years ago
9

Identify and describe the three periods of prenatal development. Briefly describe what occurs in each period.

Biology
1 answer:
____ [38]3 years ago
5 0

Explanation:

Development happens quickly during the prenatal period, which is the time between conception and birth. This period is generally divided into three stages: the germinal stage, the embryonic stage, and the fetal stage.  

First or the germinal stage- time span: conception at two weeks

development that occurs: the key steps in establishing a pregnancy

Second or the embryonic stage - time span: third through eighth week

development that occurs: the face, eyes, ears, limbs and bones begin to form

Third or the fetal stage- time span: eighth or ninth week through birth

development that occurs: the vocal cords develop, and the digestive system and kidneys begin to function. spontaneous or unplanned, movements are possible by the end of the third month

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