Skull Flashcards
How many bones are there in the skull?
22
Why are sutures important
sutures are fibrous joints that connect the bones
How is the mandible an exception?
However, the mandible articulates with the skull at the temporomandibular joint and the first cervical vertebra articulates with the skull at the atlanto-occipital joint. Both of these are synovial joints, the former being a joint of the head while the latter is regarded as a joint of the neck.
How many paired bones?
the maxillae, the inferior nasal conchae, as well as the zygomatic, palatine, nasal, and lacrimal bones.
How many unpaired?
mandible, ethmoid, and vomer, frontal, sphenoid, occipital
How is the shape of the skull formed?
he cranium is made up of flat bones. However, the bones of the facial skeleton are irregular in shape.
How do you distinguish a male skull from female skull
Male = ridges of the brows & larger mastoid
Female are smoother frontal bone & smaller mastoid
Why is the lambda landmark important?
Junction with sagittal suture with lamboidal suture & demarcates with membr. ossification
What is wormian bones
additional small bones sometimes found between the cranial sutures of the bones of the skull vault, most commonly in relation to the lambdoid suture.
What is the name of the sheath in the skull
Tentorium cerebelli
What does ventral mean
Towards belly
What does dorsal mean
Towards back
What does rostal mean
Towards the front of brain
What does caudal mean
Towards tail
Suture pairing for coronal
Frontal & parietal
Suture pairing for squamous
parietal & temporal
Suture pairing for lambdoid
Parietal & occipital
Suture pairing for sagittal
Left & right parietal
Suture pairing for occipitomastoid
Occipital & temporal
What is the insula
Gustatory cortex - taste sensation
Which opening is present in the middle cranial fossa?
foramen caecum
jugular foramen
hypoglossal canal
superior orbital fissure
superior orbital fissure
Identify which structure separates the frontal lobe from the parietal lobe
Coronal suture
Precentral gyrus
Postcentral gyrus
Central sulcus
Central sulcus
Where is the petrous part located
temporal bone (middle cranial fossa)
What are the 4 sutures of the skull?
Coronal, sagittal, lamboid and squamous
