Question

Semicircular canals of the internal ear of a mammal contain a fluid called______.
A) Lymph
B) Endolymph
C) Perilymph
D) Haemolymph

Answer 1

Hint: Semicircular canals are tiny, fluid-filled tubes in the internal ear that help you keep your balance. The semicircular canal responds to head rotation.

Complete Answer:
A) Lymph (i) As the blood passes through the capillaries in tissues, some water along with many small water soluble substances move out into the spaces between the cells of tissues leaving the larger proteins and most of the formed elements in the blood vessel.
(ii) The released out fluid is called the lymph or tissue fluid.
(iii) Lymph circulates in the lymphatic system.
B) Endolymph – It is the fluid-filled in semicircular canals of the membranous labyrinth of inner ear.
C) Perilymph – It is the fluid filled in a bony labyrinth and separates it from the membranous labyrinth.
D) Haemolymph – It is a fluid similar to blood and found in Phylum Arthropoda.

The correct option is B. Endolymph.

Note: There are three semicircular canals or semicircular ducts i.e. superior, posterior and lateral. They are located in the innermost part of each ear, the inner ear.
(i) Each canal is filled with a fluid called endolymph.
(ii) It contains motor sensors within the fluids.