Fine, wet crackling sounds usually caused by closed alveoli popping open when enough air pressure is applied. fluid in the lungs squeezes alveoli closed, making them unavailable for gas exchange until they can be forced open
a) true
b) false

Which of the following statements about brain development and early childhood is true? the brain of a 5 year old is 60 percent the size of an adult brain the overall size of the brain does not increase dramatically from ages 3-15 by the time a child is 3 years of age, the brain is 25 percent of it's adult size the development that occurs inside the brain ends at the onset of adolescence