Anatomy and Oral Structures Flashcards
portion of skull that encloses the brain; 8 bones
cranium
two fan shaped bone one each side of skull in temporal area above ear
temporal bone
two bones, one on each side that make up the roof and side walls covering the brain
parietal bone
a single bone in the frontal or anterior region that makes up the forehead
frontal bone
a spongy bone located between the eye orbits that helps form the roof and part of the anterior nasal fossa of the skull
ethmoid bone
a large bat-shaped bone at the base of the skull between the occipital and ethmoid in front, and the parietal and temporal bones at each side
sphenoid bone
two facial bones, one under each eye, that form the cheekbone and give character to the face (malar bones)
zygomatic bone
two large facia bones, one under each eye, that unite in the center in the median suture to form the upper jaw that supports the maxillary teeth in the alveolar process
maxilla bones
two bones, one left and right, that unite at the median palatine suture to form hard palate of mouth and nasal floor
palatine bone
two bones, one left and one right, that unite at the median palatine suture to form the hard palate of mouth and the nasal floor
nasal bone
two small bones, one each on the inner side or nose site of the orbital cavity, that make up the corner of the eye where the tear ducts are located
lacrimal bone
two thin scroll-like bones that form the lower part of the interior of the nasal cavity
inferior concha bones
strong, horseshoe-shaped bone that forms the lower jaw
mandible bones
a single bone that forms the lower posterior part of the naval septum and separates the nose into two chambers
vomer bone
the largest of three ossicles in the middle ear; commonly called the ear mallet, the largest of three ossicles in the middle ear; commonly called the ear mallet
malleus bones
one of the three ossicles of the middle ear; commonly called the anvil
incus bones
one of the three ossicles in the middle ear; commonly called the stirrup
stapes bones
an air pocket or cavity in a bone that lightens the bone, warms the air intake, and helps form sounds.
sinus
larger accessory sinus, located in the frontal bone or the forehead
above each eye.
frontal sinus
multiple, smaller sinuses located in the ethmoid bone, at the side of each eye
ethmoid sinus
multiple, small sinuses located in the sphenoid bone situated behind the eyes.
sphenoid sinus
located in the maxilla; the ______ is the largest and is called the atrium of Highmore; this cavity is easily seen and is used as a landmark for identifying radiographs in the mounting of films.
maxillary sinus
a line where two or more bones unite in an immovable joint. Several main ____ are located in the cranium
suture
junction of the frontal and the parietal bones; this area
is soft at birth and shortly afterward, and it has been called the baby’s “softspot” or fontanel
coronal suture
the union line between the two parietal bones on the top of the skull.
sagittal suture
located between the parietal bone and the upper border of the occipital bone.
lambdoid suture
located between the temporal and parietal bones; also known as the squamous suture
temporoparietal suture
projection or outgrowth of bone or tissue
process
in the center of the mandible, forms the chin, and is called the mental or chin protuberance
symphysis
bone growth or border of the maxilla and the mandible; makes up and forms the tooth sockets
alveolar process
posterior growth on the ramus of the mandible; articulates with the temporal bone in the temporomandibular
condyloid process
anterior growth on the ramus of the mandible that serves as the attachment position for the temporalis muscle.
coronoid process
the projection of maxilla meeting with the frontal bone to form the eye orbit
frontal process
growth process from the zygomatic bone that articulates with the maxilla to form the lower side of the eye orbit.
infraorbital process
growth on the temporal bone behind the ear that is used for muscle attachment.
mastoid process
growth of the sphenoid bone extending downward from the bone; the most inferior end of the process is known as the ______ hamulus, a hook-like end that serves as a site for muscle attachment
pterygoid process
small, pointed growth from the lower border of the temporal bone; serves as a bone position for attachment of some tongue muscles.
styloid process
an opening or hole in the bone for nerve and vessel passage, anesthesia locations
foramen
a large opening in the temporal bone used for the passage of auditory nerves and vessels.
external auditory meatus
opening in the occipital bone for spinal cord passage; largest of all foramina.
magnum foramen
located on the lingual side of the ramus of the mandible; permits nerve and vessels passage to teeth and mouth tissues.
mandibular foramen
opening situated on left and the right anterior areas of the mandible; used for passage of nerve and vessels.
mental foramen
small opening in the center of the mental spine for nerve passage to the incisor area.
lingual foramen
opening in the maxilla behind the central incisors on the midline.
incisive foramen
an opening in the frontal bone above the eye orbit.
