Question 1:
Which structure in the ear transduces sound vibrations into electrical signals?
Explanation: The correct answer is A) Cochlea. The cochlea, located in the inner ear, is responsible for transducing sound vibrations into electrical signals. It contains thousands of tiny hair cells that are stimulated by the movement of fluid in response to sound waves. These hair cells convert the mechanical vibrations into electrical signals that can be interpreted by the brain as sound.
Question 2:
Where are the sound vibrations first collected in the ear?
Explanation: The correct answer is B) Eardrum. The eardrum, also known as the tympanic membrane, is a thin, flexible membrane located at the end of the ear canal. It collects sound vibrations from the surrounding environment and vibrates in response to the sound waves. These vibrations are then transmitted to the middle ear for further processing.
Question 3:
Which part of the ear is responsible for transmitting sound vibrations to the cochlea?
Explanation: The correct answer is D) Ossicles. The ossicles, consisting of the malleus, incus, and stapes, are three tiny bones located in the middle ear. Their role is to transmit and amplify sound vibrations from the eardrum to the cochlea. They act as a mechanical lever system, converting the larger, low-pressure vibrations of the eardrum into smaller, high-pressure vibrations that are suitable for the fluid-filled cochlea.
Question 4:
Which part of the ear is responsible for transmitting electrical signals to the brain for processing?
Explanation: The correct answer is C) Auditory nerve. The auditory nerve, also known as the cochlear nerve, carries electrical signals from the cochlea to the brain. These signals contain information about the sound vibrations captured by the ear and are sent to the brain for processing and interpretation, resulting in the perception of sound.
Question 5:
What is the role of the cochlea in the process of sound perception?
Explanation: The correct answer is D) Transducing sound vibrations into electrical signals. The cochlea, located in the inner ear, plays a crucial role in the process of hearing. It contains thousands of tiny hair cells that are stimulated by the movement of fluid in response to sound waves. These hair cells convert the mechanical vibrations into electrical signals that can be interpreted by the brain as sound.