How do we Hear

Q. What is the function of cochlea in a human ear?

1. It protects the ear from damage.
2. It converts ear drum vibrations into electrical impulses.
3. It amplifies vibrations reaching the middle ear.
4. It directs sound waves into the ear canal.

Q.

Explain the outer ear, middle ear and the inner ear briefly

Q. The surface area of the oval window is ___ of that of the ear drum.

1. 
   $\frac{1}{5}\text{th}$
2. 
   $\frac{1}{10}\text{th}$
3. 
   $\frac{1}{20}\text{th}$
4. $\frac{1}{25}\text{th}$

Q.

Voice change - Can you do the sum?

Q. Outer part of the ear consist(s) of:

1. Pinna
2. Cochlea
3. Ear drum
4. Malleus

Q.

What functions are served by the parts of middle Ear??

Q.

1. With reference to the human ear, answer the following questions:

Name the nerve which transmits messages from the ear to the brain.

Q. In humans, middle ear consists of ___ small bones.

1. one
2. two
3. three
4. four

Q. How do different parts of the ear work together to help us hear sound? Explain.
[5 marks]
[Human ear]

Q. Which of the following is/are the part of middle ear ?

1. 
   Malleus
2. 
   Incus
3. 
   Stapes
4. 
   Tympanum

Q. The reason why we have two ears is:

1. To determine where the sound originates
2. To improve the quality of sound
3. None of the above
4. If one ear fails, the other ear serves as a backup

Q. In human ear, sounds are collected by ______.

1. 
   pinna
2. 
   tympanum
3. 
   cochlea
4. 
   stapes

Q.

The voices of men, women and children are different due to:

Q.

Which of the following correctly represents the hearing path in humans?

1. sound vibrations > pinna > eardrum > cochlea > sound amplification > electrical signal > brain

2. sound vibrations > pinna > eardrum > electrical signal > cochlea > sound amplification > brain

3. sound vibrations > pinna > sound amplification > eardrum > cochlea > electrical signal > brain

4. sound vibrations > pinna > eardrum > sound amplification > cochlea > electrical signal > brain

Q. A damaged ear drum can cause:

1. Impaired vision
2. Loss of sense of touch
3. Impaired hearing
4. Loss of sense of smell

Q. Eardrum is also known as ___.

1. 
   pinna
2. 
   cochlea
3. 
   tympanum
4. 
   oval window

Q. Which part of the human ear is shaped like a funnel?

1. Cochlea
2. Ear drum
3. Pinna
4. Ear canal

Q. Th eardrum sends the vibrations to the _______?

1. Brain
2. Outer ear
3. Nerve Cell
4. Middle ear

Q. The reason why we have two ears is ___ .

1. to determine the origination of sound
2. to improve the quality of sound
3. if one ear fails, the other ear serves as a backup
4. to reduce the sound

Q.

Statement 1: Sound vibrations make the ear drum vibrate which further sends vibrations to the inner ear.
Statement 2: Ear drum is a thin stretched membrane.

1. Both the statements are false.

2. Both the statements are true.

3. Statement 1 is false but statement 2 is true.

4. Statement 1 is true but statement 2 is false.

Q. Which part of the human ear is shaped like a funnel?

1. Ear canal
2. Ear drum
3. Pinna
4. Cochlea

Q. The function of the three small bones in middle ear is to:

1. Protect the ear
2. Enhance the vibrations reaching middle ear
3. Produce sound inside the ear
4. Produce hormones essential for hearing

Q. Find the pressure amplitude of given sound wave in the fluid of inner ear.

1. 0.03 Pa
2. 0.04 Pa
3. 0.3 Pa
4. 0.4 Pa

Q. Which part of the human ear is shaped like a funnel?

1. Ear canal
2. Ear drum
3. Cochlea
4. Pinna