Saturday, February 26, 2011
24 weeks
Week Twenty Four: Practices breathing
The child is now gaining around 3 ounces (90 grams) a week.
Baby weighs about 1.3 pounds and is 12 inches long.
Baby weighs about 600 grams and is 30cm (crown to heel) long.
The eyelids can be seen very clearly.
If born at this stage is officially considered viable, they may well be able to survive.
The lungs are developing branches of the respiratory tree and cells that produce surfactant. This is a substance that helps the air sacs inflate easily and also keeps the small air sacs in our lungs from collapsing. The baby practices breathing by inhaling amniotic fluid into developing lungs. The unborn baby is covered with a fine, downy hair and the skin is protected by a waxy substance. Some of this substance may still be on the child's skin at birth at which time it will be quickly absorbed.
Baby gains about 3 ounces this week. The weight is in muscle, bone mass and organs. The body begins to fill out with its appearance increasingly becoming more like that of a newborn. Taste buds begin to form. If mom drinks something strange or bitter, baby may be observed showing his or her distaste.
Little creases have appeared on his palms. The muscular coordination of the hands has improved as they sucks their thumb. Over the next week or so, the sweat glands will be forming in the skin.
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