Skeletal, Muscular Chapters

The round opening in the orbital apex is the ____.

Optic Canal

The ___ contains and protects the eyeball and is a prominent feature of the anterior part of the skull.

Orbit

The occipital bone articulates with the first cervical vertebra or ____.

atlas

On the stout ____, a four-sided plate anterior to the foramen magnum has a midline projection on the occipital bone, the pharyngeal tubercle.

basilar part

The occipital bone forms the posterior part of the skull and the base of the ___.

cranium

The _____, is within the inner surface of the cranial cavity and present on the superior aspect of the bone and surrounding the crista galli, is perforated by numerous foramina to allow the passage of the olfactory nerves for the senses of smell.

cribiform plate

A vertical midline continuation of the perpendicular plate superiorly into the cranial cavity is the wedge- shaped ____.

crista galli

On the external surface of the occipital bone from an inferior view, it can be seen that the large ____ is completely formed by this bone.

foramen magnum

The _____ is a single cranial bone of the skull.

occipital bone

Lateral and anterior to the foramen magnum are the ___, a pair of curved and smooth projections on the occipital bone.

occipital condyles

The vertical plates of the ____ form a part of the lateral walls of the nasal cavity.

palatine bones

The occipital bone articulates with the _____, temporal bones, and sphenoid bone of the skull.

parietal bones

The anterior opening of the nasal cavity, the _____, is large and triangular.

piriform plate

Each lateral wall of the nasal cavity has three projecting structures or turbinates that extend inward from the maxilla that includes the ___, the middle nasal concha, and the inferior nasal concha.

superior nasal concha

Lateral to the optic canal is the curved and slitlike _______ which is located between the greater and lesser wings of the sphenoid bone.

superior orbital fissure

Anteriorly, the nasal septum is formed by both the perpendicular plate of the ____ superiorly and the nasal septal cartilage inferiorly.

ethmoid bone

The ______ forms the greatest part of the medial wall of the orbit.

ethmoid bone

The occipital bone is an irregular bone with ___ sides that is somewhat curved.

four

The orbital plates of the ____ create the roof or superior wall of the orbit.

frontal bone

Each ____ communicates with and drains into the nasal cavity by a constricted canal to the middle nasal meatus, the frontonasal duct.

frontal sinus

The inferior orbital fissure can also be noted between the ______ and the maxilla.

greater wing of the sphenoid bone

When tilting the skull, the prominent openings anterior and lateral to the foramen magnum are noted on the inferior view of the occipital bone, the paired ____.

hypoglossal canals

The _____ is a separate facial bone of the skull that forms off the lateral wall of the nasal cavity.

inferior nasal concha

The _____ are paired facial bones of the skull that project from the maxillae to form a part of the lateral walls of the nasal cavity.

inferior nasal conchae

The ______ connects the orbit with bone the infratemporal and pterygopalantine fossae; both the infraorbital and zygomatic nerves, which are branches of the maxillary nerve, and infraorbital artery enter the orbit through this structure.

inferior orbital fissure

The _____ of the occipital bone, which forms the medial part of the jugular foramen (the lateral part is from the temporal bone), is noted on the inferior view.

jugular notch

The _____ is located at the anterior medial corner of the orbit, with the orbital surfaces of the maxilla forming the floor or inferior wall.

lacrimal bone

The optic canal lies between the two roots of the ____.

lesser wing of the sphenoid bone

The floor of the nasal cavity is formed from the bones of the hard palate, the palatine processes of the ___ anteriorly and the horizontal plates of the palatine bones posteriorly.

maxillae

The lateral boundaries of the nasal cavity are mainly formed by the ____.

maxillae

Each lateral wall of the nasal cavity has three projecting structures or turbinates that extend inward that includes the superior nasal concha, the ____, and the inferior nasal concha.

middle nasal concha

The anterior openings to the nasal cavities are the ____, and the posterior openings are choanae, or posterior nasal apertures.

nares

The bridge of the nose is formed from the paired ____.

nasal bones

The ____ is the upper part of the respiratory tract and is located between the orbits, having both lateral walls and a floor, with anterior and posterior openings.

nasal cavity

Protected by each nasal concha is a channel, the ____, with each having openings through which the paranasal sinuses or nasolacrimal duct communicates with the nasal cavity.

nasal meatus

The vertical partition, the ____, divides the nasal cavity into two parts.

nasal septum

The ____, a midpoint cephalometric landmark, is located at the junction of the frontal and nasal bones.

nasion

The _____ communicate with and drain into the nasal cavity through an opening superior to each superior nasal concha.

sphenoidal sinuses

The posterior parts of the nasal septum are formed by the ___.

vomer

The ____ forms the anterior part of the lateral wall of the orbit.

zygomatic bone