Fuids must be stirred to stimulahe hearing receptors, whereas gross movements of

Question

Fuids must be stirred to stimulahe hearing receptors, whereas gross movements of the head disturb fluids surrounding the balance organs. Receptors that respo uch physical forces are called mechanoreceptors Part A Outer, Middle, and Inner Ear Functions Anatomically, the ear is divided into three major aroas: the extemal, or outer, ear, the middle ear, and the internal, or inner,oar Drag and drop each section of the ear to the bin of the function each is involved in. Midde ear Outer ear Inner ear Both Hearing and Equilibrium My Answers Give p MacBook Air 20 p 5 command

Explanation / Answer

Structures: pinna, external auditory canal and tympanic membrane or ear drum

Here the function of pinna and external auditory canal is to transmit the sound waves to the middle ear via vibrating the tympanic membrane which amplify sound waves.

Function of the outer ear: Hearing

Structures: 3 ear ossicles - Malleus, Incus and Stapes. Its also have opening for eustachian tube. Oval window and Round Window

Here on the inner portion of the eardrum which have attachment with the malleus, on another side Malleus attaches with the Incus, and Incus attaches with the Stapes. Stapes comes in conatct with the round window. The parts of the middle ear in series:

Ear drum - Malleus - Incus - Stapes - Oval window

So it transmit amplifiied sound waves from ear drum to the inner ear through oval window.

The eustachian tube connects middle ear cavity with the nasopharynx, which removes mucus from the middle ear and maintain atmosphearic pressure.

Function of the middle ear: Hearing

Structures: Cochlea, Vestibule and Semicircular Canals

when sound waves strikes the oval window, which is in contact with cochlea. Cochlea contains fluid, so here sound waves produce vibrations in the fluid of the Cochles. Cochlea have air cells- a sensory receptor becomes stimulated and via Cochler part of vestibulo cochlear nerve the signels reaches to the brain. It helps in hearing.

There are 3 semicircular canals which are filled with fluids. with the rotation and movement of the head, this fluid moves and according to this the signals goes to the brain via vestibuler part of the vestibulo- cochlear nerve. It helps in mainting equilibrium.

Function of the inner ear: Hearing and Equilibrium

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