Tag: perception of stimuli

Questions Related to perception of stimuli

The human ear is equipped to register sounds of frequencies between

  1. 20 to 20,000 cycles per second

  2. 1000 to 2000 cycles per second

  3. 5000 to 7000 cycles per second

  4. 5000 to 10,000 cycles per second

  5. 10,000 to 20,000 cycles per second


Correct Option: A
Explanation:

The middle ear is mainly known as a sound amplifier of the ear. It has ear ossicles to amplify the sound. The human ear can respond to minute pressure vibrations in the air if they are in the audible frequency range of 20 Hz - 20,000 Hz or cycles per second.

So, the correct answer is option A.

Our ear can hear the frequency of sound waves

  1. 20 to 20,000 cycles / sec

  2. 1000 to 2000 cycles / sec

  3. 5000 to 7000 cycles / sec

  4. 5000 to 10,000 cycles / sec


Correct Option: A
Explanation:

Hearing range describes the range of sound wave frequencies, that can be heard by humans or other animals. Human audible range is commonly 20 to 20,000 Hz. 

Otorhinolaryngology is the study of 

  1. Brain cells

  2. Bird anatomy

  3. Locomotary organs

  4. Ear, nose and throat (ENT)


Correct Option: D
Explanation:

Otorhinolaryngology is also called as otolaryngology. It is the area of medicine that deals with conditions of the ear, nose, and throat (ENT) region. 

In the human ear, in utriculus and calculus, there are
calcareous particles called catatonia, which respond to

  1. Change of posture

  2. Internal pressure

  3. Hearing

  4. Sense of smell


Correct Option: A
Explanation:

Otoconia helps in balancing the body, during the change of posture when the  body is imbalanced and tilted onto one side the otoconia touch the steroidal and bend it causing the generation of nerve impulse.

A person going upto 10,000 feet height in a hot air balloon may develop severe pain in the ear due to

  1. Blocked eustachian tube

  2. Rupture of fenestra rotunda

  3. Endolymph getting into semicircular canals

  4. Fear of great height


Correct Option: B

The middle ear and internal ear of mammals are enclosed in which of the following bones __________________.

  1. Tympanic bulla and periotic bone (Temporal bone)

  2. Ethmoid

  3. Tympanic bulla

  4. Mastoid


Correct Option: A
Explanation:

The auditory bulla (pl. bullae) is a hollow bony structure on the ventral, posterior portion of the skull that encloses parts of the middle and inner ear. In most species, it is formed by the tympanic part of the temporal bone.

Otoconium is found in

  1. Perilymph

  2. Haemolymph

  3. Synovial fluid

  4. Otolithic membrane


Correct Option: D
Explanation:

An otolith also called as statoconium or otoconium, is a structure in the saccule or utricle of the inner ear, in the vestibular labyrinth of vertebrates. Statoconia (also called as otoconia) are numerous grains, often spherical in shape, between 1 and 50 m. Statoconia are also sometimes termed a statocyst. 

Rats can perceive sound waves of frequency from ........... KHz.

  1. 20 - 30

  2. 150

  3. 1000

  4. 20 - 90


Correct Option: D
Explanation:

The hearing is a mechanism which requires a sound under a particular range of frequency. It is known as the audible range. Ultrasonic sound is the sound of higher frequency and infrasonic are the sound of lower frequency as compared to normal audible range. Rats hearing frequency can be as low as 20 kHz to as high as 90kHz.

So, the correct answer is option D.

Our ears are most sensitive to sound of.

  1. $16$ cycles/sec

  2. $2000$ cycles/sec

  3. $1000$ cycles/sec

  4. $500$ cycles/sec


Correct Option: A

Echolocation is a characteristic of

  1. Insects

  2. Birds

  3. Bats

  4. Monkeys

  5. Rats


Correct Option: C
Explanation:

The sound travels through the air as a wave and the energy of this wave bounces off any object it comes across. A bat emits a sound wave and listens carefully to the echoes that return to it. The bat's brain processes the returning information. By determining how long it takes a noise to return, the bat's brain figures out how far away an object is. The bat can also determine where the object is, how big it is and in what direction it is moving.