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29 Cards in this Set
- Front
- Back
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utricle and saccule
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detect had tilt & linear acceleration & deceleration
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semicircular canals
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Detect head rotation i all 3 planes
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Vestibular apparatus
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utricle, saccule, and semicircular canals
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Receptor cells have 3 common motifs:
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1. they are all hair cells
2.tips of hair-like processes are always embedded in gelatinous material. 3.cells are stimulated when there's relative movement |
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Utricle & Saccule contain what?
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Calcium Carbonate Crystals called otoliths which makes it heavier.
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Gelantinous Membranes
Cochlea Utricle, Saccule Semicircular canals |
Tectorial-cochlea
Utricle, Saccule-Otolithic Semicircular canals-Cupula |
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Pinna
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outer, funnel-like flap in external ear
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external auditory meatus
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S-shaped tube in external ear
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Tympanic membrane
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divides the entrance to the middle ear
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Membraneous coinger that separates the air filled middle ear from the liquid filled cochlea in the inner ear
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oval window
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2 small skeletal muscles are attached to the ossicles:
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1.Tensor tympani
2.stapedius |
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Functions of muscles that respond to sound waves
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1.Muscles contract making bridge more rigid
2.low frequency sounds in loud environments 3.muscles activated same as voice mechanism which decreases hearing sensitivity 4.maintain steady pull on eardrum |
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Connect air-filled cavity of middle ear wih pharynx. Equalizes pressure in middle ear.
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Eustachian tube
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Balance-sensing part of the inner ear.
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Vestibular apparatus
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The membranous labyrinth is composed of what?
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vestibular apparatus
semicircular canals ampulla utricule and saccule cochlear duct-scala media-cochlea |
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Sits on basilar membrane and detects sound waves in response to vibration of basilar membrane
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organ of corti
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The primary auditory cortex is located in what lobe?
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parietal
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Map representing different resonating regions of the cochlea and represents different sound frequencies
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tonotopic map
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Vestibular system has 2 functions:
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1.balance
2.stble eye position |
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What would come into affect in response to jumping & falling, moving up or down in an elevator?
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saccular macula
Utricle & saccule |
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Graveyard spiral
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endolymph keeps moving and the hair cells bend and signa that they are moving in the opposite direction.
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Gravity has no effect on the Cupula
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lacks otoliths that would make it heavier than endolymph
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Person running forward in straight line and starts to turn to 1 side, this rotaton movement is detected by what?
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crista ampullaris
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Proprioceptors in joints of neck inform neurons in vestibular nuclear complex of the position of the head
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neck proprioceptors
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Information that tells us about the relative positions of other body parts
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Prioceptive
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Pressure sensations from the soles of the feet,
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exteroceptive
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movement of the body shifts the position of an image on the retina
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visual
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An involuntary muscle contraction that occurs in the middle ear of mammals in response to high-intensity sound stimuli.
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attenuation reflex
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"Heads up" illusion in the aircraft
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Utricle and saccule are important
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