Neural Control and Coordination — Bio Zoology STD 11 — Question
Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyNeural Control and Coordination5 Marks
Question
Write a short note on defects of ear?
✓
Answer
Deafness may be temporary or permanent. It can be further classified into conductive deafness and sensory-neural deafness. Possible causes for conductive deafness may be due to
Blockage of ear canal with earwax
Rupture of eardrum
Middle ear infection with fluid accumulation
Restriction of ossicular movement.
In sensory-neural deafness, the defect may be in the organ of Corti or the auditory nerve or in the ascending auditory pathways or auditory cortex.
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