Arrange the following in the order of reception and transmission of sound wave from the ear drum.Cochlear nerve, external auditory canal, ear drum, stapes, incus, malleus, cochlea.

What is the name of passage in outer ear which carries sound waves to the ear-drum?

The correct path followed by sound waves from external ear to inner ear is

Given below are some of the process which takes place in our ear when we are exposed to any sound. Arrange these in the correct order of sequence. (a)The eardrum vibrates the transmits the sound wave to the ear ossicles. (b) Vibration travel from oval window to the fluid of cochlea. (c) Ripples in the basilar membrane band the hair cell against the tectorial membrane (d) Generation of waves in the lymphs. (e ) sound waves are collected by the pinna. (f) generation of nerve impulse and transmission through auditory nerves to the brain

Read the following statements and find out the incorrect statements. a. Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear and the inner ear. b. The outer ear consists of the pinna and external auditory meatus (canal). c. The tympanic membrane (ear drum ) is composed of connective tissue covered with mucus membrane outside and with skin inside. d. The ear ossicles reduces the efficiency of transmission of sound waves to the inner ear. e. The pinna collects the vibrations in the air which produce sound.

Select the correct statement ? i. The ears perform two sensory functions, hearing and maintenance of body balance ii. The ear ossicles increases the efficiency of transmissions of sound waves to the inner ear iii. The Eustachian tube helps in equalising the pressure on either sides of the ear drum iv. The fluid-filled inner ear called labyrinth v. The membranous labyrinth is filled with a fluid called perilymph vi. The coiled portion of the labyrinth is called cochlea

The following level of sound may damage ear drum and can umpire the hearing ability permanently

Arrange the following steps in a sequential order to verify the laws of reflection. (A) A hard , smooth surface (AB) is mounted vertically over a horizontal board on which two tubes P and Q , point towards the surface AB. (B) The tube Q is adjusted such that the listener would be able to hear the ticking sound clearly at the end away from AB. (C) The sound waves from a source , like ticking clock are directed to the surface AB through the pipe P inclined at an angle to AB . (D) By measuring the angles the tubes make with the surface AB , the laws of reflection are verified .