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प्रश्न
Write short notes on the following Ear ossicles
उत्तर
Ear ossicles
The middle ear contains a flexible chain of three middle bones called ear ossicles. The three ear ossicles are as follows.
(i) Malleus
(ii) Incus
(iii) Stapes
The malleus is attached to tympanic membrane on one side and to incus on the other side. The incus is connected with stapes. Stapes, in turn, are attached with an oval membrane, fenestra ovalis, of internal ear. The ear ossicles act as a lever that transmits sound waves from external ear to internal ear.
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संबंधित प्रश्न
Explain how the human ear works.
Explain the following:
Mechanism through which a sound produces a nerve impulse in the inner ear.
The number of oscillations per second of a vibrating object is called its time period.
For human ears, the audible range is 20 Hz to 20,000 Hz.
Mention the exact location of the Semi-circular canals
fill in the blanks with suitable functions: Ciliary body and __________.
What is the function of ear ossicles?
The ear ossicle which is attached to the tympanum.
Sclerotic layer or choroid layer.(Which one forms the Iris ?)
Mention, where in living organism is the following located and state their main function:
Organ of corti
Name the part of the ear associated with hearing.
The figure below is the sectional view of a part of the skull showing s sense organ:
Name the sense organ.
The diagram alongside represents the structure found in the inner ear. Study the same and then answer the questions that follow:
(i) Name the parts labelled A, B, C and D.
(ii) Name the parts of the ear responsible for transmitting impulses to the brain.
(iii) Name the part labelled above which is responsible for:
1. Static equilibrium. 2. Dynamic equilibrium. 3. Hearing
(iv) Name the audio receptor cells which pick up vibrations.
(v) Name the fluid present in the inner ear.
State the Location:
Semicircular canals
Vibrating particles travel all the way from the vibrating objects to the ear.
List the causes of noise pollution.
State the functions of the following:
Auditory nerve
The median canal of cochlea is filled with ______.
Which of the following structures equalises the air pressure on either side of the tympanum?
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
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- 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.
