1. Pediatrics is the medicalspecialty that studieschildren and their diseases.The term comes fromGreek paidos (child) andiatrea (healing), but itscontent is much higherthan the cure of diseases ofchildren, since pediatricstudiesboth healthychildren and the sick.

2. Chronologically, pediatrics covers frombirth through adolescence. Within it aredistinguished several periods: neonatal(first four weeks), infant (1-12 monthsold), preschool (1-6 years), school (6-12years) and adolescent (12-18 years). 3. Thereareseveralspecialties in pediatrics,including pediatricdentistry. The hebiatra,for example, is thebranch specialized indiseases of adolescentmental disorders indifferentsocialandhealth can affect puberty. 4. EMBRYONIC PERIODThe embryonic period extendsfrom the third to the eighth weekof development. It is the stage at which each of the three germ leaves (ectoderm, mesoderm and endoderm) gives rise to its own tissues and organ systems. 5. The germination sheet gives rise toectodermal organs and structures thatmaintain contact with the outside world: Central and peripheralnervous system. Sensory Skin, hair epithelium of and nails. the ear, noseand eye. 6. The sheet gives rise to mesodermal germinativevarious tissues and systems such as:Muscle tissue.Cartilage and bone.Subcutaneous tissue.Vascular system.Urogenital system. 7. Germinativa leaf endodermalepithelial lining provides:Gastrointestinal tract. UrinaryRespiratory bladder. system. 8. Extends from the ninthFETAL PERIOweek until the birth DIn the fetal period all preformed organs begin a rapidgrowth 9. Week ninthHematopoiesis (blood cellformation) inthe liver 10. Week tenthIntestines return tothe abdomen 11. Week twelfthHematopoiesis(blood cellformation) in thespleen 12. Week eighteenthVermis cheesy(sebaceous substancein the fetus skin)Early signs of fetallife 13. Week twentiethHair on the headLanugo (fine hairin all the body) 14. Week Twenty-fourthNeumocito IIsecrets :surfactante(respiratorysystem) 15. Week Twenty- eigthFetus open theeyes 16. Week Thirty-eighthTestes in the scrotumIs the end of thepregnancy 17. common infection in children, occur throughout the year, with peakshigher incidence during lecture times, given the ease oftransmission that has.It is caused by a virus called Varicella-Zoster Virus, and leavelifelong immunity in most cases, meaning that the disease does notrepeat itself. 18. common in children during the first two years of age Moisturelinked to HeatWhich is favored by the presence of urine and feces. 19. Meningitis is an inflammation of the meninges(membranes covering the brain and spinal cord)due to an infection.FeverSevereheadacheVomiti Foodngrefusal OcularVomiting Symptoms indiscomfortyoungSymptoms children in olderchildrenDrowsine Irritabil ss ity SomnolenciaIrritability 20. Meningitis is caused by a bacteria that spreads tothe childs brain through the blood.The child can acquire the disease after having hadan infection in another part of the body:Such as earNose ThroatYou can also purchase it after suffering a headinjury.