supraorbital foramen
an opening in the maxilla under the eye orbit
infraorbital foramen
anterior and posterior openings in the hard palate.
palatine foramen
an opening in the zygomatic bone.
zygomaticofacial foramen
fibrous membrane covering all bones
periosteum
when periosteum has a mucous surface
mucoperiosteum
mucous membrane that lines the inner surfaces of the lips and the cheeks
lining mucosa
elastic type of mucous membrane that undergoes stress and pull; located around the alveolar area of the teeth and lines the hard palate.
masticatory mucosa
smoother mucous tissue found on the dorsal side of the tongue.
specialized mucosa
ascending part of the mandible that arises from the curved, lower arch
ramus
area along the lower edge of the mandible where the upward curve of the mandible forms
angle of the mandible
S-shaped curvature between the condyle and coronoid processes; upper border of the mandible; also called the mandibular notch.
sigmoid notch
bony ridge on the lingual surface of the mandible.
mylohyoid ridge
slanted, bony growth ridge on the facial side of the mandible.
oblique line
space located to the rear of the mandibular molars.
retromolar area
center of mandible (chin); also known as mental protuberance (projection).
symphysis
comes together as a joint
articulates
a rounded protuberance at the end of some bones, forming an articulation with another bone
condyle
hallow, vertically elongate concavity that receives the head of the humerus.
mandibular fossa
forms the anterior boundary of fossa and helps maintain the maindible in position
articular eminence
cushions and lubricates joint that works in a hinge-action movement
meniscus
chewing
mastication
fan shaped muscle on each side of skull, elevates and lowers the jaw and can draw the mandible backwards
temporal muscle
muscle that closes the mouth (principle mastication muscle
masseter muscle
muscle that raises the mandible to close the jaw
internal pterygoid muscle
muscle that opens the jaw and thrusts the mandible forward; assists with lateral movement
external pterygoid muscle
kissing muscle; circular muscle surrounding the mouth that compacts and protrudes the lips
orbicularis oris muscle
principal cheek muscle, compresses the cheek, expelling air through lips
buccinator muscle
muscle of the chin (mental) that moves the chin tissue and raises/lowers the lower lip
mentalis muscle
fifth cranial nerve, motor and sensory
trigeminal nerve
trigeminal nerve branches at ____
Gasserian ganglion
smallest of division, sensory nerve with three branches
ophthalmic division
carries sensation from the lacrimal grand and eye conjunctiva, opthalmic division
lacrimal branch
carries sensation from the forehead, upper eyelid, scalp and nasal root, opthalmic division
frontal branch
carries sensation from the nose, eye and eyebrow, ophthalmic division
nasociliary branch
sensory division of trigeminal nerve, several branches
maxillary division
sensation from hard palate. periosteum, mucous membrane of molars/premolar teeth, maxillary division
anterior palatine branch
carries sensation from the soft palate (uvula), upper or soft part of palate, maxillary division
middle palatine branch
carries sensation from the tonsils and the soft palate, maxil;ary division
posterior palatine branch
carries sensation from nose and anterior area of palate, maxillary division
nasopalatine branch
anterior superior alveolar branchcarries sensation from the maxillary centrals, laterals and canines, infraorbital branch
anterior superior alveolar branch
carries sensation from the maxillary premolars and the mesiobuccal root of the maxillary first molar, infraorbital branch
middle superior alveolar branch
carries sensation from the maxillary second and third molar, and the remaining roots of the maxillary first molar, infraorbital branch
posterior superior alveolar branch
mixed nerve division that registers sensation and causes movement
mandibular division
carries sensation from the mandibular teeth and mucosa of the mouth floor and some tongue areas, mandibular division
inferior alveolar branch
carries sensation from skin of chin and the lower lip, mandibular division
mental branch
carries sensation from the anterior teeth and alveoli, chin and lip areas, mandibular division
incisive branch
carries sensation from the buccal gingiva and mucosa of the molar region, mandibular division
buccal branch
carries some sensation from the tongue and causes some movement of the tongue and mastication muscles, thereby the classification of the trigeminal nerve is mixed, mandibular division
lingual branch
rises from the aorta right and left, divides in the neck to form two arteries
carotid artery
carotid artery that provides blood supply to brain and eyes
internal carotid artery
carotid artery that provides blood to the throat, face, mouth, tongue and ears through branches
external carotid artery
provides blood to the maxillary anterior teeth and surrounding tissues, external carotid branch
infraorbital branch
provides blood to the maxillary teeth, periodontal ligaments, muscles, sinus and palate, external carotid branch
inferior alveolar branch (lower alveolar process)
divides into branches to serve the tongue, tonsil, soft palate, throat and floor of the mouth, external carotid branch
facial branch
largest of the branches of the external carotid; provides blood to the maxillary teeth, periodontal ligaments, muscles, sinus and palate.
