New LRA 225 W1 UPDATED ACTUAL Questions and
CORRECT Answers
How many cranial bones make up the skull? Eight cranial bones.
Which bones form the calvarium or skullcap? Frontal, right parietal, left parietal, and occipital bones.
What are the three parts of the temporal bone? Squamous, mastoid, and petrous parts.
Which cranial bone contains the sella turcica? Sphenoid bone.
How many bones articulate with the occipital bone? Six bones.
What are the names of the cranial sutures? Coronal, sagittal, lambdoidal, and squamosal.
What are the auditory ossicles? Malleus, incus, and stapes.
What is the function of the Eustachian tube? To equalize pressure between the middle ear and nasopharynx.
Which cranial bone articulates with all other cranial bones? Sphenoid bone.
Name the four groups of paranasal sinuses. Frontal, maxillary, ethmoid, and sphenoid sinuses.
What is the main function of the maxillary sinuses? To drain into the nasal cavity and display air-fluid levels.
Which bones form the bony nasal septum? Vomer and perpendicular plate of the ethmoid bone.
Which facial bone forms the upper jaw? Maxilla.
How many bones make up the orbit? Seven bones (three cranial and four facial).
What is the most common positioning error in skull Rotation.
radiography?
Which bone forms the forehead? Frontal bone.
How many facial bones are there? Fourteen facial bones.
Name the cranial bones. Frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones.
What projection is used to examine the frontal sinuses? PA axial projection.
What are the positioning landmarks for the skull? Glabella, nasion, acanthion, and external auditory meatus.
CORRECT Answers
How many cranial bones make up the skull? Eight cranial bones.
Which bones form the calvarium or skullcap? Frontal, right parietal, left parietal, and occipital bones.
What are the three parts of the temporal bone? Squamous, mastoid, and petrous parts.
Which cranial bone contains the sella turcica? Sphenoid bone.
How many bones articulate with the occipital bone? Six bones.
What are the names of the cranial sutures? Coronal, sagittal, lambdoidal, and squamosal.
What are the auditory ossicles? Malleus, incus, and stapes.
What is the function of the Eustachian tube? To equalize pressure between the middle ear and nasopharynx.
Which cranial bone articulates with all other cranial bones? Sphenoid bone.
Name the four groups of paranasal sinuses. Frontal, maxillary, ethmoid, and sphenoid sinuses.
What is the main function of the maxillary sinuses? To drain into the nasal cavity and display air-fluid levels.
Which bones form the bony nasal septum? Vomer and perpendicular plate of the ethmoid bone.
Which facial bone forms the upper jaw? Maxilla.
How many bones make up the orbit? Seven bones (three cranial and four facial).
What is the most common positioning error in skull Rotation.
radiography?
Which bone forms the forehead? Frontal bone.
How many facial bones are there? Fourteen facial bones.
Name the cranial bones. Frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones.
What projection is used to examine the frontal sinuses? PA axial projection.
What are the positioning landmarks for the skull? Glabella, nasion, acanthion, and external auditory meatus.
