Tuesday, 27 September 2011
Saturday, 17 September 2011
2.4
Animal cell uncludes:
• Nucleus
• cytoplasm
• cell membrane
- stores CH as glycogen
Plant cell include:
• nucleus
• cytoplasm
• cell membrane
• central vacuole
• chloroplast
• cell wall
- more regularly shaped
- stores CH as starch
3.12
• During pregnancy the uterus is filled with a fluid called the amniotic fluid, which is mostly made out of water
• It protects the developing embryo
• The fluid prevents damage to the unborn child by absorbing forced pressure
3.11
• The uterus and the placenta come together for the exchanging of nutrients that the baby needs to develop
• The uterus is filled with amniotic fluid when the baby is inside the uterus
• the child cannot digest food and cannot breath, as well as not being able to excrete.
• The placenta does not grow out of the mother but from the embryo.
• The blood vessels inside the placenta belong to the baby.
• The placenta grows into the wall of the uterus.
• At the placenta all the nutrients cross over into the babies blood stream
• to make this effective the placenta has a large SA
• There is a very thin barrier between the babies and the mothers blood
3.9 b
Female reproductive system
• before pregnancy the uterus is quite small, no bigger than an orange
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