Lambda (anatomy)
Encyclopedia
The occipital angle is rounded and corresponds with the point of meeting of the sagittal
and lambdoidal sutures—a point which is termed the lambda (after the Greek letter
of the same name); in the fetus this part of the skull is membranous, and is called the posterior fontanelle
.
Sagittal suture
The sagittal suture is a dense, fibrous connective tissue joint between the two parietal bones of the skull. The term is derived from the Latin word Sagitta, meaning "arrow". The derivation of this term may be demonstrated by observing how the sagittal suture is notched posteriorly, like an arrow,...
and lambdoidal sutures—a point which is termed the lambda (after the Greek letter
Lambda
Lambda is the 11th letter of the Greek alphabet. In the system of Greek numerals lambda has a value of 30. Lambda is related to the Phoenician letter Lamed . Letters in other alphabets that stemmed from lambda include the Roman L and the Cyrillic letter El...
of the same name); in the fetus this part of the skull is membranous, and is called the posterior fontanelle
Posterior fontanelle
The posterior fontanelle is a gap between bones in the human skull, triangular in form and situated at the junction of the sagittal suture and lambdoidal suture. It generally closes in 6-8 weeks from birth. A delay in closure is associated with congential hypothyroidism....
.