Chapter 4 Bones of the Cranial Skeleton Flashcards
(Bones of the cranial skeleton)
(Ethmoid): Cribriform plate
separates the cranial cavity from the nasal cavities and allows passage of olfactory nerves
(Bones of the cranial skeleton)
(Ethmoid): Superior nasal concha & Middle nasal concha
increases surface area to warm and humidify incoming air
(Bones of the cranial skeleton)
(Ethmoid): Perpendicular plate
contributes to the structure of the nasal septum
(Bones of the cranial skeleton) Sphenoid:
has great wings & lesser wings
(Bones of the cranial skeleton) (Sphenoid): Hypophyseal fossa (sella tursica)
houses the pituitary gland
(Bones of the cranial skeleton) (Sphenoid): Lateral pterygoid plates & Medial pterygoid plates
point of attachment for muscles of mastication
(Bones of the cranial skeleton)
(Frontal): Supraorbital margin
contributes to the orbital cavity
(Bones of the cranial skeleton)
(Frontal): Zygomatic process
articulates with the zygomatic bone
(Bones of the cranial skeleton)
(Parietal): Coronal suture
between frontal bone and parietal bones
(Bones of the cranial skeleton)
(Parietal): Squamosal suture
between temporal and parietal bone
(Bones of the cranial skeleton)
(Parietal): Sagittal suture
between both parietal bones
(Bones of the cranial skeleton)
(Parietal): Lambdoidal suture
between occipital and parietal bones
(Bones of the cranial skeleton): Craniosynostosis
when the sutures of the skull become ossified prematurely
(Bones of the cranial skeleton): Craniosynostosis, affects
Can affect one or more of the sutures,
Often requires surgery to separate the fused bones,
May or may not be associated with other genetic syndromes,
Can affect brain development/learning
(Bones of the cranial skeleton)
(Occipital): Foramen magnum
allows passage of the spinal cord to the brainstem
(Bones of the cranial skeleton)
(Occipital): Condyles
resting point for the first cervical vertebra
(Bones of the cranial skeleton)
(Temporal): External auditory meatus
ear canal
(Bones of the cranial skeleton)
(Temporal): Zygomatic process
articulates with the temporal process of zygomatic bone to form zygomatic arch
(Bones of the cranial skeleton)
(Temporal): Mandibular fossa
articulates with mandibular condyle to form the temporomandibular joint
(Bones of the cranial skeleton)
(Temporal): Styloid process
point of attachment for various muscles
(Bones of the cranial skeleton)
(Temporal): Mastoid process
point of attachment for various muscles of the neck
(Bones of the cranial skeleton)
(Temporal): Petrous part
houses the organs of hearing (cochlea) and equilibrium (semicircular canals)
