Flashcards
Sensory organs - Ear
Cards in this deck (32)
- 1What are the 2 components of the external ear?1. Auricle
2. External acoustic meatus - 2External ear: has a ___ core; supported by muscles and can be turned to trap ___ ___Cartilage; sound wave
- 3What 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) - 4Tympanic cavity musclesStapedius and Tensor tympani
- 5What are the 2 main components of the internal ear?1. Bony labyrinth
2. Membranous labyrinth - 6Tympanic cavity: auditory tube - connects the ___ ___ with the nasopharynx - __ ___ epithelium - contain ___ cellsMiddle ear;
Pseudostratified columnar;
Goblet - 7Is perilymph associated with the bony labyrinth or the membranous labyrinth?Bony labyrinth
- 8Is endolymph associated with the bony labyrinth or the membranous labyrinth?Membranous labyrinth
- 9What are the 2 main components of the bony labyrinth?1. The cochlear
2. The semicircular canals - 10What are the 4 main components of the membranous labyrinth?1. Cochlear duct
2. Semicircular ducts
3. Utricle
4. Saccule - 11What 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) - 12What are the 3 semicircular canals of the bony labyrinth?1. Anterior
2. Posterior
3. Lateral - 13Connects the cochlear to the semicircular canalsVestibule
- 14Spiral tunnel around the central axis of spongy bone called modiolusCochlear
- 15What are the parts of the cochlear?Scala tympani (ST). scala vestibuli (SV), and helicotrema
- 16___ fills the space between the periosteum and membranous labyrinthPerilymph
- 17___ ___ produces endolymphstria vascularis
- 18what are the 4 walls/membranes of the cochlear duct?vestibular membrane, basilar membrane, stria vascularis, and tectorial membrane
- 19What are the 3 main cells of the cochlear duct?Hair cells, supporting cells, and spiral ganglion
- 20Besides creating endolymph, what is the other function of the stria vascularis?regulate ion content
- 21What are the 3 epithelial cell types found within the stria vascularismarginal cells, intermediate cells (contain melanin), and basal cells
- 22this organ is also called the Organ of Cortispiral organ
- 23what are the 3 major components of the spiral organ?sensory cells, supportive structure and cells, and cochlear branch of the vestibulocochlear nerve
- 24the sensory hair cells are arranged in 2 rows: the cylindrical ___ ___ cells and the pear shaped ___ ___ cellsouter hair; inner hair
- 25gelatinous structure whose lower part of the membrane rests on the tip of the tallest stereocilia of the outer hair cellstectoral membrane
- 26bipolar neurons that project into inner hair cellsspiral ganglion
- 27the vestibular apparatus contains the ___ ___ which are housed in the semicircular canals and the ____ and ___ which are housed in 2 depressions of the vestibulesemicircular ducts; utricle; saccule
- 28the enlarged portion of the semicircular ducts is the ___ampulla
- 29the vestibular apparatus contains what 3 organs of equilibrium?Crista ampullaris, macula utriculi, and macula sacculi
- 30sensory hair cells of the crista ampullaris project into the gelatinous ___cupula
- 31cupula has embedded Ca++ crystals called ___ololiths
- 32in utricle and saccule, the ___ is the midlinestriola
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- User has deleted their subject information Flashcards on Sensory organs - Ear, created by Deleted user on 07/10/2020.
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- Deleted user · Oct 2020
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- Oct 7, 2020
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- Created by Diamond Sapphire · Oct 6, 2020
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