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human reproduction - Coggle Diagram
human reproduction
The male reproductive system
vasa deferentis and prostate
The sperms cells leave the testicles the testicles trough two tubes called the vasa deferentia
penis
The penis is a tubular organ that contains the urethra
testicles
The testicles produce millions of sperm cells every day
puberty in boys
Boys often go through pubery later then girls between 11 and 16 years of age
The male reproductive organs
Some of the male reproductive organs are external
Pregnancy and birth
From zygote to embrio
After fertilisation ocurrs the zygote travels to the uterus
From embryo to foetus
At nine weeks, all of the embryo`s organs have formed and it becomes a foetus
Fertilisation
Fertilisation occurs when a sperm cell joins with an ovum
Labour and birth
Pregnancy usually lasts about 280 days which is 40 weeks.
The female reproductive system
The female reproductive organs
Most of the female reproductive organs are internal. these organs are located inside the lower abdomen
puberty in girls
Most girls experience puberty between 10 and 16 years
Sexual characteristics
The physical differences between men and women are called sexual charactheristics
The menstrual cycle
The menstrual cycle usually starts in girls when they are between 10 and 15