Term
| Name the two components of the skull |
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Definition
1. Facial skeleton
2. Cranial vault |
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Term
| How many bones in the facial? |
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Definition
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Term
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Definition
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Term
| What is the most superior bone of the frontal view of the skull? |
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Definition
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Term
| (T/F) This bone is paired |
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Definition
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Term
| (T/F) This bone has two plates |
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Definition
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Term
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Definition
Vertical plate - forehead
Horizontal plate - roof of orbit/floor of anterior cranial fossa |
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Term
| Describe the contribution of the vertical plate to the orbit? |
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Definition
| The lower margin of the forehead features the upper orbital border |
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Term
| Name the two other features of the frontal bone |
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Definition
1. The frontal sinuses
2. Supraorbital foramen (superior orbital notch) |
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Term
| How many parietal bones are there? |
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Definition
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Term
| Which feature unites these two bones? |
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Definition
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Term
| What is the function of the parietal bones? |
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Definition
| To form the walls and roof of the cranium |
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Term
| Which other bones do the parietal bones articulate with? |
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Definition
| 1. Frontal 2. Temporal 3. Occipital 4. Sphenoid |
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Term
| (T/F) The occipital bone is paired |
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Definition
| False, it is a single bone |
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Term
| What is the function of it? |
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Definition
| Forms the back and posterior portion of the base of the skull |
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Term
| What are the 7 main features of it? |
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Definition
1. Foramen magnum
2. Occipital chondyles
3. Hypoglossal canals
4. Jugular foramen
5. Superior nuchal line
6. Occipital protuberence
7. Clivus |
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Term
| How many temporal bones are there? |
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Definition
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Term
| What is the function of the temporal bone? |
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Definition
| Forms the sides of the skull, and contains the auditory devices |
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Term
| What are the 3 major auditory components contained within the sphenoid bone? |
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Definition
1. Auditory tube (bony section)
2. Middle ear
3. Inner ear |
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Term
| What type of bone is the upper temporal? What structure does it form? |
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Definition
| Squamous (flat) - forms the temporal fossa (temple) with contributions from sphenoid, and parietal bones as well |
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Term
| What type of bone is the lower temporal? Name the 10 features/contributions the temporal bones make. |
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Definition
Petrous (nonflat);
1. Internal acoustic meatus
2. External acoustic meatus
3. Zygomatic, styloid and mastoid processes,
4. foramen lacerum
5. carotid canal
6. part of the jugular foramen
7. Stylomastoid foramen
8. Mandibular fossa |
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Term
| How many sphenoid bones are there? |
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Definition
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Term
| Name the 3 portions of it? |
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Definition
1. Greater wing
2. Lesser wing
3. Body |
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Term
| Name the 4 prominent features of the body of the sphenoid bone? |
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Definition
1. Sphenoid sinuses
2. Sella turcica
3. Posterior clinoid processes
4. Jugum |
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Term
| Where are the greater wings of the sphenoid attached to? |
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Definition
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Term
| What 3 structures does the greater wing help form? |
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Definition
1. Floor of middle cranial fossa
2. Part of temporal fossa
3. Orbit |
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Term
| (T/F) The greater wing contributes to the superior orbital fissure |
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Definition
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Term
| What 3 major foramen does it contain? |
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Definition
1. Foramen rotundum
2. Foramen ovale
3. Foramen spinosum |
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Term
| What 3 structures do the lesser wings contribute to/contain? |
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Definition
| 1. Forms the posterior margin of the anterior cranial fossa 2. Anterior clinoid processes 3. Upper margin of superior orbital fissure |
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Term
| Where are the optic canals located, relative to the clinoid processes? |
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Definition
| They are medial to the anterior clinoid processes, and anterior to the sella turcica |
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Term
| What is the major structure of the sphenoid not related to the greater/lesser wings, that is attached to the body? |
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Definition
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Term
| What are the two main features of the PP? |
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Definition
| Medial and lateral pterygoid plates |
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Term
| What is found between the medial and lateral plates? |
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Definition
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Term
| Describe the makeup of the ethmoid bone? |
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Definition
1. Vertical plate
2. Horizontal plate
3. Two lateral masses |
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Term
| What are the 3 contributions of the ethmoid bone to skull features? |
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Definition
1. Forms most f nasal skeleton
2. Forms the medial wall of the orbit
3. Forms a small medial/anterior section of the anterior cranial fossa |
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Term
| What are the two features present on the portion of the ethmoid that contributes the anterior cranial fossa? |
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Definition