maxillary branch
carries blood from the head to the heart through two divisions
jugular vein
collects and drains blood from the brain, cranium, face and neck.
internal jugular vein
collects and drains blood through assorted branches
external jugular vein
carries blood from the face structures and mouth area, external jugular branch
facial division branch
carries blood from the maxillary region, external jugular branch
maxillary division branch
collects the blood supply from head, nasal cavity, teeth, palate and muscles, external jugular branch
pterygoid venus plexus branch
spit
expectorate
watery fluid in expectorate
serum
sticky slime secretion that forms mucus in expectorate
muscin
body produced proteins that digest food
enzymes
largest salivary gland, located near the ear, produces serus saliva that empties into mouth near maxillary second molar
parotid salivary gland
parotid salivary gland empties here
Stenson’s duct
a smaller gland located on the lower side of the the face that secretes mucin and serum fluids with enzymes; empties through the submandibular duct
submandibular salivary gland
small fleshy growths that contains submandibular duct openings
caruncles
smallest major salivary gland, situated in floor of mouth, secretes mucin through multiple ducts
sublingual salivary gland
vessels that transports lymph fluid of plasma, water and waste products
lymph
tiny vessels or tubes that carry lymph fluid
lymph capillaries
a mass of lymph cells forming a unit of lymphatic tissue that is named after the formation site
lymph node
lymph nodes located under the armpit
axillary lymph node
lymph nodes located in the neck
cervical lymph node
lymph nodes found in the groin area near the abdomen
inguinal lymph nodes
lymphatic tissue masses found in the posterior of the throat between the anterior and posterior fauces and on the back of the tongue. Act as filters and aid in the production of immune responses
tonsil
lymphatic tissue found in the nasopharynx area, pharyngeal tonsil
adenoid
lips
labia
upper lip
superior oris
lower lip
inferium oris
area at the corner of the mouth where the lips meet
labial commissure
area where the pink-red lip tissue meets facial skin
vermillion border
median groove in the center external surface of the upper lip
philtrum
triangular piece of tissue that attaches the tongue, lip and check to the oral membrane
frenum
two tissues that attaches the inside of the lip to mucous membrane in the anterior to oral cavity common site for surgical frenectomy to permit closure of the two central incisors gap caused by ______ that is too large of thick
labial frenum
one tissue that attaches to the lower side of the tongue to the floor membrane. Openings for the Wharton’s duct are found on each side of this frenum are found in caruncles.
lingual frenum
conditions that results from shortened lingual frenum, “tongue-tied”
ankyloglossia
attaches the inside of the cheek to the oral cavity in the maxillary first molar area
buccal frenum
tongue
glossa
swallowing
deglutition
a groove that divides the tongue’s top surface into two parts
median sulcus
taste bud
papillae
back surface
dorsal surface
largest v-shaped papillae (taste bud), tastes bitter
circumvallate
smallest, hair-like papillae covering entire dorsal aspect of tongue that doesnt sense taste
filiform
small, dark red papillae on the middle and anterior dorsal surface and along side of tongue, sense sweet, sour and salty tastes
fungiform
present on the posterior lateral borders of the tongue, can be seen if the tongue is grasped with gauze and extended, senses sour tastes
foliate
roof of mouth
palate
composed of palatine processes of the maxillae bones; covered with mucous membrane
hard palate
irregular folds or bumps on the surface
rugae
tissue growth that is situated at the anterior portion of the palate behind the maxillary centrals, site for infiltration injection of local anesthesia
incisive papilla
white streak in the middle of palate, “ridge”
palatine raphe
tissue structure hanging from the palate in the posterior of the oral cavity
uvula
open gum and tissue area between the teeth and the cheek
vestibule
constructed opening or passage leading from the mouth to the oral pharynx, bound by the soft palate, the base of tongue, and the palatine arches. considered two pillars of mucous membranes
fauces
anterior pillars (tongue and palate areas)
glossopalatine arch
posterior pillars, palatine tonsils lay between these pillars, pharynx and palate areas
pharyngopalatine fauces