And please support your answer
Thank you
2006-11-20 01:06:10 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The heart. I read about it in a book. I forget the title.
2006-11-20 01:10:54 · answer #1 · answered by littlechrismary 5 · 0⤊ 0⤋
At the end of the first four weeks the heart starts to develop. Fetal heart rate can be heard at 10 weeks. Between 26 to 28 weeks the fetus is developing its brain.
2006-11-20 11:45:04 · answer #2 · answered by yessenia 3 · 0⤊ 0⤋
the brain forms first. it is one of the first organs to form in the fetus. The spinal cord begins to develop at only a few days. its called the neural tube. then it seperates into 3 parts, then 5 parts, and those parts form the brain. the heart only starts beating at 5 weeks.
2006-11-20 16:58:55 · answer #3 · answered by Geminigrl 2 · 0⤊ 0⤋
The heart is apparent at day 22 after fertilization of the egg by the sperm. At week 6 the brain waves can be detected.
2006-11-20 09:15:41 · answer #4 · answered by QuiteNewHere 7 · 0⤊ 0⤋
Bioligically, the heart is needed first to pump blood and supply nourishment to the other developing organs (including the brain).
Now if you ask, "which came first, the chicken or the egg(?)", well, that can be a bit more difficult.
2006-11-20 09:23:42 · answer #5 · answered by we_are_legion99 5 · 0⤊ 0⤋
The heart
2006-11-20 09:08:21 · answer #6 · answered by Anonymous · 0⤊ 0⤋
i'm not a doctor nor a nurse but to tell you technically, first sensing from the doctor is the heart beat of the baby.
don't you know that heart beating of the child can be seen at mother's neck. try it and observed with a couple of a minute.
2006-11-20 09:21:14 · answer #7 · answered by vampire 1 · 0⤊ 0⤋