What are unossified points at the junction of sutures of an infant's skull called?

• A. Bregma
• B. Fontanelles
• C. Pterion
• D. Squamosal

Answer: (B)

Unossified points at the junction of sutures of an infant's skull are referred to as fontanelles. These are soft spots that allow for the growth of the skull and accommodate changes in head shape during birth. The presence of fontanelles is crucial during infancy as it facilitates the brain's rapid growth and development. The major fontanelles, such as the anterior and posterior fontanelles, provide access points for healthcare providers to assess hydration levels or detect possible abnormalities. Over time, these fontanelles will ossify and close, typically during the first couple of years of life, leading to a fully formed skull.