Skull Anatomy Quiz

Skull Anatomy

Frontal Bone: Forms the forehead and the upper parts of the eye sockets.
Parietal Bone: Located on the upper sides of the skull, contributing to the cranial cavity.
Coronal Suture: Junction between the frontal and parietal bones.
Sagittal Suture: Connects the two parietal bones along the midline.
Temporal Bone: Situated at the sides and base of the skull, involved in the structure of the ear.
Squamous Suture: Between the temporal and parietal bones.
Squamosal Part of Temporal Bone: Forms part of the side of the skull, accommodating the external auditory canal.
Zygomatic Process of Temporal Bone: A bony projection that articulates with the zygomatic bone.
Mandibular Fossa: Depression in the temporal bone where the mandible articulates.
Tympanic Part of Temporal Bone: Forms the floor and walls of the external acoustic meatus.
External Acoustic Meatus: The ear canal leading to the eardrum.
Styloid Process of Temporal Bone: A slender pointed piece of bone that serves as an attachment point for muscles and ligaments.
Mastoid Part of Temporal Bone: Contains air cells and is located behind the ear.
Mastoid Process: The bony projection behind the ear; serves for muscle attachment.
Occipital Bone: Forms the back and base of the skull, containing the foramen magnum.
Lambdoidal Suture: Junction between the occipital bone and the parietal bones.
Foramen Magnum: Large opening in the occipital bone through which the spinal cord exits the skull.
Hypoglossal Canal: Passage for the hypoglossal nerve, located near the foramen magnum.
Body of Sphenoid Bone: Central portion of the sphenoid that houses the sphenoidal sinuses.
Ethmoid Bone: Complex bone located between the nasal cavity and the orbits, contributing to both structures.
Maxilla: Upper jawbone that holds the upper teeth and forms part of the orbits.
Zygomatic Bone: Cheekbone; forms part of the eye socket and side of the skull.
Lacrimal Bone: Small bones forming part of the eye socket; contains the lacrimal sac.
Vomer: Bone forming the lower part of the nasal septum.
Mandible: Lower jawbone; the only movable bone of the skull.
Alveolar Process: The bony ridge containing the sockets for teeth.
Supraorbital Margin: The upper edge of the eye socket that supports the frontal bone.
Stylomastoid Foramen: Passage for the facial nerve, located between the mastoid process and styloid process.
Petrous Part of Temporal Bone: Dense portion that houses the inner ear structures.
Carotid Canal: Passage for the internal carotid artery into the cranial cavity.
Jugular Foramina: Openings for the jugular vein and cranial nerves, located at the base of the skull.
Internal Acoustic Meatus: Passage within the temporal bone for the vestibulocochlear nerve.
External Occipital Protuberance: Bony prominence on the back of the skull for muscle attachment.
Occipital Condyles: Articulate with the first cervical vertebra (atlas).
Sella Turcica: Depression in the sphenoid bone that houses the pituitary gland.
Greater and Lesser Wings of Sphenoid Bone: Extend laterally to support the skull and provide attachment surfaces for muscles.
Pterygoid Plates: Include lateral and medial plates; involved in jaw movement.
Superior Orbital Fissure: Space between the greater and lesser wings of the sphenoid, allowing the passage of several cranial nerves.

Nasal and Facial Bones

Perpendicular Plate of the Ethmoid Bone: Forms part of the nasal septum.
Orbital Plate of the Ethmoid Bone: Contributes to the medial wall of the eye socket.
Middle Nasal Conchae: Projections that help to filter and humidify air in the nasal cavity.
Cribriform Plate: Thin bone that supports the olfactory bulbs, perforated for olfactory nerves.
Crista Galli: Vertical projection serving as an attachment point for protective dura mater.
Infraorbital Foramina: Openings below the orbits for the infraorbital nerve and vessels.
Inferior Orbital Fissure: Space in the eye socket allowing passage of nerves and blood vessels.
Orbital Surface of Maxilla: Forms part of the floor of the orbit.
Hard Palate: Bony structure forming the roof of the mouth and the floor of the nasal cavity.
Palatine Bone: Forms the back part of the hard palate and part of the floor of the nasal cavity.
Temporal Process of the Zygomatic Bone: Projection that articulates with the temporal bone.
Inferior Nasal Conchae: Bone that forms part of the lateral wall of the nasal cavity.

Mandible Anatomy

Body of Mandible: Horizontal portion containing the mandible and holding the lower teeth.
Mental Foramina: Openings that allow passage for the mental nerve.
Mandibular Foramen: Opening on the medial surface for nerves and blood supply to the lower jaw.
Ramus of Mandible: Vertical section on either side of the mandible.
Angle of Mandible: Junction between the body and ramus of the mandible.
Condylar Process of Mandible: Articulates with the temporal bone at the mandibular fossa.
Coronoid Process of Mandible: Anterior projection for muscle attachment.
Mandibular Notch: The curve between the condylar and coronoid processes.

Vertebral Column

Cervical Vertebrae: The first seven vertebrae of the spine, supporting the neck.
Thoracic Vertebrae: Twelve vertebrae supporting the thorax; each articulates with ribs.
Lumbar Vertebrae: Five vertebrae in the lower back, characterized by larger bodies to support weight.
Sacrum: Triangular bone at the base of the spine composed of five fused vertebrae.
Coccyx: Tailbone, formed from four fused vertebrae.
Intervertebral Discs: Cartilaginous pads between vertebrae that provide cushioning and support.