human fetal development timeline

By kenleighmlopez

  • 1st MONTH

    • 2 weeks fertilzation
    • placenta forms and its purpose
    • developmet of ectderm, inesoderm, endoderm and what system they develop into.
    • development of brain, spinal cord, heart muscles, back bone, ribs and igestive track and lungs
  • Period: to

    1st TRIMESTER

    1st MONTH - 3rd MONTH

  • 2nd MONTH

    • development of face, arms, legs, fingers, toes, and major internal organs.
    • development of the senses

  • 3rd MONTH

    -sex can be determined

  • 4th MONTH

    • changes in size
    • development of lanugo and vernix

  • 2nd TRIMESTER

    4th MONTH - 6th MONTH

  • 5th MONTH

    • fetus can be delivered if nessessary

  • 6th MONTH

    • major reflexes start to form

  • 7th MONTH

    • fat begins to deposit of baby
    • hearing is fully developed
    • can move around
    • responds to stimuli

  • 3rd TRIMESTER

    7th MONTH - 9th MONTH

  • 8th MONTH

    • period of fat accumulation with rapid weight gain and growth

  • 9th MONTH

    • lungs fully developed
    • Bones begin to harden

  • Baby's Full Term

  • Baby's Due Date