PHYSICAL GROWTH

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Across
  1. 4. The single cell formed by the fusion of sperm and egg at the start of human development.
  2. 5. The thing is 10.5 cm at birth, 16.5 cm at 1 year of age and 17.5 cm at 5 years of age
  3. 7. The developmental period before birth, beginning with fertilization and ending at delivery.
  4. 8. The process of structural and functional change that occurs over time in an individual.
  5. 9. The first teeth begin to appear in certain months after birth and are completed around the age of 2-3.
  6. 11. A developmental period marked by puberty and rapid physical, emotional, and hormonal changes.
Down
  1. 1. The process of bone formation by mineralization of cartilage or connective tissue.
  2. 2. Soft spots on a baby’s skull where the bones haven’t fused yet.
  3. 3. The developmental stage from the ninth week of pregnancy until birth.
  4. 6. The fusion of male and female gametes to form a zygote.
  5. 10. The outer germ layer that develops into skin, hair, nails, and the nervous system.