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science revision (pregnancy (the condition or period of being pregnant, 40…
science revision
pregnancy
the condition or period of being pregnant
40 weeks from the last menstrual period
pregnancy lasts around 40 weeks/9 months
3 stages of pregnancy and pregnancy only happens in females
cells
all plant and animal cells have a nucleus,cytoplasm and a cell membrane
red blood cell produces oxygen
white blood cells help fight infections
animal cells include:nucleus,cytoplasm,cell membrane
plant cells include:cytoplasm,cell membrane,cell wall,chloroplasts,vacuole,nucleus,mitochondria.
female reproductive system
it contains:ovaries,egg tube,uterus,vagina,cervix
cervix:the narrow neck like a passage
at the lower end of the uterus
ovaries:eggs are produced there
uterus:major female hormone,where pregnancy happens,lining of blood goes there then once a month a period happens.
puberty
physical sexual changes throughout girls and boys
girls puberty starts around the age of 8 to 16:
stages of puberty in girls:1 body growth,2 breast develope ,3 body hair, 4 body sweat,5 skin and hair changes,6 genitals develope ,7 discharge happens,8 first period
it happens in everyone but all at different times
solids,liquids,gases
solids are close together, arranged in a regular way
liquids close together and arranged in a random way