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Maternity I
Unit XI
| Question | Answer |
|---|---|
| The fetal heart pumps blood in how many weeks? | 2 weeks |
| Somites form to develop vertebral column in how many weeks? | 4 weeks |
| Large muscle groups contract; All body systems formed; Fingers, toes, and ears formed; Internal sex organs differentiated. | 8 weeks |
| Fetal heart tones heard with doppler. | 8-12 weeks |
| Eyes closed | 10 weeks |
| Kidneys produce urine. | 12 weeks |
| Fetal sex is externally visible; Looks like a baby, but thin; Skeleton ossification is evident. | 16 weeks |
| Feta heart tones heard with a fetoscope; Mother feels movement (Quickening); Vernix (lanolin-like substance)forms; Lanuto (fine hair) appears; Fetus sleeps, sucks, and grasps. | 20 weeks |
| Respiratory movements begin; Increasing movement. | 24 weeks |
| Respiratory-circulatory system shave developed sufficiently; Lungs are immature, but can provide gas exchange. | 24-28 weeks |
| Eyes open and close; Surfactant needed for breathing at birth is formed; Testes descend; Nervous system begins respiratory function; Baby two-thirds its final size. | 28 weeks |
| Has fingernails and toenails; Subcutaneous fat developing; Skeletal system soft and flexible; | 32 weeks |
| Lanugo disappearing. | 36 weeks |
| Fetus ready for extrauterine life; Vernix only increases and skin folds; Lanugo on shoulders, forehead, and back; Firm earlobes; Creases over soles of feet. | 38-40 weeks |