Title: Stages of fetal growth and development
Headings: Stages of fetal growth and development
Stages of fetal growth and development
Stages of fetal growth and development

Content: arm buds are more developed with finger ridges beginning to appear• Rudiments of the eyes, ears, and nose appear
7. • Lung buds are developing• Primitive intestinal tract is developing• Primitive cardiovascular system is functioning• Neural tube, which forms the brain and spinal cord, closes by the fourth week
8. LUNAR MONTH
9. • 7 to 10 weeks of growth• The middle of this period (9 weeks) marks the end of the embryonic period and the beginning of the fetal period• At the end of 10 weeks of growth, the fetus is approximately 2½ inches (6.3 cm) from crown to rump and weighs ½ oz (14 g)• Appearance of external genitalia• By the middle of this month, all major organ systems have formed
10. • The membrane over the anus has broken down• The heart has formed four chambers (by seventh week)• The fetus assumes a human appearance• Bone ossification begins• Rudimentary kidney begins to secrete urine
11. LUNAR MONTH
12. • 11- to 14-week-old fetus• At the end of 14 weeks of growth, the fetus is approximately 4¾ inches (12 cm) crown- rump length and 3¾ oz (110 g)• Head erect; lower extremities well developed• Hard palate and nasal septum have fused• External genitalia of male and female can now be differentiated• Eyelids are sealed
13. LUNAR MONTH
14. • 15- to 18-week-old fetus• At the end of 18 weeks of growth, the fetus is approximately 6¼ inches (16 cm) crown-rump length and 11¼ oz (320 g)• Ossification of fetal skeleton can be seen on X-ray
15. •