What is the shape of the anterior fontanelle?

Correct option is C

Ans. (c)
Sol. The anterior fontanelle is the largest soft spot on a newborn’s skull, located at the junction of the frontal and parietal bones. It has a diamond-shaped appearance and usually closes by 18 months of age. It allows for the flexibility of the skull during birth and brain growth after birth.
Explanation of each option:
· (a) Square – Incorrect; the anterior fontanelle is not square-shaped.
· (b) Rectangular shape – Not the correct anatomical description.
· (c) Diamond – Correct answer. Anterior fontanelle is diamond-shaped.
· (d) Triangular shape – Describes the posterior fontanelle, not anterior.