Skull Week 1 Day 3

Front 1

where are the organs of hearing and equilibrium found

Back 1

petrous portion of the temporal bone

Front 2

three divisions of the ear

Back 2

external, middle, internal

Front 3

beginning of the external ear

Back 3

auricle or pinna (top of ear flap)

Front 4

small, liplike structure located anterior to the EAM. partial shield to the ear opening

Back 4

tragus

Front 5

opening and canal of the external ear

Back 5

EAM- external acoustic meatus

Front 6

posterior and inferior to the EAM

Back 6

mastoid process of the temporal bone

Front 7

inferior and slightly anterior

Back 7

styloid process of temporal bone

Front 8

part of the middle ear, even though it serves as a partition between the external and middle ears

Back 8

tympanic membrane

Front 9

the tympanic cavity communicates with the nasopharynx by way of the _______

Back 9

eustachian tube, or auditory tube

Front 10

what projection best demonstrates the tubelike internal acoustic canal

Back 10

axiolateral oblique (stenvers method)

Front 11

pathway for encephalitis

Back 11

mastoid air cells - antrum - aditus - tympanic cavity - eustachian tube

Front 12

infection of the brain that begins in the mastoid

Back 12

encephalitis

Front 13

disruptions in the continuity of bones of the skull

Back 13

skull fracture

Front 14

fracture that may appear as jagged or irregular lucent lines

Back 14

linear fracture

Front 15

fragment of bone is serparated and depressed into the cranial cavity

Back 15

depressed fracture

Front 16

ping-pong fracture

Back 16

depressed fracture

Front 17

view to see how far in fragments of bone go into skull

Back 17

tangential (if CT not available)

Front 18

what position places the sella turcica in perfect profile

Back 18

true lateral

Front 19

fractures through the dense inner structures of the temporal bone

Back 19

basal skull fracture

Front 20

easily recognizable because of the lead/metal constrast difference to anatomy

Back 20

gunshot wound

Front 21

body of sphenoid

Back 21

sphenoid sinus

Front 22

malignant ________ are spread to distant sites by the circulatory and/or lymphatic systems

Back 22

neoplasms of the skull

Front 23

destructive lesions with irregular margins

Back 23

osteolytic

Front 24

bony lesions of increased density

Back 24

osteoblastic

Front 25

moth-eaten appearance of bone

Back 25

osteolytic and osteoblastic

Front 26

one or more bone tumors that originate in bone marrow

Back 26

multiple myeloma

Front 27

pituitary gland tumors

Back 27

pituitary adenomas

Front 28

begins with bony destruction followed by bony repair

Back 28

paget's disease

Front 29

ostetitis deformas

Back 29

paget's disease

Front 30

cottonwool appearance with irregular areas of increased density

Back 30

paget's disease

Front 31

bacteria infection of the mastoid process that can destroy the inner part of the mastoid process

Back 31

mastoiditis

Front 32

air cells are replaced with fluid-filled abscess, which can lead to hearing loss

Back 32

mastoiditis

Front 33

hereditary disease involving excessive spongy bone formation of the middle and inner ear

Back 33

otosclerosis

Front 34

most common cause of hearing loss in adults without eardrum damage

Back 34

otosclerosis