oral anatomy ch. 3

113 cards·by jenaec0123

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bones

mineralized structures protecting the internal soft tissues

process

general term for any prominence on a bony surface

condyle

an oval prominence usually involved in joints

epicondyle

a small prominence located superior to or upon a condyle

a head

a rounded structure projecting from a bony surface by a neck

tuberosity

large. often sought prominence on a bony surface

arch

prominence shaped like a bridge with a bowline outline

cornu

small hornlike prominence

tubercle/eminence

small rounded elevation on a bony surface

crest

prominent, often roughened border or ridge on a bony surface

line

small straight ridge

spine

abrupt small prominence of a bone that may be a blunt or sharply pointed projection

incisura/notch

indentation at the edge of a bone

sulcus

shallow depression or groove that usually marks the course of blood vessels or nerves

fossa

deeper depression or concavity on a bony surface

plate

area on a bony surface that is neither a prominence nor a depression

foramen

short window like opening in a bone

canal

longer narrow tubelike opening in a bone

meatus

a type of canal

fissure

narrow cleftlike opening

ostium

smaller opening, especially as an entrance into a hollow organ or canal

aperture

narrow opening

articulation

area of the skeleton where the bones are joined to each other

joint

site of a junction or union between two or more bones

suture

union of bones joined by fibrous tissue that appears on the dry skull as a jagged line

neurocranium

cranial bones

viscerocranium

facial bones

how many bones does the skull have

anterior fontanelle

soft spot on babies

what do orbital walls insist of

frontal bone, ethmoid bone, lacrimal bone, zygomatic bone

articulation

skeletal area where bones join together

sutures

union of bones with fibrous tissue

what do bones serve as

the base for palpation of soft tissues

bones of the nerocranium

8 bones- frontal, 2 parietal, occipital, 2 temporal, sphenoid, ethmoid

coronal

frontal and parietal bones

sagittal

parietal bones

lambdoidal

occipital and parietal bones

squamosal

temporal and parietal

bones of viserocranium

14- mandible, vomer, 2 maxilla, 2 lacrimal, 2 zygoma, 2 nasal, 2 palatine, 2 inferior nasal conchae

temporozygomatic suture

temporal and zygomatic bones

median palatine

palatine bones

transverse palatine suture

maxilla and palatine bones

intermaxillary suture

joined maxilla

What is the orbit comprised of

frontal, ethmoid and lacrimal bones, zygomatic and sphenoid bones, maxilla, sphenoid

cranial nerves

III, IV, V, VI

ophthalmic vein (superior)

drains muscles of extra-ocular movement

location of cranial nerves

between the greater and lesser wings of the sphenoid

nerves of inferior orbit

branches of V(2), infraorbital and zygomatic nerves

location of inferior orbital fissure

between the greater wing of sphenoid and maxilla

Nerves in Optic canal

Cranial Nerve II

What is the Superior Orbital Fissure comprised of

Cranial nerves III, IV, V, VI and the opthalmic Vein

a shallow depression in a bone is known as what

a fossa

The portion of the maxilla and mandibular bone that forms the sockets for the sockets for the teeth is unknown as what?

alveolar process

Which bones form the hard palate

the palatal process of the maxilla and the palatine bones

Where is the largest of the paranasal sinuses?

body of the maxilla

What is the area called immediately behind the maxillary third molars

maxillary tuberosity

What are the 3 divisions of the mandible

the body of the mandible, rams and alveolar process

What bones make up the rim of the orbit

maxilla, frontaal, sphenoid, ethmoid, lacrimal

What is the area immediately behind the mandibular third molars called

retromolar triangle

What is the foramen located about midway up the medial side of the ramus?

mandibular foramen

What is the bony ridge that runs from the mandibular foramen down and forward on the internal surface of the mandible called

mylohyod ridge

at midline on the internal surface of the mandible are small bony projections, What are these called?

genial tebercles

What is the small bony projection that partially covers the mandibular foramen called?

linguia

What bones form the nasal septum?

the ethmoid and vomer bones

In which bone would you find the external auditory meatus

temporal bones

In addition to the zygomatic bone, which of the following bones has a process that forms the zygomatic arch?

temporal bone

Lambodial suture is formed by

occipital and parietal bones

Foramen ovale transmits what nerve?

Foramen rotundamente transmits what nerve?

A short opening in a bone is known as what?

foramen

A long tubelike opening in a bone is called what?

a canal

The joining together of two or more bones is known as what?

suture

The suture located between the 2 parietal bones is called what?

sagittal suture

In the middle of the inferior surface of the occipital bone is a large opening through which the spinal cord passes. What is this opening?

answer

The piriform aperture (nasal cavity) is formed primarily by what bones?

nasal and maxillary

What part of the mandible articulates with the mandibular fossa to form the TMJ

condyle

The foramen on the external part of the mandible located near the apex of the 2nd premolar is

mental foramen

Which bone is refers to as the "floating bone"

hyoid bone

Which of the facial bones is not paired?

vomer and mandible

What suture is located between the frontal and parietal bones?

coronal suture

How many bones form the skull

22, 8 neurocranium and 14 viserocranium

What are the two types of head and neck bones?

neurocranium and viserocranium

nerves that go through the inferior orbital fissure

infraorbital and zygomatic nerves, ifraorbital artery and inferior ophthalmic vein

what are the branches of V2

infraorbital and zygomatic nerves

What does the infraorbital foramen transmit?

infraorbital nerve (direct continuation of V2)

Piriform aperturebony rim of nasal cavity

answer

What is your nasal septum composed of?

ethmoid, vomer and nasal septum cartilage

What does the temporal bone articulate with

Parietal, sphenoid and occipital bones

what does the zygoma articulate with

frontal, maxillary, sphenoid and temporal bones

What does the incisive foramen transmit

nasopalatine nerve

what does the greater palatine foramen transmit

greater palatine nerve

what does the lesser palatine foramen transmit

lesser palatine nerve

What are pterygoid processes

large inferior projections

what is the function of pterygoid processes

attachment for muscles

what is a pterygoid fossa

depression between the plates

what is the hamulus

most inferior extension of the medial pterygoid plate

What does the ethmoid bone consist of

crista galli and cribriform plate

what is a cockscomb

attachment site for tissues

What does the cribriform plate transmit?

fibers of cranial nerve 1

What does the sphenoid bone consist of

Sella turcica, greater wings, and lesser wings

what does the sella turcica house?

the pituitary gland

What does the foramen oval transmit?

What does the foramen rotunda transmit

What does the optic canal transmit

Nerve II

What does the foramen spinosum transmit

Meningeal artery

What does the stylomastoid foramen transmit

VII

What does the hypoglossal canal transmit

XII

What does the foramen magnum transmit

Spinal cord, vertebral arteries, XI

What does the Jugular foramen transmit

Internal jugular vein, IX, X, Xi

Where are the sinuses located

frontal, ethmoid, sphenoid or maxillary

What is the mandible comprised of

Aveolar process, body, and ramus

What is the mental protuberance of the mandible

chin

mylohyoid line

attachment for mylohyoid and creates two fossae