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Skull Bones/landmark
Contains material from BIO 201 lab
| Term | Definition |
|---|---|
| Coronal Suture | Fibrous joint between frontal and parietal bones |
| Sagittal Suture | Fibrous joint between two parietal bones |
| Lambdoid Suture | Fibrous joint between occipital bone and parietal bones |
| Squamous | Fibrous joint between parietal bone and temporal bone |
| Frontal bone | Forehead bone; supraorbital foramen and glabella |
| Supraorbital foramen | Small grove at superior and medial margin of orbit in the frontal bone |
| Glabella | Superior to nasal bone; groove near the bottom of the frontal bone between the eyebrows |
| Parietal bones | Pair of bones that form the roof and sides of the skull |
| Temporal bones | Pair of bones located where the temples are, houses the ears |
| External acoustic meatus | Passageway on the temporal bone that guides sound waves to the tympanic membrane |
| Internal acoustic meatus | Passageway on the temporal bone that houses the ossicles and the cochlea |
| Zygomatic process of the temporal bone | Landmark on the temporal bone that links the temporal bone to the zygomatic bone |
| Mastoid process | Attachment site on the temporal bone for the neck muscles that allow the head to move |
| Styloid process | A slender point on the temporal bone that serves as the attachment point of the muscles of the tongue and larynx |
| Mandibular fossa | Depression on the temporal bone that articulates with the mandibular condyles of the mandible; together, it forms the temporomandibular joint |
| Carotid canal | Passageway in the temporal bone for the internal carotid artery, which supplies blood to the brain |
| Jugular foramen | Passageway in the temporal bone for the jugular vein, which drains blood from the brain |
| Occipital Bone | The bone that forms the base of the skull, where the spinal cord passes |
| Occipital Condyle | Articulates with the atlas vertebrae to allow the head to move up, down , and side to side |
| Foramen Magnum | The brain stem extends through this to connect to the spinal cord |
| Hypoglossal Canal | Contains the nerve that innervates the tongue |
| Sphenoid Bone | Butterfly-shaped bone embedded inside skull |
| Greater Wing | Larger wing on sphenoid bone |
| Lesser Wing | Smaller wing on sphenoid bone |
| Sella Turcia | "Turkish Saddle"--protects and houses pituitary gland |
| Optic Canal | Round hole in sphenoid bone that acts as a passageway for the optic nerve |
| Foramen Rotundum | Round hole in the sphenoid bone that allows nerves and arteries to pass through |
| Foramen Ovale | Oval hole in the sphenoid bone that allows nerves and arteries to pass through |
| Foramen Spinosum | Small hole in the sphenoid bone that allows nerves and arteries to pass through |
| Ethmoid bone | A bone with a sponge-like construction that is located above the nose and between the orbits |
| Perpendicular plate | Thin flattened landmark of the ethmoid bone that helps to form the nasal septum |
| Superior nasal concha | Landmark of the ethmoid bone directly above the middle nasal concha |
| Middle nasal concha | Landmark of the ethmoid bone that lodges branches of the olfactory nerve. |
| Crista galli | Fish fin-like structure on the ethmoid bone |
| Cribriform plate | Portion of the ethmoid bone where the olfactory foramina are found |
| Olfactory foramina | Small holes in the cribriform plate that allow olfactory nerves to pass through the skull from the nasal cavity |
| Vomer | Facial bone forming the lower and hinder nasal septum, named after a ploughshare |
| Palatine bones | A pair of facial bones that forms a quarter of the hard palate of the mouth |
| Inferior nasal concha | A pair of facial bones inside the nose that warms, moisturizes, and cleans the air breathed in |
| Nasal bones | A pair of facial bones that forms the upper nose bridge. |
| Mandible | A facial bone that forms the lower jaw and contains the lower teeth. |
| Coronoid process | A projection of the mandible to which a muscle moving the mandible upward attaches |
| Mandibular condyle/Condylar process | Rounded structure on the mandible that fits into the mandibular fossa to form a synovial joint that allows the muscle to move (temporomandibular joint) |
| Alveolar process | Ridges on the mandible and maxilla that help form the sockets that hold the teeth |
| Mandibular foramen | Hole in the mandible that contains the mandibular nerve and the vessels of the mandible |
| Mental foramen | Hole in the mandible that contains the branches of the inferior alveolar nerve and the mental vessels |
| Mental Protuberance | Landmark of the mandible that forms the size of the chin |
| Maxilla | Facial bone that forms the upper jaw and contains the upper teeth. |
| Infraorbital foramen | Landmark of the maxilla that contains the infraorbital vessels and nerve. |
| Palatine Process | A landmark of the maxilla that forms three quarters of the hard palate of the mouth |
| Lacrimal bone | Small facial bone located on the medial wall of the orbit that specifically helps with crying |
| Nasolacrimal canal | Landmark of the lacrimal bone that drains tears from the eyes into the nose |
| Zygomatic bone | Facial bone; cheek bones |
| Temporal process of the zygomatic bone | Landmark of the zygomatic bone that connects the zygomatic bone to the temporal bone |
| Zygomatic arch | A bridge of bone formed by projections of the temporal and zygomatic bones, functioning as an attachment site for a muscle moving the mandible and the ligaments that are holding the mandible in place |
| Hyoid Bone | NOT part of the skull--lies inferior to the mandible in anterior neck, and is not attached to another bone. Anchors throat, larynx, and tongue muscles |
| Lesser Horns | Small conical landmarks of the hyoid bone |
| Greater Horns | Landmarks of the hyoid bone that projects backwards, which flattens and tapers near the end |
Created by:
Rylyn27463
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