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प्रश्न
Give reason:
Three small bones of ear ossicles are advantageous as compared to one single bone for hearing.
उत्तर
The ear ossicles, malleus, incus, and stapes create a complex lever system. This design is advantageous for hearing because it:
- Increases the mechanical force of vibrations.
- Improves the efficient transmission of sound energy from the eardrum to the inner ear structures.
- Reduces the amplitude of vibrations.
Due to impedance matching, mammalian hearing is more sensitive and has higher frequency limitations than reptiles.
संबंधित प्रश्न
Time taken by an object to complete one oscillation is called ___________.
Mention the exact location of the Eustachian tube
Differentiate between the Rods and Cones of Retina (Type of pigment)
Perilymph or endolymph (Which one surrounds the organ of Corti ?)
Differentiate between members of the following pair with reference to what is asked in bracket.
Dynamic balance and static balance (Definition)
State whether the following statements are true (T) or false (F). If false, correct them by changing any one single word in each.
Semi-circular canals are concerned with static (positional) balance.
Given below is certain structure. Write against them its functional acivity.
organ of corti and ……………….
What is the biological term for the three small bones present in the middle ear collectively?
Draw a labelled diagram of the inner ear.
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.
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
Choose the correct answer.
Canal joining middle ear to pharynx ___________
Given below is a diagram of a part of the human ear. Study the same and answer the question that follow:
Name the parts labeled A, B and C in the diagram.
Complete the following sentence with appropriate word :
________ is the organ of balance and hearing in the body.
Mention, if the following statement is True or False
The part of ear associated with balance is the cochlea.
State the Function:
Endolymph
The part of the ear that turns pressure variations into electrical signals is ______.
In the inner ear, the pressure variations are turned into electrical signals by the ______.
List the causes of noise pollution.
Which of the following structures equalises the air pressure on either side of the tympanum?
