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Question

What is the height and weight of twelve weeks old human embryo?

A
7.5 cm, 650 grams
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B
7.5 cm, 14 grams
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C
42 cm, 1800 grams
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D
32 cm, 650 grams
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Solution

The correct option is A 7.5 cm, 650 grams
The fetal period is the week 9 to 36 after conceiving. During this period, organs and tissues are differentiated. This period is about the growth of embryo both in size and weight. At 12 weeks, the size of the embryo is as big as fig. The height of human embryo is about 4.4 cm to 5.4 cm in length and weight is 14 grams. At this stage, the fetal heartbeat is audible by Doppler ultrasound. The sex can be determined at this stage by ultrasound techniques.
Thus, the correct answer is option B.

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