robbypowell's version from 2015-10-28 14:07


Question Answer
definition: Plate of elastic cartilage, covered with skinAURICLE
The outer third of External Auditory Meatus is ____ while the inner 2/3's is made up of ____Cartilage; Bone
The lining of the inner 2/3's of the External Auditory Meatus is what type of tissue?KERATINIZED Stratified Squamos (epithelium)
What 2 type of glands are found within the external auditory meatus submucosa?Sebaceous (normal skin) & Ceruminous (specialized glands... here earwax)
What are the 3 layers of the tympanic membrane from outer to inner?Epidermis (outer); Elasitc Connective Tissue; Simple Cuboidal (inner)
The tympanic membrane is directly attached to what Middle Ear bone?Malleus (the Mallet that strikes the anvil)
The Middle Ear communicates with the Pharynx via the __________ tubeEustachian
The Middle Ear communicates with the _______ via the Eustachian tubePharynx
What are the three Ossicles of the Middle Ear?Malleus, Incus, Stapes (that is the order of their interaction too, remember them in this order) (MIS)
What ossicle of the inner ear interacts with the Oval Window of the inner ear?Stapes (last of the three sequentially)
What type of tissue lines the ossicles of the Middle Ear?Simple Squamos Epith
The Middle Ear cavity is lined with what type of tissue?Simple CUBOIDAL Epith
The Middle Ear cavity is lined with simple cuboidal tissue... is there any submucosa?NO (just bone)
The Auditory tube, or Eustachian tube (canal) is lined with what type of tissue?Pseudostratified Columnar (for sweeping and clearing)
What are the two windows of the inner ear? Which interacts with the Ossicles?Oval & Round; Oval interacts with Stapes
Muscles insert into which two ossicles and act as "sound guards"?Malleus and Stapes
Which muscle interacts with Stapes and guards against the sound of one's own voice?Stapedius
Which muscle interacts with Malleus and "guards against the sound of chewing"?Tensor Tympani
The _____ ______, a cavity within the temporal bone, houses a fluidfilled membranous labyrinth.Bony Labyrinth
Two components (major divisions) of the Inner Ear are the ____ & ____ labyrinthsBony & Membraneous
The ____ organs (saccule, utricle, & semicircular ducts) are in the _____ labyrinth (inner ear) and sense equilibrium (balance)Vestibular; Membraneous
What are the three Vestibular organs of the Inner ear?Saccule, Utricle & Semicircular Ducts
The Membraneous Labyrinth has Vestibular organs for sensing ____ and Cochlea for ____Equilibrium (balance); Hearing (auditory sensation)
What do vestibular organs sense?Equilibrium
What do Cochlea sense?Sound (hearing, mechanical sensation)
____ labyrinth HOUSES a ______ labyrinthBONY houses MEMBRANEOUS
The VESTIBULE houses what two Vestibular organs?Sacule & Utricle
How many semicircular canals are there in each ear?3
What fills the inner ear space?Peri-lymph (fluid)
What fills the cochlear duct?ENDO-Lymph (High K, low everything else)
Some regions (floor of the saccule and lateral wall of utricle) show structures called ____, innervated by CN VIIIMaculae
The ______ is composed of two types of receptor cells (hair cells) in between supporting cells.Macula
Sacule and Utricle, wall is a thin ___ ___ membrane and Lumen (inner space) is lined with ____ ____ epitheliumConnective Tissue (wall); Simple Squamos (lumen)
Thick Gelatinous Glycoprotein layer (produced by supporting cells) covering the Neuroepithelium of Maculae (inner ear, vestibular)Otolithic "membrane"
Calcium carbonate crystals found in glycoprotein layer covering maculaeOtoliths (or Otoconia)
Maculae are sensitive to ____ acceleration due to their sensory structure and the properties of the surrounding "membrane"LINEAR
Maculae are innervated by the ____ branch of which Cranial Nerve?Vestibular Branch (equilibrium); CN 8 (Vestibulocochlear)
Macular Hair cell with ____-cilia, which contain bundled actin, and a longer single ___-cilium, a modified cilium whose tip may be slightly enlargedStereocilia; Kinocilium (stereo is plural) (only one person can win Keno)
Each semicircular duct has an expanded end called the ampulla. The wall of each ampulla is raised as a ridge called the ____ _____Crista Ampullaris
Each semicircular duct has an expanded end called the _____Ampulla
Maculae are associated with what Vestibular Organs?Sacule & Utricle
Cupula are associated with what Vestibular Organs?Semicircular Canals
Macula sense what type of acceleration?Linera
Cupula sense what type of acceleration?Angular (circular, rotational)
spiral pathway of the cochlea is ___ mm long35 mm
cochlea is divided into three canals: Scala ____ (above), Scala ____ (cochlear duct), & Scala ____ (inferior)Vestibuli; Media; Tympani
Scala Media contains ____ while Scala Vestibuli & Tympani contain _____Endo-lymph; Peri-lymph
Which two canals of cochlea are really one long tube?Scala Vestibuli & Tympani
The cochlear duct is which of the three cochlear canals?Scala Media
The cochlear duct is lined with _____ membraneReissner's membrane
Reissner's membrane is the lining for what?Cochlear duct
Reissner's membrane is two layers of ___ epitheliumSquamos
What is the source of the Endolymph in Scala Media?Stria Vascularis (lateral wall of cochlear duct)
Where is the Organ of Corti?in the floor of the Cochlear Duct
What is the "specialized auditory epithelium"?Organ of Corti
What specialized structure's Hair cells show steriocilia (microvilli) of increasing height and no cilium. The steriocilia are embedded into the tectorial membraneOrgan of Corti (auditory sensation)
In the Organ of Corti, Shearing of the ______ against the ________ membrane causes the action potential that we perceive as soundStereocilia; Tectorial membrane
The organ of Corti is filled with ____ while the adjacent canals are filled with ____Endolymph; Perilymph
What are the supporting cells (for sensory cells) of Organ of CortiPillar cells & Phalangeal cells (pillars and phalanges)
What area produces endolymph and has a unique association of epithelial cells and the capillaries in the periosteum of the boneStria Vascularis
The _____ membrane separates perilymph in the scala vestibuli from endolymph in the cochlear ductVESTIBULAR