the skull Flashcards
what is the oropharyngeal isthmus
the door to the oral cavity, controlled using velum
The skull comprises ___ bones
(Neuro)cranial bones: __ of them Viscerocranial/Facial bones: ___ of them
22, 8, 14
name all the neurocranial bones (numonic)!
which two have pairs of bones
old people from taiwain eat soup
▶ temporal bones: pair
▶ parietal bones: pair
▶ frontal bone
▶ occipital bone
▶ spheniod bone
▶ ethmoid bone
name the Viscerocranial/Facial bones: (numonic)!
my man posted zesty leaks, now its viral
▶ mandible
▶ maxilla: one pair
▶ palatine bone: one pair
▶ zygomatic bone: one pair
▶ lacrimal bone: one pair
▶ nasal bone: one pair
▶ inferior nasal concha: one pair
▶ vomer
Temporal Bones
Location:
Composition: Each temporal bone consists of three parts:
_______ - The flat, thin portion that forms the anterior and superior sections,
contributing to the zygomatic arch.
_____- Contains the mastoid process, important for muscle attachment.
_______- The dense, pyramidal-shaped section; houses the inner ear structures.
The ______ processes projects down and forward from this part.
Situated at the sides and base of the skull, flanking the brain laterally
▶ Squamous Part
Mastoid Part
▶ Petrous Part
styloid process
parietal bones general location and structure
which suture is mainly mentioned
____ Suture - Where the two parietal bones meet along the midline of the skull.
____ Suture - Where the parietal bones meet the frontal bone anteriorly.
____ Suture - Where parietal bones meet the occipital bone posteriorly.
_____ Suture - Where parietal bones articulate with the temporal bones
laterally.
Location: Occupy a large portion of the sides and roof of the cranial cavity.
Structure:
Broad, curved plates forming the upper lateral sides of the skull
MAIN: sagital
Sagittal Suture - Where the two parietal bones meet along the midline of the skull.
▶ Coronal Suture - Where the parietal bones meet the frontal bone anteriorly.
▶ Lambdoid Suture - Where parietal bones meet the occipital bone posteriorly.
▶ Squamosal Suture - Where parietal bones articulate with the temporal bones
laterally.
Frontal Bone location and structure (kind of one description)
Single bone that includes the forehead, the roofs of the orbits (upper part of orbital cavity), and most of the anterior cranial floor.
the occipital bone houses the ____ ____
what is this?
foramen magnum
where the spinal cord exits the skull.
sphenoid bone location and structure
suture?
Location: Located at the base of the skull in between the temporal and frontal
bone
Structure: Butterfly-shaped bone that forms part of the floor of the cranial cavity. Forms part of the sinus.
it actually articulates with all other cranial bones.
ethmoid bone location/structure
▶ Location: Situated at the roof of the nasal cavity and at the base of the cranium. ▶ Structure:
▶ Between the orbital cavities, forming part of the nasal septum and the lateral walls
and roof of the nasal cavity.
the ethmoid bone’s main job is:
connecting the 2 nasal channels
maxilla location/structure
▶ Location: Forms the upper jaw and parts of the orbit, nasal cavities, and hard
palate.
▶ Structure: Paired bones fused at the midline, containing the upper teeth.
mandible structure/location
Location: Lower jawbone
Structure: The largest and strongest bone of the face, holding the lower teeth.
what is the only moveable bone of the skull
mandible
zygomatic bone
structure (connects with?)/location
Location: Known as the cheekbone, it forms the prominence of the cheek.
Structure: Connects with the maxilla, temporal bone, sphenoid bone, and frontal
bone.
Forms part of the orbit, supporting the eye.
nasal bone structure/location
Location: Forms the bridge of the nose. Structure: Small paired rectangular bones that form the upper part of the nasal
septum.
lacrimal bone:
Contains the ____ that houses the _____, integral to the tear
drainage system.
Smallest and most fragile bone of the face. ▶ Small, thin bones forming part of the medial wall of each orbit.
lacrimal fossa, lacrimal sac
palatine bone location/structure
Location: Located at the back part of the nasal cavity and the roof of the mouth. ▶ Structure: L-shaped, contributing to the formation of the hard palate, nasal
cavity, and sinus.
the hard palate is made of anterior ____ and posterior ____
maxilla, palatine bone
which facial bone pushes food to the back of the mouth so we can swallow
palatine
vomer bone location/structure
Location: Forms part of the nasal septum, located in the midline of the nasal
cavity.
Structure: Thin, plowshare-shaped bone that divides the nasal cavity into left and
right nostrils.
inferior nasal conchae location/structure (similar)
Location: Project from the lateral walls of the nasal cavity.
Structure: Paired curved bones that form part of the lateral walls of the nasal
cavity.
During a medical school anatomy lab, a student is tasked with identifying the bone responsible for forming the posterior and inferior parts of the cranial cavity on a human skull model. The student learned that this bone is crucial for understanding the structural protection it provides to a lobe in that is located in the posterior aspect of the brain. Which bone is the student examining?
Occipital bone
Parietal bone
Frontal bone
Sphenoid bone
occupital
John is investigating how the structure of the oral cavity supports articulation in different languages. Specifically, he’s focusing on the bony framework that makes up the roof of the mouth—an area critical for producing many speech sounds. Which of the following bones contribute to the formation of the hard parts of our palate?
The Sphenoid bone
The palatine bone
Both maxilla and palatine bones
The maxilla
Both maxilla and palatine bones
Which of the following is true about the zygomatic bone?
It articulates only with the hyoid bone.
It forms the lower jaw and houses the lower teeth.
It connects the nasal cavity to the auditory tube
It forms the prominence of the cheek and part of the lateral wall of the orbit
It forms the prominence of the cheek and part of the lateral wall of the orbit
Which of the following is true about the tensor veli palatini (tensor palati) muscle?
It flattens and tenses the soft palate and helps open the auditory (Eustachian) tube.
It retracts the tongue and narrows the oropharynx.
It originates from the posterior border of the hard palate.
It elevates the soft palate to close off the nasal cavity during swallowing.
It flattens and tenses the soft palate and helps open the auditory (Eustachian) tube.
Both the left and right parietal bones intersect with foramen magnum at the lambdoidal suture.
True
False
false
The palatine aponeurosis serves as a fibrous framework for the soft palate and provides an insertion point for both the tensor veli palatini and levator veli palatini muscles.
True
False
true
