Question

The tectorial membrane is found in the
A) Eye of frog
B) Eye of mammals
C) Ear of mammals
D) Tongue of frog

Answer 1

Hint: It helps in both balancing and hearing. It consists of three major parts that help in transmitting sound waves to the brain. Mainly found in mammals. Also, aids in awareness of positioning and surrounding.

Complete Step by Step Answer:
- The Tectorial membrane is one of the inner part ears and found in Cochlea. In order to achieve a healthy auditory function in mammals - The tectorial membrane is very useful. It also influences the sensory cells of the inner ears by storing calcium ions in it. The depletion in the stored calcium ions in the inner ears starts due to the loud sounds which in turn affects the sensory cells as well and reduces their overall response. But, as the level of tectorial membrane calcium ions starts building up, the sensory cells achieve their previous effectiveness.
- The structure of the Tectorial membrane is a gel- like structure and comprises water up to 97%. The dry weight Tectorial membrane is made up of $50\mathrm{\%}$ collagen, $25\mathrm{\%}$ non- collagenous glycoproteins, and $25\mathrm{\%}$ proteoglycan.

So the correct answer is, ”Ear of Mammals”.

Additional Information:
- The different frequency entering the inner ear stimulates the hair cell of different regions by the shearing actions of stereocilia and the Tectorial membrane.
- The main characteristics of the Tectorial membrane is transforming the received sound to mechanical stimulations.
Eyes of Frog: Having notable night visions, Frog’s eyes are quite sensitive to any movements. Their bulging eyes provide larger viewing capabilities even to their back to some extent.
Eyes of Mammals: All the mammals possess a pair of eyes and have improved night vision. The larger pupils of mammals allow more light to enter into their eyes thus enhancing their vision sight.
The tongue of Frog: The frog’s tongue is connected to the lower jaw unlike humans as their tongue is attached to the back of the throat. A frog’s tongue has an inertial projection system.

Note: The Tectorial membrane is present over the hair cells. It is present inside the vertebral canal.
- The vibrations in the inner ears cause the motion of the cilia of hair cells. The word tectorial means cover in anatomy.