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Its all about stages...

Its all about stages. Childhood Birth - 12years Conception Prenatal Infant Toddler Child Sperm Ovum Germinal Embryonic Foetal Newborns Babies Infants Toddler Preschooler. Terminology Got to know it. (understand it). Stages of Pregnancy. How long is a piece of string Germinal

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Its all about stages...

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  1. Its all about stages...

  2. Childhood Birth - 12years Conception Prenatal Infant Toddler Child Sperm Ovum Germinal Embryonic Foetal Newborns Babies Infants Toddler Preschooler

  3. Terminology Got to know it. (understand it)

  4. Stages of Pregnancy • How long is a piece of string • Germinal • Embryonic • Foetal

  5. Germinal Stage • Sperm 23 chromosomes • Ovum 23 chromosomes • Sperm+Ovum = 23+23= 46 = Zygot and contains full blue print for developing one single cell into a human being. • Zygot + 4days = 16-20 cells and is now a Morula • Morula+ 2days = (Differentiation individual cells begin to take on their specific roles (outer layer and inner cells) = Blastocyst • Blastocyst= days 6 to 8 baby and placental cells defined. Human chorionic gonadotropin produced. Stops the menstrual cycle. • Implantation = Embryo

  6. Embryonic stage implantation to end of week 8 • Differentiation of cells. • Outer cells (choroin) begin to develop into the placenta and the amniotic sack. • Inner cells grow in three layers. • Ectoderm becomes the neural tube which will form the brain backbone and spinal cord. • From the middle layer (mesoderm) muscles bones heart and circulatory system and sexual organs. • The third layer (endoderm) becomes the internal organs, lungs, liver, bowel, bladder and intestines.

  7. Embryonic stage • Day 17 thyroid gland begins and is the centre for control of metabolism • Day 18 we have a heart and a neural plate which will develop into the brain. • Day 21 lungs are developing and the brain has distinguishable areas and heart has chambers and beats, Kidneys and liver are developing. We have arm and leg buds. • Day 49 During this time the embryo undergoes a huge phase of cell differentiation and specialisation resulting in an almost tripling in size organs and skeleton are fully defined.

  8. Foetal Stage Week 9 till birth • All systems are go. • Muscles nerves and body organs. • Growth and development ++++ • Ready for birth • Last organs to be finished Lungs, Heart Brain last of all if ever.

  9. 12 WEEKS:5.5 cm long, is aware of sound, all organs working (except the lungs), can suck its thumb, will sneeze if something touches its nose 20 WEEKS:First movements felt by the woman, foetus can feel pain 28 WEEKS:Lungs mature enabling the foetus to breathe by itself once born , Opens eyes 32 WEEKS: Layers of fat form under the skin to keep the foetus warm in preparation for birth and life outside the womb.

  10. Love to categorise. • 1st Trimester 1-12 weeks 13 Grams 5 cm • Germinal Foundation • Embryonic • 2nd Trimester 13-27 weeks 1Kg • Foetal Refinement/Specialisation • 3rd Trimester 28-40 weeks 3.4Kg • Foetal GROWTH!

  11. Cephalocaudal Development • Head down to toes • Gradual gaining of control of the body. • Head . . . . . . . facial • Torso • Limbs • Extremities.

  12. Proximodistal development • Inside to out (Spinal column) • Torso • Limbs • Hands and feet • Toes

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