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Reproductive & newborn nclex

Terms in this set (108)

PRE-EMBRYONIC PERIOD
First two weeks after conception
Embryonic period
Beginning day 15 through approximately week and after conception
Fetal period
Week nine after conception to birth
Week one
Blastocyst is free-floating
Weeks 2 to 3
Embryo is 1.5 to 2 mmin length, lung buds appear, blood circulation begins, heart is tubular and begins to beat, Nero plate becomes brain and spinal cord
Week five
Embryo is 0.42 0.5 cm in length, and is 0.4 g; double heart chambers are visible; heart is beating; limb buds form
Week eight
Embryo is 3 cm in length and weighs 2 g. Eyelids begin to fuse, circulatory system through umbilical cord is now established, every organ system is present
Week 12
Fetus is 6 to 9 cm in length. Weighs 19 g. Face is well formed. Limbs are long and slender. Kidneys begin to form urine. Spontaneous movements occur. Heartbeat is detected by Doppler transducer between 10 and 12 weeks. Gender is visually recognizable
Week 16
Fetus is 11.5 to 13.5 cm in length. Fetus is 100 g. Active movements are present. Fetal skin is transparent. Lanugo hair begins to develop. Skeletal ossification occurs
Week 20
Fetus is 16 to 18.5 cm in length. And is 300 g. Lanugo covers the entire body. Fetus has nails. Muscles are developed. Enamel and Dentin are depositing. Heartbeat is detected by regular fetoscope - nonelectronic
Week 24
Fetus is 23 cm in length and is 600 g. Hair on head is well formed, skin is Redish and wrinkled, reflex handcraft functions, vernix Caseosa covers entire body. Fetus has ability to hear
Week 28
Fetus is 27 cm long and 1100 g in weight. Limbs are well flexed. Brain is developing rapidly. Eyelids open and close. Lungs are developed sufficiently to provide gas exchange -lecithin forming. If born, neonate can breath at this time
Week 32
Fetus is 31 cm in length and 1802 2100 g. Phones are fully developed. Subcutaneous fat has collected. Lecithin to sphingomyelin ratio is 1.2:1
Week 36
Fetus is 35 cm in length and 2200 to 2900 g. Skin is pink and body is rounded. Skin is less wrinkled. Lanugo is disappearing. L/S ratio is greater than 2:1
Week 40
Fetus is 40 cm in length and is more than 3200 g. Skin is pink and smooth. Lanugo is present on upper arms and shoulders. Vernix Caseosa decreases. Fingernails extend beyond fingertips. Sole, planter, creases run down to heel. Testes are in the scrotum. Labia majora are well developed
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