Propel Orthodontics 2016 Propel Orthodontics - a leading manufacturer and retailer of innovative orthodontic products like the Excellerator and VPro5. Simple, easy, fast. Learn more.
Week 38: Baby develops a firm grasp. Thirty-eight weeks into your pregnancy, or 36 weeks after conception, your baby is developing a firm grasp. Your baby's toenails have reached the tips of his or her toes. His or her brain might weigh about 14 ounces (400 grams). After birth, your baby's brain will continue to grow.
Boys hit their growth spurt at about age 11, and they can grow up to 4 inches a year for two years. Most of a boy's growth takes place between ages 12 and 15. Boys experience other physical changes during puberty, including the development of facial, pubic and underarm hair.