Which parental statements indicate correct understanding of the anatomy and physiology of the ...

2, 4
Explanation:
1. Infants are nose breathers through the first 6 months of life. This statement indicates the need for further education.
2. Infants often have difficulty with oral feedings when the nasal passage is blocked. This statement indicates correct understanding.
3. The size of the tonsils for the pediatric population varies; however, the tonsils are largest during school-age, not infancy. This statement indicates the need for further education.
4. First teeth often erupt during the first 6 months of life. This statement indicates correct understanding.
5. Children are not expected to lose teeth during infancy. This statement indicates the need for further education.