test 3 Flashcards
What are the 8 bones of the skull?
1 frontal 2 parietal 2 temporal 1 occipital 1 sphenoid 1 ethmoid
what are the 15 facial bones?
1 frontal 2 maxillary 2 nasal 1 vomer 2 inferior conchae 2 lacrimal 2 palatine 2 zygomatic 1 mandible
what is the smallest bone of the orbit
lacrimal bones
what 2 bones make the lacrimal fossa?
the maxillary and lacrimal
what are sutures?
the bones of the skull are immovable joints that are fused at the sutures.
what is the only movable joint in the skull?
the temporomandibular
what suture joins the frontal and parietal bones?
coronal suture
what suture joins the 2 parietal bones?
sagittal suture
what suture joins the parietal and occipital bones?
lambdoidal
what suture joins the temporal and parietal bones?
squamosal
what suture joins the temporal and zygomatic bones?
temporozygomatic
what suture joins the palatine bones?
median palatine
what suture joins the maxillae and palatine bones?
transverse palatine
how many bones do the palatine bones connect with?
4, occipital
frontal
temporal
sphenoid
what is an inion?
the highest point of the occipital protuberance
What goes through the foramina magnum?
spinal cord, vertebral arteries CN XI
What nerve is CN XI?
Accessory nerve
What goes through the hypoglossal canal?
hypoglossal nerve ( XII )
What nerve is CN XII
hypoglossal nerve
What goes through the jugular foramen? (formed by occipital and temporal bones)
internal jugular vein,
CN IX, X, XI
What nerve is CN X?
Vagus
What nerve is CN IX
glossopharyngeal
What is the foramen lacerum covered by?
cartilage plate (this is right below the internal carotid artery
What opens to the tympanic cavity?
external acoustic meatus
What houses CN VII and VIII
the internal acoustic meatus
what nerve si CN VII
facial
what nerve is CN VIII
vestibulocochlear
What nerve does the chord tympanic nerve come from?
the facial nerve, and goes through the petrotympanic fissure
What nerve goes through the stylomastoid foramen?
CN VII ( facial)
what cells compose the mastoid process?
mastoid air cells
what is the function of styloid process?
serves as an attachment for muscles and ligaments
how many processes do the temporal bone have?
4, styloid, mastoid, zygomatic and Postglenoid
What is the tubercle?
another name for the postglenoid process that is posterior to the temporomandibular joint. this aids in the movement of the mandible
What houses the pituitary gland?
Sella tucica
what forms the lateral walls of the orbit?
sphenoid bone .
Where does the maxillary nerve pass through?
foramen rotundum
Where does the mandibular nerve pass through?
foramen ovale
Where does the middle meningeal artery pass through?
Foramen spinosum
What nerve is CN II
the optic nerve
What nerves pass through the ethmoid bone?
olfactory nerves
what is the smallest bone of the face?
lacrimal bone
what are the two L shaped bones?
palatine bones
What are the 2 palatine foramens?
Greater and lesser palatine foramens.
What nerves pass through the mandibular foramina?
inferior alveolar nerve and vessels that innervate the gums and teeth
what passes through the mental foramen?
mental nerve and vessels.
what forms the floor of the orbital cavity?
maxillary bones
What bones do the maxillary articulate with?
frontal, nasal, lacrimal, ethmoid, SPHENOID, palatine and zygomatic
what foramen do the nasopalatien nerve and the branches of the sphenopalatine artery pass through?
the incisive foramen
where does the infraorbital foramen lie?
below the eyes and in front of the maxilla
what goes through the infraorbital fissure?
the infraorbital nerves and zygomatic nerves, infraorbital artery and ophthalmic vein.
Where is the alveolar process?
at the root of MAXILLARY teeth
where is the frontal process?
on top of the maxillary bone.
what are the 3 external fossae of the skull
temporal
infratemporal
pterygopalatien
these are important landmarks of the skull for locating muscles, blood vessels and nerves
what forms the temporal fossa?
zygomatic, frontal, greater wing of sphenoid, temporal and parietal this contains temporalis muscle
what divides the temporal and infratemporal fossae
the infratemporal crest of the greater wing
What nerve is CN V?
trigeminal nerve
what does the infratemporal fossa contain?
CN V mandibular division, pterygoid plexus, pterygoid muscles, maxillary artery and pranches
where is the pteygopalatine fossa located and what does it contain?
located between the pterygoid process of sphenoid bone and maxillary tuberosity and contains maxillary artery, pterygopalatien ganglion and maxillary nerve
What are the bones of the orbit?
frontal bone, maxillary bone, zygomatic bone, sphenoid bone, lacrimal, palatine, ethmoid
what makes up the roof of the orbit?
frontal bone and lesser wing of sphenoid bone
what makes up the floor of the orbit?
maxillary, zygomatic and palatine bones
what seperates the orbital floor from the lateral wall?
the inferior fissure
what forms the medial wall of the orbit?
maxillary, lacrimal, ethmoid, body of the sphenoid (rectangular)
what composes the lateral wall of the orbit?
the zygomatic, and greater wing
what artery enters through the optic foramen?
the ophthalmic artery