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  2. Fontanelle - Wikipedia

    en.wikipedia.org/wiki/Fontanelle

    Often the head will appear dome-shaped, and the open fontanelle is noticeable as a "soft spot" on the top of the dog's head. The fluid-filled spaces within the brain, known as ventricles, also become swollen. The increased pressure damages or prevents the development of brain tissue. [12] Not all open fontanelles are connected with hydrocephalus.

  3. Face and neck development of the human embryo - Wikipedia

    en.wikipedia.org/wiki/Face_and_neck_development...

    The face and neck development of the human embryo refers to the development of the structures from the third to eighth week that give rise to the future head and neck.They consist of three layers, the ectoderm, mesoderm and endoderm, which form the mesenchyme (derived form the lateral plate mesoderm and paraxial mesoderm), neural crest and neural placodes (from the ectoderm). [1]

  4. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    Human embryonic development or human embryogenesis is the development and formation of the human embryo.It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development.

  5. Cephalocaudal trend - Wikipedia

    en.wikipedia.org/wiki/Cephalocaudal_trend

    Finally, in adults, the head represents approximately 12% of the body length. The cephalocaudal trend is also the trend of infants learning to use their upper limbs before their lower limbs . The proximodistal trend, on the other hand, is the prenatal growth from 5 months to birth when the fetus grows from the inside of the body outwards.

  6. Cave of septum pellucidum - Wikipedia

    en.wikipedia.org/wiki/Cave_of_septum_pellucidum

    In prenatal development of the fetus, the laminae of the septum pellucidum separate to form a small cavity – the cave of septum pellucidum. This is an important normal structure to identify in the sonographic assessment of the fetal brain. In post-natal life, the laminae of the septum pellucidum usually fuse, which obliterates the cavum.

  7. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    Motor development. Can hold up head and chest while in prone position. [24] Movements of arms and legs become smoother. [25] Can hold head steady while in sitting position. [24] Certain infantile reflexes, such as the moro reflex and asymmetrical tonic neck reflex, begin to go away. [24] Able to open and close hands. [24] Communication skills

  8. Fetal head - Wikipedia

    en.wikipedia.org/wiki/Fetal_head

    The fetal head, from an obstetrical viewpoint, and in particular its size, is important because an essential feature of labor is the adaptation between the fetal head and the maternal bony pelvis. Only a comparatively small part of the head at term is represented by the face.

  9. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    The head comprises nearly half of the fetus' size. The face is well formed. The eyelids close and will not reopen until about the 27th week. Tooth buds, which will form the baby teeth, appear. The limbs are long and thin. The fetus can make a fist with its fingers. Genitals appear well differentiated. Red blood cells are produced in the liver.