Name the following :
(i) The part into which the sound waves are directed by the ear pinna.
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(ii) The kind of balance with which the semi-circular canals are concerned.
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(iii) Any two sensations felt through free nerve endings in the skin.
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Answer:
may beoption 3 is correct
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(i) The part into which the sound waves are directed by the ear pinna: Tympanic Membrane
(ii) The kind of balance with which the semicircular canals are concerned: Dynamic Equilibrium
(iii) Any two sensations felt through the free nerve endings in the skin: Pain and Heat
Explanation:
- Ears are the sense organs that help animals 'to pick up sound waves' and hear. The sound from an external source is heard through the pinna and then the sound transfers to the eardrums, and the vibrations move the inner ear and the neuro signal 'is sent to the brain'.
- Balance is also ensured through the bones of the inner ears. The nerve endings are freely left beneath the skin and this is the reason which enables us to experience intense sensations of pain, cold, heat and others.
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