Biology
State the functions of the following :-
(i) Semi-circular canals
(ii) Cochlea
(iii) Auditory nerve
Sense Organs
ICSE
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Answer
(i) Semi-circular canals
- Dynamic Equilibrium
- Detects head rotation
(ii) Cochlea
- Contains organ of corti which plays role in hearing.
- Converts sound vibrations into electrical signals and transmits it to the brain via the auditory nerve.
(iii) Auditory nerve
- Transmits auditory signals from ear to brain.
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Related Questions
Given below is a diagrammatic representation of a part of the human ear.
(i) Name the parts numbered 1-6.
(ii) Which parts of the ear shown here are complete.
Categorise the following parts under
(i) external (ii) middle (iii) internal ear.
Ear drum, hammer, pinna, cochlea, anvil, stirrup, eustachian tube, tympanum, oval window, semi-circular canals.
Mention if the following statements are true (T) or false (F) :
(i) Human ear is concerned with hearing only.
(iii) Pinna concentrates and directs sound waves towards tympanum.