Question

Match the given terms in column-I with the definition given in column II and choose the correct options.

	Column -I		Column-II
A.	Semi-circular canal	I	Spiral organ of Corti
B.	Vestibule	II	Fluid is found in the scala vestibule and scala tympani
C.	Cochlea	III	Evaluates rotational motion
D.	Perilymph	IV	Fluid found within the Organ of Corti
E.	Endolymph	V	Responds to gravity and movements of the head

A. A-III; B-V; C-I; D-II; E-IV
B. A-I; B-II; C-III; D-IV; E-V
C. A-II; B-III; C-IV; D-V; E-I
D. A-IV; B-I; C-V; D-II; E-III

Answer 1

Hint:
The outer ear, middle ear, and inner ear are the three section of the ear. Each part has different functions.

Complete answer:
The inner ear is the innermost part of the ear. The vestibulocochlear organs are present in the inner ear. The inner ear has two parts namely a bony labyrinth and a membranous labyrinth. The bony labyrinth is nothing but a sequence of bony cavities that constitutes cochlea, vestibules, and three semi-circular canals.
The semi-circular canal is interconnected tubes located inside each ear. They are lined with cilia and filled with a fluid known as endolymph. With every movement of the head, the endolymph moves the cilia. The osseous labyrinth's central part is known as the vestibule and it responds to gravity and movements of the head. The cochlea is the auditory portion of the inner ear. It is a spiral-shaped cavity present in the bony labyrinth.
In the membranous labyrinth of the inner ear, a fluid, endolymph is present. It lies within the bony labyrinth and is surrounded by perilymph. Within the cochlea the extracellular fluid perilymph is present. The major component in perilymph is sodium.
Hence the correct answer for the given question is. A-III; B-V; C-I; D-II; E-IV .

Option ‘A’ is correct

Note:
Inner ear also maintains balance by detecting position and motion. In addition to this, it converts the mechanical signal from the middle ear into electrical signals.