Draw a well-labelled diagram of the membranous labyrinth found in the inner ear. Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions: The sensory cells that help in hearing. The part that is responsible for static balance of the body. The membrane-covered opening that connects the middle ear to the inner ear. The fluid present in the middle chamber of cochlea. The structure that maintains dynamic equilibrium of the body.

Organ of Corti Utriculus and sacculus Semicircular canal Oval window/Round window Endolymph Sensory cells in semicircular canals

Draw a well-labelled diagram of the membranous labyrinth found in the inner ear. Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions: The sensory cells

Draw a well-labelled diagram of the membranous labyrinth found in the inner ear.
Based on the diagram drawn above in (i), give a suitable term for each of the following descriptions:
1. The sensory cells that help in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane-covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.

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Chapter 10 Nervous System
Exercises | Q 40. | Page 153

Q 4.1 | 5 marks

Explain how the human ear works.

Write short notes on the following: Cochlea

Deafness is causal due to the rupturing of the Pinna.

The exact location of the Yellow spot

With reference to the human ear, answer the question that follow:

Name the three small bones present in the middle ear. What is the biological term for them collectively ?

Choose the correct answer :
Organ of corti is found in ___________

Complete the following sentence with appropriate word :
________ is the organ of balance and hearing in the body.

The range of audible frequency for the human ear is

The eardrum is known as ______.

The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.

Label the parts 1 to 8.
State the role of parts 6, 7 and 8.
Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.