Implantation: Trophoblast cells bind to endometrium of uterine wall. Trophoblast's differentiate.
2 of 11
Trophoblast's differentiation
(1) Cyto-trophoblast: Line Embryo (2) Syncytio-trophoblast: Erodes uterine wall, secretes hCG = Release of Oestrogen and Progesterone from the corpus luteum until the placenta takes over.
3 of 11
Week 3
Gastrulation: Formation of brain, spinal cord and heart.
4 of 11
Germ Layers
(1) Ectoderm: Skin, NS, Eyes. (2) Mesoderm: Heart, CS, Muscles, Bones, Kidneys, RS. (3) Endoderm: Lungs, GI tract and Bladder
5 of 11
Week 4
Neurulation: Neural tube closes; Anterior first then posterior.
6 of 11
Week 6
All brain regions present. Beginning of hematopoiesis in the liver.
7 of 11
Week 8
All body systems in rudimentary forms. Beginning of Foetal period.
Myelination of spinal cord. Bone marrow is the only site of hematopoiesis.
11 of 11
Other cards in this set
Card 2
Front
Implantation: Trophoblast cells bind to endometrium of uterine wall. Trophoblast's differentiate.
Back
Week 2
Card 3
Front
(1) Cyto-trophoblast: Line Embryo (2) Syncytio-trophoblast: Erodes uterine wall, secretes hCG = Release of Oestrogen and Progesterone from the corpus luteum until the placenta takes over.
Back
Card 4
Front
Gastrulation: Formation of brain, spinal cord and heart.
Back
Card 5
Front
(1) Ectoderm: Skin, NS, Eyes. (2) Mesoderm: Heart, CS, Muscles, Bones, Kidneys, RS. (3) Endoderm: Lungs, GI tract and Bladder
Comments
No comments have yet been made