Lambdoid Suture
The structure indicated is the
lambdoid suture.
Sutures are junctions between the bones of the skull – they are a type of fibrous joint, bound together by
Sharpey’s fibres.
Fibrous joints are fixed, immobile joints, with no joint cavity, and connected by fibrous connective tissue. There are three types of fibrous joint.
1)
Suture (joints between skull bones)
2)
Syndesmosis (joints between long bones of forearm and leg)
3)
Gomphosis (joints between roots of a tooth and socket in jaw)
The
lambdoid suture joins the
parietal bones with the
occipital bone, and is continuous with the
occiptomastoid suture.
The name of the suture comes from its shape, which resembles the Greek letter Lambda (
λ).