Hearing Test 1 — Questions and Answers
Question 1: Known as the labyrinth?
- Inner ear (Correct answer)
- Middle ear
- Outer ear
- All of these
Correct answer: Inner ear
The inner ear is commonly known as the labyrinth due to its complex and intricate structure. It consists of the bony labyrinth and the membranous labyrinth, which house the cochlea for hearing and the vestibular system for balance, forming a maze-like arrangement.
Question 2: Auricle is a component of
- Heart
- Outer ear (Correct answer)
- Inner ear
- Middle ear
Correct answer: Outer ear
The auricle, also known as the pinna, is the visible, external part of the ear. It is a component of the outer ear, responsible for collecting sound waves from the environment and directing them into the ear canal towards the tympanic membrane.
Question 3: Which of the following is not a component of the inner ear?
- Semi circular canal
- Vestibule
- Tympanic membrane (Correct answer)
- Cochlea
Correct answer: Tympanic membrane
The inner ear consists of the cochlea, vestibule, and semicircular canals, which are crucial for hearing and balance. The tympanic membrane, or eardrum, is located at the boundary between the outer ear and the middle ear, and therefore is not a component of the inner ear itself.
Question 4: What is the sound frequency range of human can hear?
- 20kHz
- 20Hz-20kHz (Correct answer)
- 200Hz-2kHz
- More than 20kHz
Correct answer: 20Hz-20kHz
The typical range of sound frequencies that a healthy human ear can perceive is from approximately 20 Hertz (Hz) to 20,000 Hertz (20 kHz). Frequencies below 20 Hz are infrasound, and those above 20 kHz are ultrasound, both generally inaudible to humans.
Question 5: Which of the following is specifically aided by having two ears?
- Multiple noises occurring at once
- The volume of the noises
- The directional nature of sound (Correct answer)
- Different sound kinds
Correct answer: The directional nature of sound
Having two ears (binaural hearing) is essential for sound localization, which is the ability to determine the direction from which a sound originates. The brain uses subtle differences in the arrival time and intensity of sound waves at each ear to pinpoint the sound source, providing a crucial sense of spatial awareness.
Question 6: Which cellls have main auditory receptor cells?
- Phalangeal Cells
- Cells of corti (Correct answer)
- Claudius cellsPilar cells
- Pilar cells
Correct answer: Cells of corti
The main auditory receptor cells are the hair cells, which are located within the Organ of Corti. Therefore, 'Cells of Corti' refers to the entire complex, including these crucial sensory hair cells, which transduce mechanical vibrations into electrical signals that the brain interprets as sound.
Question 7: The inner ear's semicircular canals are helpful in?
- Balance
- Hearing
- Vibration amplification
- Both A & B (Correct answer)
Correct answer: Both A & B
The semicircular canals are crucial components of the inner ear's vestibular system, which is primarily responsible for detecting head movements and maintaining balance. While the canals themselves directly contribute to balance, the inner ear as a whole also houses the cochlea, the organ responsible for hearing. Therefore, considering the broader functions associated with the inner ear where these canals are located, both balance and hearing are key roles.
Hearing Test 1
Known as the labyrinth?