Human reproduction

1,736 views

Published on

0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,736
On SlideShare
0
From Embeds
0
Number of Embeds
23
Actions
Shares
0
Downloads
37
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

Human reproduction

  1. 1. REPRODUCTION Definition Primary sexual characteristics Secondary sexual characteristics Reproductive cells Next
  2. 2. Definition Human beings reproduce through sexual reproduction, bringing male and female sex together. Return
  3. 3. Primary sexual characteristics We already have them when we are born and they are different for male a female. Return
  4. 4. Secondary sexual characteristics This characters are the external characteristics which differentiate men from women an appear during puberty with some physical changes. Return
  5. 5. Reproductive cells Carry out the function of reproduction: •Sperm •Ovary Are the male reproductive cells Are the female reproductive cells Return
  6. 6. THE REPRODUCTIVE SYSTEM The female reproductive system The male reproductive system Fertilisation Next
  7. 7. The female reproductive system Is made up of these organs: Fallopian tubes uterus vulva Return ovary vagina
  8. 8. The male reproductive system Is made up of these organs: urethra penis vas deferens Return seminal vesicles prostate scrotum testicle
  9. 9. Fertilisation Occurs when an ovum and sperm join and they create a cell called zygote. Return It is implanted in the wall of the uterus and it become an embryo.
  10. 10. PREGNANCY AND BIRTH Pregnancy, protective structures Pregnancy, baby development Birth, labour Next
  11. 11. Pregnancy, protective structures During the pregnancy different structures are create to protect the embryo. Placenta: takes nutrients and oxygen. Umbilical cordon: connects the embryo to the placenta. Amniotic sac: protects the embryo. Return
  12. 12. Pregnancy, baby development • After 3 months: the embrion has all its organs. It becomes an foetus • After 5 months: the foetus starts moving • After 9 months: is ready to be born Return
  13. 13. Parts of the labour 1 2 3 Dilation: the contractions make the opening of the vagina and vulva big enough for the baby to come out. Expulsion: the baby is born. Afterbirth: the placenta comes out of the mother’s body. Return 1 2 3
  14. 14. • ALVARO M. • HELENA • ALEX • MARCOS FIN

×