Sensory organs - Ear

Descrição

VMED 5132 (Test 2) FlashCards sobre Sensory organs - Ear, criado por Diamond Sapphire em 06-10-2020.
Diamond Sapphire
FlashCards por Diamond Sapphire, atualizado more than 1 year ago
Diamond Sapphire
Criado por Diamond Sapphire aproximadamente 4 anos atrás
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Resumo de Recurso

Questão Responda
What are the 2 components of the external ear? 1. Auricle 2. External acoustic meatus
External ear: has a ___ core; supported by muscles and can be turned to trap ___ ___ Cartilage; sound wave
What are the 3 components of the middle ear? 1. Tympanic cavity 2. Tympanic membrane 3. 3 ossicles and associated muscles and ligaments (malleus, incus, and stapes)
Tympanic cavity muscles Stapedius and Tensor tympani
What are the 2 main components of the internal ear? 1. Bony labyrinth 2. Membranous labyrinth
Tympanic cavity: auditory tube - connects the ___ ___ with the nasopharynx - __ ___ epithelium - contain ___ cells Middle ear; Pseudostratified columnar; Goblet
Is perilymph associated with the bony labyrinth or the membranous labyrinth? Bony labyrinth
Is endolymph associated with the bony labyrinth or the membranous labyrinth? Membranous labyrinth
What are the 2 main components of the bony labyrinth? 1. The cochlear 2. The semicircular canals
What are the 4 main components of the membranous labyrinth? 1. Cochlear duct 2. Semicircular ducts 3. Utricle 4. Saccule
What are the 3 main functions of the internal ear? 1. Sensory sound processing (cochlear) 2. Balance (semicircular duct) 3. Nerve supply is through the vestibulocochlear nerve (cranial nerve 8)
What are the 3 semicircular canals of the bony labyrinth? 1. Anterior 2. Posterior 3. Lateral
Connects the cochlear to the semicircular canals Vestibule
Spiral tunnel around the central axis of spongy bone called modiolus Cochlear
What are the parts of the cochlear? Scala tympani (ST). scala vestibuli (SV), and helicotrema
___ fills the space between the periosteum and membranous labyrinth Perilymph
___ ___ produces endolymph stria vascularis
what are the 4 walls/membranes of the cochlear duct? vestibular membrane, basilar membrane, stria vascularis, and tectorial membrane
What are the 3 main cells of the cochlear duct? Hair cells, supporting cells, and spiral ganglion
Besides creating endolymph, what is the other function of the stria vascularis? regulate ion content
What are the 3 epithelial cell types found within the stria vascularis marginal cells, intermediate cells (contain melanin), and basal cells
this organ is also called the Organ of Corti spiral organ
what are the 3 major components of the spiral organ? sensory cells, supportive structure and cells, and cochlear branch of the vestibulocochlear nerve
the sensory hair cells are arranged in 2 rows: the cylindrical ___ ___ cells and the pear shaped ___ ___ cells outer hair; inner hair
gelatinous structure whose lower part of the membrane rests on the tip of the tallest stereocilia of the outer hair cells tectoral membrane
bipolar neurons that project into inner hair cells spiral ganglion
the vestibular apparatus contains the ___ ___ which are housed in the semicircular canals and the ____ and ___ which are housed in 2 depressions of the vestibule semicircular ducts; utricle; saccule
the enlarged portion of the semicircular ducts is the ___ ampulla
the vestibular apparatus contains what 3 organs of equilibrium? Crista ampullaris, macula utriculi, and macula sacculi
sensory hair cells of the crista ampullaris project into the gelatinous ___ cupula
cupula has embedded Ca++ crystals called ___ ololiths
in utricle and saccule, the ___ is the midline striola

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