Question

question 21
fontanels:
a are unossified portions of a newborns skull
b all of these
c eventually form sutures
d none of these
e are composed of fibrous connective tissue membrane

Explanation:

Fontanels are unossified (not yet turned to bone) areas in a newborn's skull made of fibrous connective tissue membrane. As the baby grows, these fontanels ossify and eventually form the sutures (joints between skull bones). So options A, C, and E are correct. Since option B says "all of these", and A, C, E are correct, B is the right answer.

Answer:

B. all of these