22 Questions
The ______ forms most of the superior and lateral aspects of the skull
parietal
The occipital condyles articulate with the ______
atlas
The crista galli is the attachment point for the ______
falx cerebri
The lacrimal fossa houses the ______
lacrimalsac
The mandibular symphysis is the medial fusion point of the ______ bones
mandibular
The zygomatic process contributes to the ______ arch
zygomatic
The palatine process forms the anterior hard ______
palate
The inferior nasal concha forms part of the lateral walls of the ______ cavity
nasal
The sella turcica is the seat of the ______ gland
pituitary
The foramen magnum allows passage of the spinal cord from the ______ to the vertebral canal
brain stem
The foramen rotundum is located in the medial part of the greater wing of the __________ bone.
sphenoid
The foramen ovale is a large, oval foramen posterior to the foramen rotundum, visible in an inferior view of the __________.
skull
The foramen spinosum transmits the middle meningeal artery, serving the internal faces of some cranial __________.
bones
The ethmoid bone lies between the sphenoid and the nasal bones, forming most of the bony area between the nasal cavity and the __________.
orbits
The superior surface of the ethmoid bone is formed by the paired horizontal cribriform plates, which help form the roof of the nasal cavity and the floor of the anterior cranial __________.
fossa
The cribriform foramina allow the filaments of the olfactory nerves to pass from the smell receptors in the nasal cavity to the __________.
brain
The coronal suture is where the parietal bones meet the ______ bone anteriorly
frontal
The sagittal suture is where the parietal bones meet superiorly at the cranial ______
midline
The lambdoid suture is where the parietal bones meet the occipital bone ______
posteriorly
The squamous suture is where a parietal and temporal bone meet on the ______ aspect of the skull
lateral
The occipital bone forms most of the skull's posterior wall and ______
base
The occipital bone articulates anteriorly with the paired parietal and temporal bones via the lambdoid and ______ sutures, respectively
occipitomastoid
Study Notes
Skull Bone Markings and Functions
- Cranial bones:
- Frontal bone: forms forehead, superior part of orbits, and most of the anterior cranial fossa; contains sinuses
- Parietal bone: forms most of the superior and lateral aspects of the skull
- Occipital bone: forms posterior aspect and most of the base of the skull; contains foramen magnum, hypoglossal canals, and occipital condyles
- Temporal bone: forms inferolateral aspects of the skull and contributes to the middle cranial fossa; has squamous, tympanic, and petrous parts
- Sphenoid bone: forms the keystone of the cranium; contributes to the middle cranial fossa and orbits
- Ethmoid bone: forms part of the nasal septum and the lateral walls and roof of the nasal cavity; contributes to the medial wall of the orbit
Facial Bones
- Nasal bones: form the bridge of the nose
- Lacrimal bones: form part of the medial orbit wall; contain lacrimal fossa
- Zygomatic bones: form the cheek and part of the orbit
- Inferior nasal conchae: form part of the lateral walls of the nasal cavity
- Mandible: the lower jaw; contains coronoid processes, condylar processes, mandibular symphysis, dental alveoli, and mandibular foramina
- Maxilla: forms the upper jaw and parts of the hard palate, orbits, and nasal cavity walls
- Palatine bones: form the posterior part of the hard palate and a small part of the nasal cavity and orbit walls
- Vomer: forms the inferior part of the nasal septum
- Auditory ossicles: involved in sound transmission in the middle ear cavity
Test your knowledge on the bones of the skull with this quiz covering the cranial bones, their functions, and important bone markings. Explore topics like the frontal bone, parietal bone, and their key anatomical features.
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