fetal skull Flashcards
what are the 3 divisions of the fetal skull
the vault
the base
the face
what 3 areas of the vault divided into
the forehead, the vertex, the occiput
what does the base of the skull protect
the medulla oblongata
how many bones are the face composed of
14 small bones - firmly unites and not compressible
what is the function of the fetal skull
protects the brain from pressure during birth, has the ability to change shape during labour
name the bones of the fetal skull
occipital bone - back of head
2 parietal bones - on either side
2 frontal bones - form the sinciput
Temporal bone - both sides forming the vault
name all the sutures in the skull
lambdoidal
sagittal
coronal
frontal
describe the lambdoidal suture
separates occipital bone and 2 parietal bones
describe the sagittal suture
between the 2 parietal bones
describe the coronal suture
separates frontal bones from parietal bons
describe the frontal suture
between 2 halves of the frontal bone
what is the anterior fontanelle also called
bregma
what is the posterior fontanelle also known as
lambda
where is the anterior fontanelle situated
at junction of sagittal, coronal and frontal sutures
where is the posterior fontanelle situated
at junction of lambdoidal and sagittal sutures
what does MV stand for
mentrovertical
what does OF stand for
occipitofrontal
what does SOB stand for
suboccipitobregmatic
what does SOF stand for
suboccipitofrontal
what does SMB stand for
submentobregmatic
what does SMV stand for
submentovertical
what is moulding
the shape changes that happen as the skull passes through the birth canal. It can reduce skull diameter by up to 1.5cm
