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प्रश्न
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
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उत्तर
(i) (a) Bone of skull
(b) Inner ear
(c) Eardrum
(d) Bone of skull
(e) Bone of middle ear
(f) Middle ear
(g) Air filled
(ii) (b) Inner ear - It transmits the impulse to brain.
(d) Bone of skull - It helps in fixing the position of the ears to help the brain use auditory cues to judge direction and distance of sounds.
(g) Air filled - It keeps the pressure in the middle ear equalized with pressure in the outside.
(iii) The main division of the ear are: outer ear, middle ear and inner ear.
(iv) Stirrup
(v) The labyrinth is the inner ear which consists of utriculus, sacculus, cochlea and three semicircular canals.
संबंधित प्रश्न
A fluid that occupies the larger cavity of the eye ball behind the lens is
___________.
Where is the Cochlea located? Briefly mention its function.
Name the part of the ear associated with dynamic balance.
Name the tube which connects the middle ear to throat.
Choose the correct answer :
Organ of corti is found in ___________
Describe the structure and function of the human ear?
Select the CORRECT match of part of the human ear and its function.
Assertion: Human beings Cannot hear infrasonic sounds.
Reason: Sound with a frequency less than 20 Hz is called infrasonic sound.
______ is the smallest bone in the human body.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Ear pinna : Auricle :: Inner ear : ______.
