Question

Given below is a diagrammatic cross-section of a single loop of the human cochlea.

Which one of the following options correctly represents the name of three different parts?

• A. A-Tectorial membrane;
  B-Perilymph;
  C-Secretory cells;
  D-Endolymph
• B. A-Endolymph;
  B-Sensory hair cells;
  C-Serum;
  D-Tectorial membrane
• C. A-Sensory hair cells;
  B-Endolymph;
  C-Tectorial membrane;
  D-Perilymph
• D. A-Perilymph;
  B-Tectorial membrane;
  C-Endolymph;
  D-Organ of Corti

Answer 1

Answer: (D)

The cochlea has three fluid-filled sections. The perilymph fluid in the canals differs from the endolymph fluid in the cochlear duct. The organ of the Corti is the sensor of pressure variations.