1.
What is this?
Correct Answer
C. The auditory nerve
Explanation
The auditory nerve is the correct answer because it is responsible for transmitting sound signals from the ear to the brain. It carries electrical impulses generated by the cochlea in the inner ear to the auditory cortex in the brain, where they are interpreted as sound. The other options listed (the ear, the small bones, and the ear canal) are all components of the ear, but they do not directly play a role in transmitting sound signals to the brain like the auditory nerve does.
2.
What is this?
Correct Answer
B. The cochlea
Explanation
The cochlea is the correct answer because it is a part of the inner ear that is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain. It is shaped like a snail shell and contains tiny hair cells that are essential for hearing. The other options listed, such as the ear canal, eardrum, and small bones, are also important components of the ear, but they do not directly play a role in the conversion of sound waves into electrical signals.
3.
What is this?
Correct Answer
B. The ear canal
Explanation
The ear canal is the correct answer because it is a tube-like structure that connects the outer ear to the middle ear. It is responsible for transmitting sound waves from the external environment to the eardrum, which is located at the end of the ear canal. The ear canal also plays a role in protecting the delicate structures of the middle and inner ear.
4.
What is this?
Correct Answer
A. The pinna/ ear
Explanation
The pinna, also known as the ear, is the correct answer. The pinna is the visible part of the ear that protrudes from the side of the head. It is responsible for capturing sound waves and directing them into the ear canal. The other options listed are different parts of the ear, but they are not the correct answer to the question.
5.
What is this?
Correct Answer
D. The eardrum
Explanation
The eardrum is the correct answer because it is a thin membrane that separates the outer ear from the middle ear. It plays a crucial role in the process of hearing by vibrating in response to sound waves, which then transmit the vibrations to the middle ear. From there, the vibrations are further transmitted to the inner ear and eventually to the brain, allowing us to perceive sound.
6.
What is this?
Correct Answer
B. The inner ear
Explanation
The inner ear is the correct answer because it is the part of the ear that is responsible for converting sound waves into electrical signals that can be interpreted by the brain. It contains the cochlea, which is responsible for hearing, and the vestibular system, which is responsible for balance and spatial orientation. The inner ear is located deep within the skull and is protected by the temporal bone.
7.
What is this?
Correct Answer
A. The middle ear
Explanation
The middle ear is the correct answer because it is the part of the ear that is located between the outer ear and the inner ear. It includes the eardrum and three small bones called ossicles (the malleus, incus, and stapes). The middle ear is responsible for transmitting sound vibrations from the outer ear to the inner ear, where they are then converted into electrical signals that can be interpreted by the brain.
8.
What is this?
Correct Answer
C. The outer ear
Explanation
The outer ear refers to the visible part of the ear, including the pinna and the ear canal. It is responsible for collecting sound waves from the environment and directing them towards the middle ear. The outer ear also helps in localizing the source of sound and protecting the delicate structures of the middle and inner ear.
9.
What is this?
Correct Answer
A. The small bones
Explanation
The small bones in the ear, also known as the ossicles, are responsible for transmitting sound vibrations from the eardrum to the cochlea. These bones, namely the malleus, incus, and stapes, amplify the sound and play a crucial role in the process of hearing.