1. The Beginning of Human Life
... eye lids, a mouth and a broad nose. Also the ears are starting to develop on the sides of the head. Another change is the development of the limbs, which started in the fifth week. The limbs looked like little paddles on the sides of the body. Internally, the second prominent change is the complete development of the heart, which by the end of the second month will have four chambers just like an adult ... heart. The embryo now has a rhythmic heartbeat. The internal sex organs have ... work more than it should be to pump all the extra blood back to the heart. In the 9th month of pregn...
- Word Count: 1654
- Approx Pages: 7
- Grade Level: High School