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pregnancy - Coggle Diagram
pregnancy
fetal period
17-20 weeks( 5 month)
slow growth
vernix caseosa
quickening
21-25 weeks (6 month)
skin is wrinkled
weight gain
surfactant secretion (24 weeks)
13-16 weeks(4 month)
rapid growth and head is small
movement and kickening by ultra
recognize external genitalia
30-34 weeks
survive if born premature
9-12 weeks( 3 month)
head is big
body length increase
external genitalia is similar (9)
urine formation begins
35-38 weeks
CNS mature
circus of head and abdomen equal
weight 3.4 kg
testes descend into scrotum
26-29 weeks
lungs and BV and CNS well developed
chorion formation
extra embryonic mesoderm splanchnic surround yolk sac
extra embryonic mesoderm somatic surround amniotic cavity
colem will become chorion cavity
extra embryonic somatic mesoderem+ cytotrophoblst +synctiotrophoblast
cytotrophoblastic shell is (bushy chorion with decide basalis )
abnormalities of placenta
placenta accrete
adherence of the placenta to myomertium
placenta previa
the lying of placenta to the internal os
placenta abruption
the separation of the placenta from the endomertium before labour
placenta percreta
adherence of the placenta to the full thickness of myometrium
primary yolk sac
lined be exocelmic membrane and hypobalst
helps in nourishment of the embryo
allantosis
it come from the caudal end of the primary yolk sac
it form the umbilical vessles
it forms the blood 3-5 weeks
fetal alcohol syndrome
intellectual disability
epilepsy
learning difficulties
amniotic fluid
helps in development and growth
intestines by swallowing
lungs by practice breathing
protection
fluid cusion
prevent infection