Lab 3: Suture Structure and Function

Coronal suture

Connects frontal bone anteriorly with two parietal bones posteriorly

Lambdoid suture

Has a lambda shape that connects the occipital bone posteriorly and inferiorly and the two parietal bones superiorly

Squamous Suture

Only Bilateral suture Located on both sides of the cranium and connects the temporal bone inferiorly and parietal bone superiorly

Sagittal Suture

Perpendicular to coronal suture - Runs horizontally in an anterior to posterior fashion and connects the right and left parietal bone

Suture Functions

Type of fibrous joint- connected via dense connective tissue (strong and stale and tend to be immoveable) - During development and early life suture are wide and consist of a soft membrane ("soft spots") - Soft spots referred to as fontanelles: allow skull to grow rapidly as the developing Braine woads faster than the skull itself - Fontanelles ossifies into bine and forms sutures 2 months after birth and finish between 18-24 months of age