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Bones of Cranium and Face
Skull bones
30
Anatomy
Not Applicable
10/09/2011

Additional Anatomy Flashcards

 


 

Cards

Term
Functions of Bone
Definition

Framework for body

 

muscle attachment (skeletal muscles)

 

Protection (skull and rib cage)

 

Formative (produces blood cells

 

Repository (stores minerals, calcium

Term
Important functions of Skull
Definition

Protects brain

 

facial features

 

dentition support

 

special sensory organ support

Term

Bones of the skull

 

2 groups

Definition

neurocranium (8)

 

surrounds brain

 

viscerocranium (14)

 

all others

 

6 bones unpaired and 8 paired=22 bones

Term
suture
Definition

where 2 fixed bones meet

 

fibrous joint

Term
fontanels
Definition
membrane between cranial bones (soft spot)
Term
process
Definition
projection or outgrowth
Term
Fossa
Definition
depression (usually smooth)
Term
Groove
Definition
narrow elongated depression
Term
foramen
Definition

opening or perforation

 

(usually leads to canal or meatus)

Term
canal or meatus
Definition
passageway
Term
3 sutures
Definition

Coronal- frontal and parietal

 

Sagittal- parietals

 

Lambdoidal-parietals and occipital

Term

Frontal bone

 

 

Definition

single

 

glabella- bump over nose

 

frontal sinus- lighten skull, hallowed out space

Term
Parietal bones
Definition

paired

 

2 bones on side of skull

Term
Occipital bone
Definition

single

 

most posterior bone of skull

 

foramen magnum- spinal cord

 

occipital condyles- articulated with the atlas (c1) and axis (c2) for rotation

Term
Temporal bones
Definition

paired

 

3 divisions: squamous (part of temporal fossa), petrous (behind ear), tympanic

 

consists of:

 

mastoid process- petrous portion

zygomatic process- where you put blush

styloid process- attachment for muscles

 

external auditory meatus- ear canal

mandibular fossa- articulates w/ condyle of mandible

stylomastiod foramen- between styloid process and mastoid process

Term
Sphenoid bone
Definition

single

 

greater wings- side of skull

lesser wings- small wings

sphenoid sinuses- located in sphenoid bone

sella turcica- hypophysial fossa (pituitary sits here)

 

foramina-short, windowlike opening

ovale- carries nerves to oral cavity (impt. for RDH's)

rotundum- impt. for RDH's

Spinosum

optic canal- 2nd cranial nerve

superior orbital fissure-between greater lesser wings

carotid canal- internal carotid artery

 

pterygoid processes:

internal medial pterygoid plates (pterygoid hamulus)

external lateral pterygoid plates

pterygoid fossa- between the lateral & medial plates

 

Term
Ethmoid bone
Definition

single

 

cribriform plate- olfactory nerves (I)

 

crista galli- spinal process (dura matter attaches to it)

 

perpendicular plate- straight done middle of nose

 

ethmoid sinuses

 

conchae- the terminates

superior and middle nasal conchae

 

no inferior

Term
Vomer
Definition

single

 

perp. plate from nasal septum

 

articulates with maxilla

Term
Inferior nasal conchae
Definition

paired

 

project away from walls of nasal cavity

Term
nasal bones
Definition

paired

 

form bridge of nose

Term
lacrimal bones
Definition

paired

 

form wall of orbit

Term
zygomatic bones
Definition

forms cheek bones

 

temporal process- extends toward temporal bone

 

frontal process- extends toward frontal bone

 

maxillary process- extends toward maxilla

Term
Palatine bones
Definition

paired R&L

 

horizontal plate- form palate

 

vertical plate- contain the foramen

 

greater and anterior palatine foramen- nerves (anesthesia)

 

lesser or posterior palatine foramen

Term
Maxillary bones
Definition

paired

 

maxillary sinus

 

alveolar process- holds teeth

 

palatine process- median palatine suture

 

maxillary tuberosity- elevated on posterior aspect of maxilla

 

frontal process- goes toward frontal bone

 

zygomatic proces- goes toward zygomatic

 

canine eminence-facial ridge of bone over maxill. canine

 

canine fossa- behind roots of canines

 

foramina:

nasopalatine-under incisive papilla

infraorbital- under eye

posterior superior alveolar foramen

Term
Mandible
Definition

single

 

ramus- plate of mandible that extends superiorly from body of mandible

 

angle- at intersections of the posterior and inferior borders of ramus

 

body- horizontal portion of mandible

 

condylar process-articulates w/ mandibular fossa

 

coronoid process

 

coronoid notch- where thumb sits when giving injection

 

mandibular notch- mandible between condyle and coronoid process

 

mental foramen- between premolars

 

alveolar process

 

lingula- ligament attaches

 

mental protuberance- bony prominence of chin

 

genial tubercles- midline bony projections or up on inner aspect of mandible

 

submandibular fossa- sublingual salivary gland

 

external oblique line- crest on lateral side of mandible where ramus meets joint

 

internal oblique line

 

mylohyoid line- muscle for floor of mouth attaches here

Term

Hyoid bone

 

not a bone of the skull

Definition

serves as a muscle attachment apparatus for suprahyoid and infrahyoid muscles

 

plays a part in function on mandible

Term
Paranasal sinuses
Definition

function: lighten bones

 

 

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