PRENATAL CHANGES (BABY) First trimester
Month 1
Fertilized egg reaches the uterus and attache...
Biology, 29.05.2021 06:40, madmonee8378
PRENATAL CHANGES (BABY) First trimester
Month 1
Fertilized egg reaches the uterus and attaches itself to the uterus.
Cell multiplication begins
Internal organs and circulatory system begins to form
Cell division takes palace and at the end of 2 weeks the zygote is the size of a pin-head
Heart begins to beat
Small bumps show the beginnings of arms and legs
Month 2
A 5 weeks the embryo is about 1 1/8 inch long
All major organ systems develop The placenta and umbilical cord develop
Amniotic fluid surrounds the baby
Face and limbs take shape
Month 3
Baby is 2-1/2 to 3 inches long.
Weight is about 1/2 to 1 ounce.
Baby develops recognizable form.
Nails start to develop and earlobes are formed.
Arms, hands, fingers, legs, feet and toes are fully formed, Eyes are almost fully developed. Baby has developed most organs and tissues. Baby's heart rate can be heard at 10 weeks with a special instrument called a Doppler.
At 10 weeks the developing baby is considered to be fetus.
Answers: 2
Biology, 21.06.2019 23:00, makenziehook8
Rue or false siblings look simila rbecause they each have some traits of their parents.
Answers: 2
Biology, 21.06.2019 23:00, khanhlan7213
Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy
Answers: 3
Biology, 22.06.2019 00:20, vale4287
1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.
Answers: 1
Mathematics, 22.02.2021 14:00
History, 22.02.2021 14:00
English, 22.02.2021 14:00