Sound Is a Longitudinal Pressure Wave

Q.

How does ear maintain body balance?

Q.

What is the full form of ABR?

Q.

The given diagram is of the membranous labyrinth found in the inner ear. Study the diagram and answer the questions that follow:

1. Name the sensory cells that help in hearing.
2. The part that is responsible for the static balance of the body.
3. The membrane-covered opening connects the middle ear to the inner ear.
4. The fluid is present in the middle chamber of the cochlea.
5. The structure maintains the dynamic equilibrium of the body.

Q.

Ear is most sensitive to

1. 10, 000 cycles/sec

2. 1, 000 cycles/sec

3. 100 cycles/sec

4. 500 cycles/sec

Q. Which maintains static equilibrium?

1. Cerebrum
2. Utricle & Saccule
3. Cerebellum
4. Semicircular canal

Q.

Answer the following questions briefly:

Which part of the human ear gives ‘Dynamic balance’ and ‘Static balance’ to the body?

Q.

Why do certain sounds make your skin crawl?

Q.

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

Name the part of the ear associated with (1) static balance, (2) hearing, and (3) dynamic balance.

Q. What is the intensity of sound in normal conversation?

1. 30-60 decibel
2. 70-90 decibel
3. 120-150 decibel
4. 10-20 decibel

Q. Suppose you felt an earthquake, which of the following sense organs would you think was involved in this feeling?

1. Skin of your soles
2. Proprioceptors
3. Eyes
4. Ears

Q. THE HEARING RANGE OF A HUMAN EAR IS 20Hz TO 20kHz . WHAT WILL BE THE TIME INHTERVAL

Q. Which of the following term is used for sound below 20 Hz?

1. Infrasound
2. Ultrasound
3. Echo
4. None of the above

Q. Hearing in rabbit is better than frog. One reason for this is that rabbit has

1. Three semicircular canal
2. Both fenestra ovalis and eustachian tubes
3. Vibratile tympanic membrane
4. Movable pinna

Q. Very short answer type.
Name the organ which produces sound.

Q.

Ear is most sensitive to

1. 10, 000 cycles/sec

2. 1, 000 cycles/sec

3. 100 cycles/sec

4. 500 cycles/sec

Q. The sensory receptors that respond to sound, develop receptor potentials when their

1. Sodium-potassium pumps become deactivated.
2. Hairs are absent
3. Pigments absorb pressure
4. Surface proteins are altered by a change in pH

Q. Which of the following membranes given us the ability to different pitches of sound?

1. Membrane covering the round window
2. Tympanic membrane
3. Tectorial membrane
4. Basilar membrane

Q.

Ear is most sensitive to

1. 10, 000 cycles/sec

2. 1, 000 cycles/sec

3. 100 cycles/sec

4. 500 cycles/sec