Skull Flashcards
How many bones does the skull contain?
29 bones
How many cranial bones does the Skull consist of?
8 bones
How many facial bones does the Skull consist of?
14 bones
Another word for the floating bone in the throat?
Hyoid bone
How many ear (auditory) ossicles are in the skull?
6 ossicles
How many paired facial bones do we have in the skull?
Six paired
How many single facial bones do we have in the skull?
Two singles
What are the two single facial bones that we have in the skull?
The mandible and vomer
What are the six paired facial bones that we have in the skull?
The maxillary, zygomatic, nasal, lacrimal, palatine, and inferior nasal concha bones.
What are the four single cranial bones that we have in the skull?
Frontal, occipital, ethmoid, and sphenoid
What are the two paired cranial bones that we have in the skull?
Temporal and parietal
How many paired cranial bones do we have in the skull?
Two paired
How many single cranial bones do we have in the skull?
Four singles
Cranial vault (cranium) is what portion of the skull?
The superior portion of the skull
Cranial base is what portion of the skull?
The Anterior portion of the skull
The Cranial base is divided into how many indentations?
3 indentations
The three indentations of the Cranial base are?
Anterior cranial fossa, middle cranial fossa, and posterior cranial fossa
How many cavities does the skull contain?
5 cavities
What are the 5 cavities of the skull?
Cranial cavity, Orbits, Paranasal sinuses, Nasal cavity, and Oral cavity
The superior dome like portion of the skull is called what?
Calvaria (skullcap)
How many fossae are in the cranial floor?
There are 3 fossae of the cranial floor
The brain fits into what?
The fossae
How many sutures are in the Cranial part of the skull?
There are 5 sutures
What are the names of the 5 sutures of the Cranial part of the skull?
Coronal, Sagittal, Lambdoidal, Squamous, Occipitomastoid
The function of the foramina in the cranial floor is to do what?
Most are for the passage of cranial nerves; blood vessels also pass through some
The bones that compose the anterior fossa?
The bones that compose the middle fossa?
The bones that compose the posterior fossa?
What are the four major sutures of the cranium?
Coronal, Sagittal, Lambdoidal, and Squamous
The Coronal suture articulates the?
Frontal bone to the two parietal bones
The sagittal suture articulates the?
The two parietal bones
The Lambdoidal suture articulates the?
The occipital bone to the two parietal bones
The Squamous suture articulates the?
The temporal bone to the two parietal bones
What is the clinical significance of the mastoid process?
what is the clinical significance of the thin, squamous portion of the temporal bone?
Why is the Hyoid bone referred to as the floating bone?
It is the only bone in the body that does not articulate with another bone
Why is the Sphenoid bone called the keystone of the cranium?
Why is the Hyoid bone called the keystone of the facial bones?
The five parts of the Mandible?
Body, Ramus, Mandibular condyle, Alveoli, and Mandibular symphosis
How many parts of the Mandible are there?
There are 5 parts of the mandible
How many parts of the Maxillae are there?
There are two parts of the Maxillae
What are the two parts of the Maxillae?
What 7 bones compose the orbit of the eye?
What 4 bones contain the paranasal sinuses?
What 2 bones compose the nasal septum?
What 2 bones compose the hard palate?
The palatine process and the palatine bone
What is the Mandibular condyle?
The site of articulation with temporal bone, providing the only freely moveable joint of the skull-the temporomandibular joint (TMJ)
Very thin; easily fractured section of the Temporal bone?
