Foetal anatomy Flashcards
What are the seven major bones of the foetal skull?
Occipital
Temporal x2
Parietal x2
Frontal x2
What are fontanels?
Gaps between the bones of the skull
What are the two major fontanels in the foetal skull?
Anterior
Posterior
What shape is the anterior fontanel?
Diamond
What shape is the posterior fontanel?
Triangular
Where are coronal sutures found in the foetal skull?
Moving laterally between frontal and parietal bones
Where is the sagittal suture found?
Running longitudinally between the two parietal bones
What is moulding?
Movement of one foetal bone over another during partum
What is an important location on the foetal parietal bone?
Parietal eminence
What is the distance between the two parietal eminences called?
Biparietal diameter
What is the distance between the front and back of the foetal skull called?
Occipitofrontal diameter
What is greater, the biparietal or occipitofrontal diameter?
Occipitofrontal diameter
What is the vertex of a foetal skull?
A diamond between the anterior and posterior fontanelles and the parietal eminences
How does the foetus rotate during partum?
Head starts L or R in pelvic inlet
Head rotates to face occipitoanterior (OA)
Body rotates L or R to allow shoulders out
How does the foetal head position change during partum?
Starts with flexed neck- chin on chest
Neck extends during birth
