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Facial/Nasal Bones
Facial and Nasal Bones Study Guide
| Question | Answer |
|---|---|
| How many facial bones are there? | 14 |
| How many nasal bones are there? | 2 |
| How many lacrimal bones are there? | 2 |
| How many maxillary bones are there? | 2 |
| How many zygomatic bones are there? | 2 |
| How many palatine bones are there? | 2 |
| How many vomer and mandible bones are there? | 1 each |
| What do the nasal bones come together to form? | The superior bony wall of the nasal cavity (also called the bridge of the nose) |
| Where do the two nasal bones connect? | Midsagittal plane |
| Superiorly, what do the nasal bones articulate with? | Frontal bone |
| Postero-superiorly, what do the nasal bones articulate with? | Perpendicular plate of the ethmoid bone |
| What do the nasal bones articulate with lateraly? | Maxillae |
| True or False: The lacrimal bones are the two smallest bones in the skull. | True |
| Where are the lacrimal bones located? | The anterior part of the medial wall of the orbits |
| Between which two bones do the lacrimal bones lie? | The labyrinth of ethmoid and the maxilla |
| What passes through each of the lacrimal foramen? | The tear ducts |
| What bones do the lacrimal bones articulate with? | Frontal, ethmoid, maxilla, and inferior nasal concha |
| True or False: The maxillary bones are the largest immovable bones of the face. | True |
| Despite articulating with all other facial bones, what bone do the maxillary bones not articulate with? | Mandible |
| Which cranial bones do the maxillary bones articulate with? | Frontal and ethmoid |
| What do the maxillary bones help form? | Part of the lateral walls and most of the floor of the nasal cavity, part of the floor of the orbits, and 3/4 of the roof of the mouth |
| What process do the maxillary bones have that form part of the cheek? | Zygomatic process |
| What are the large, pyramidal cavities called? | Maxillary sinuses |
| Where are the infraorbital foramen located? | Under each orbit |
| What passes through the infraorbital foramen? | Infraorbital nerve and artery |
| What process supports the roots of the teeth? | Alveolar process |
| The junction of the maxillary bones come together to form what? | Anterior nasal spine |
| What is the midpoint of the anterior nasal spine called? | Acanthion |
| What bones form the prominence of the cheeks? | Zygomatic bones |
| What do the zygomatic bones come together to form? | Lateral wall and floor of orbits |
| What process extends posteriorly to join the zygomatic process of the temporal bone? | Temporal process |
| The zygomatic arch is formed by what? | The temporal process of the zygoma, and the zygomatic process of the temporal bone |
| What bone do the zygomatic bones articulate with superiorly? | Frontal bone |
| Lateraly, what process do the zygomatic bones articulate with? | Zygomatic process of temporal bone |
| Anteriorly, what bones do the zygomatic bones articulate with? | Maxilla |
| What bone do the zygomatic bones articulate with posteriorly? | Sphenoid |
| The palatine bones are what shaped? | L-shaped |
| What kinds of plates are the palatine bones composed of? | Vertical and horizontal |
| What do the horizontal plates of the palatine bones articulate with and what do they form? | They articulate with the maxillae to complete the roof of the mouth |
| What plate of the palatine bones come together to form the lateral walls of the posterior nasal cavity? | Vertical plate |
| What two different bones do the palatine bones articulate with? | Maxillae and sphenoid |
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