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BIOSC-101 Lecture Notes - Lecture 21: Tectorial Membrane, Bony Labyrinth, Semicircular Canals

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coppermule660
14 Sep 2020
School
Diablo Valley College
Department
Biological Science
Course
BIOSC-101
Professor
fox

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Document Summary

Needed to transfer vibrations to fluid of inner ear. Occurs when eardrums are larger than oval window; so pressure is concentrated. Responds to pressure waves caused by sound waves. List the labyrinths and the fluid and structures that can be found in each. Utricle: senses forward tilting of the head. Semicircular canals: helps with balance when not moving. Cochlea: hearing; spiral organ that has openings called oval and round window. List the steps for the pathway of sound. Compare and contrast conductive hearing loss to sensorineural hearing loss. Conductive hearing loss: sound doesn"t reach inner ear or is diminished by: Obstruction of ear canal (external auditory meatus) Damage to tympanic membrane or auditory ossicles. Sensorineural hearing loss: sounds get to inner ear but brain doesn"t receive input. Part of brain involved in hearing perception. External ear infection: infection in external auditory canal. Caused by water trapped in the canal swimmers ear .

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Related Questions

The ____________ ear consists of the ____________ that funnels sound waves, the external acoustic meatus, and the ____________ that vibrates like a drum when sound waves hit.

The ____________ ear consists of the air-filled chamber, called the ____________ , and ossicles called the ____________ that transmit sound vibrations to the oval window.

The ____________ , also called the pharyngotympanic tube, connects the middle ear to the pharynx to equalize the ____________ in the outer and middle ear.

The organ of equilibrium is the ____________ , and the organ of hearing is called the ____________ , which is a coiled snail-like tube; this structure converts sound waves to nerve impulses.

The inner ear also consists of tubes called the ____________ labyrinth that lines the bony labyrinth and is filled with ____________ , a similar fluid to intracellular fluid; the fluids are important in transmitting sound waves.