| 1. Crista galli (vertical plate) 2. Cribiform plate (horizontal plate) |
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Term
| What is contained within the nasal component of the ethmoid? |
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Definition
| The two lateral masses, as well as the vertical plate |
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Term
| What is contained within each lateral mass? |
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Definition
1. Ethmoidal air cells
2. Superior nasal choncha
3. Middle nasal concha |
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Term
| What is the function of the vertical plate within the nasal portion of the ethmoid? |
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Definition
| Helps form the bony nasal septum |
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Term
| What is found inferior to the nasal portion of the ethmoid? |
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Definition
| The inferior nasal concha |
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Term
| (T/F) This is a paired, shell shaped bone |
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Definition
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Term
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Definition
| Forms part of the lateral wall of the nose, including the lowest concha on either side |
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Term
| (T/F) The maxilla is a paired bone |
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Definition
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Term
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Definition
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Term
| What feature is contained within the maxilla? |
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Definition
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Term
| What is the function of the maxilla? |
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Definition
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Term
| What are the main features of the maxilla? |
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Definition
1. Superior alveolar process
2. Palantine process
3. Zygomatic process
4. Frontal process
5. Infraorbital foramen
6. Incsive foramen |
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Term
| How much of the hard palate does the maxillary bone form? |
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Definition
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Term
| Describe the contributions of the maxillary bone? |
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Definition
1. Medial border/wall of orbit
2. Inferior border and floor of orbit |
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Term
| Which bone is found inferior to the maxilla? |
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Definition
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Term
| (T/F) This bone is paired |
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Definition
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Term
| What is the vertical arm called? Horizontal arm? |
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Definition
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Term
| What is the mental protuberance? |
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Definition
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Term
| List the features of the ramus |
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Definition
1. Condyloid (articular) process
2. Coronoid process |
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Term
| What is the function of the condyloid process? |
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Definition
| Articulates with the mandibular fossa of the temporal bone to form the temporomandibular joint |
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Term
| What is the function of the coronoid process? |
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Definition
| Provides attachment for the temporalis muscle |
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Term
| Where do the body and ramus of the mandible meet? |
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Definition
| At the angle of the mandible |
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Term
| (T/F) The body has a thicker, lower base |
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Definition
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Term
| What is this base designed to support? |
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Definition
| The inferior alveolar process |
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Term
| What are the other prominent features of the body? |
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Definition
1. Mandibular foramen
2. Mental foramen |
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Term
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Definition
| Nerves to pass to the lower teeth |
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Term
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Definition
| Deep at the angle of the mandible |
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Term
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Definition
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Term
| Name the 3 processes on each zygomatic bone |
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Definition
1. Frontal
2. Maxillary
3. Temporal |
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Term
| Which bone does the zygomatic bone form the zygomatic arch with? |
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Definition
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Term
| Describe the contributions of the zygomatic bone |
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Definition
1. The wall and lateral border of the orbit
2. The lateral half of the inferior border and floor of orbit |
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Term
| List the main features of the palantine bone? |
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Definition
1. L shaped
2. Horizontal process |
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Term
| Describe the contributions of the palantine bone |
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Definition
1. Posterior fifth of the hard palate
2. posterior third of the lateral nasal wall |
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Term
| Where is the lacrimal bone found? |
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Definition
| On the medial wall of the orbit |
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Term
| List the two contributions |
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Definition
1. Partially forms the opening of the nasolacrimal duct
2. Contributes to the lateral nasal wall |
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Term
| What bone makes up the lower, posterior portion of the bony nasal septum? |
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Definition
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Term
| What is the function of the nasal bones? |
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Definition
| Form the bridge of the nose |
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Term
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Definition
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Term
| Where is the hyoid bone found? |
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Definition
| Below the floor of the mouth |
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Term
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Definition
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Term
| What are the 3 sections of the hyoid? |
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Definition
1. Body
2. Superior cornu (horn)
3. Inferior cornu (horn) |
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