Exam #2 - Anatomy

Front 1

otitis media

Back 1

infection of the middle ear, can lead to mastoiditis

Front 2

Four regions of temporal bone

Back 2

Petrous - internal auditory canaal (internal acoustic meatus), carotid canal, jugular foramen
Mastoid - mastoid process
Squamous - zygomatic process, mandibular fossa, tempromandibular joint
Tympanic - external auditory canal (external acoustic meatus), styloid process

Front 3

Occipital bone

Back 3

occipital condyles, superior nuchal line, inferior nuchal line

Front 4

Sphenoid bone (bridging bone)

Back 4

sphenoidal sinuses (drain into nasal cavity), sella turcica (houses part of pituitary gland)

Front 5

optic foramen

Back 5

allows passage of ptic nerve

Front 6

foramen rotundum

Back 6

allows passage of one to the three branches of the "trigeminal nerve" (cranial nerve) that conveys sensations from teeth and gums. Dentists use "second division nerve block to desensitize one side of maxilla

Front 7

foramen ovale

Back 7

allows passage of a branch of a cranial nerve

Front 8

foramen spinosum

Back 8

small opening for meningeal blood vessels

Front 9

superior orbital fissure

Back 9

allows passage of several cranial nerves

Front 10

foramen lacerum

Back 10

between petrous, sphenoid, and occipital. Closed off by connective tissue in living people.

Front 11

ethmoid bone

Back 11

ehtmoidal sinuses drain into nasal cavity. crista galli, cribiform plate, perpendicular plate, superior and middle nasal conchae.

Front 12

cleft palate

Back 12

when two palatine processes do not join in prenatal development; may or may not be accompanied by cleft lip (hare lip)

Front 13

crepitus

Back 13

crackling sound caused by escape of air under skin

Front 14

blowout fracture

Back 14

blow to eye and orbit may fracture floor of orbit causing eye or muscles that move eye to drop down intot he maxillary sinus

Front 15

roof of nasal complex

Back 15

nasal bones, both cribiform plates of ethmoid, parts of frontal and sphenoid bones.

Front 16

floor of nasal complex

Back 16

palantine processes of maxillae and horizontal plates of palatine bones

Front 17

walls of nasal complex

Back 17

ethmoid bone, maxillae, inferior nasal conchae, palatine bones, and lacrimal bones

Front 18

tempromandibular joint

Back 18

articulation of mandibular conndyle and mandibular fossa

Front 19

nasal septum of nasal complex

Back 19

perpendicular plate of ethmoid, vomer

Front 20

paranasal sinuses

Back 20

ethmoidal, frontal, sphenoidal, maxillary. lined with mucus and cilia

Front 21

roof of orbital complex

Back 21

frontal bone and a wing of sphenoid bone

Front 22

floor of orbital complex

Back 22

maxilla, zygomatic bone, ethmoid bone

Front 23

lateral wall of orbital complex

Back 23

zygomatic bone, a wing of sphenoid, frontal

Front 24

posterior wall of orbital complex

Back 24

sphenoid bone

Front 25

fontanels

Back 25

six large membranous areas of skull that provide spaces between developing bones.
Dehydration leads to sunken fontanels.
Meningitis and increased intracranial pressure may lead to bulging fontanels

Front 26

coronal sutures

Back 26

coronal (20-30), then sagittal, then lambdoidal (40), then maybe squamosal (60)