Hearing, Language And Vestibular Systems

1. What is the function of the auditory system?

Responsible for taste perception.

Exteroceptive system concerned with the perception of sound

Manages the sense of smell.

Controls the sense of touch.

The auditory system is specifically responsible for processing sound and is an exteroceptive system, meaning it is concerned with the perception of external stimuli.

Explanation

The auditory system is specifically responsible for processing sound and is an exteroceptive system, meaning it is concerned with the perception of external stimuli.

2. What is the function of the vestibular system?

Muscle growth

Proprioception, maintenance of balance and equillibrium

Temperature regulation

Hearing acuity

The vestibular system is responsible for proprioception, which helps in maintaining balance and equilibrium. It is not directly related to hearing acuity, muscle growth, or temperature regulation.

Explanation

The vestibular system is responsible for proprioception, which helps in maintaining balance and equilibrium. It is not directly related to hearing acuity, muscle growth, or temperature regulation.

3. Where does the vestibulocochlear nerve enter the brainstem?

At the foramen magnum - the opening at the base of the skull through which the spinal cord passes.

At the cerebellopontine angle - the junction between the cerebellum, the pons and the medulla

At the optic chiasm - where the optic nerves partially cross over in the brain.

At the olfactory bulb - the structure in the brain responsible for the sense of smell.

The vestibulocochlear nerve enters the brainstem at the cerebellopontine angle, which is a distinct location specific to its pathway.

Explanation

The vestibulocochlear nerve enters the brainstem at the cerebellopontine angle, which is a distinct location specific to its pathway.

4. What is the middle ear filled with?

Mucus

Water

Blood

Air

The middle ear is filled with air, which helps in transmitting sound vibrations to the inner ear. Water, blood, and mucus are incorrect answers as they do not play a role in the functioning of the middle ear.

Explanation

The middle ear is filled with air, which helps in transmitting sound vibrations to the inner ear. Water, blood, and mucus are incorrect answers as they do not play a role in the functioning of the middle ear.

5. Where are the vestibular hair cells found?

The macula of the utricle, the macula of the saccule and the crista ampullares of the semicircular canals

The epidermis of the skin

The retina of the eye

The cochlea

Vestibular hair cells are specialized sensory cells located in the inner ear, specifically in the areas mentioned in the correct answer. The cochlea is responsible for hearing and does not contain vestibular hair cells. The retina of the eye detects light, and the epidermis of the skin is not associated with sensory functions related to balance and orientation.

Explanation

Vestibular hair cells are specialized sensory cells located in the inner ear, specifically in the areas mentioned in the correct answer. The cochlea is responsible for hearing and does not contain vestibular hair cells. The retina of the eye detects light, and the epidermis of the skin is not associated with sensory functions related to balance and orientation.

6. What type of fluid do the scala vestibuli and scala tympani contain?

Cerebrospinal fluid

Lymph

Perilymph

Endolymph

The scala vestibuli and scala tympani contain perilymph, a fluid that fills the space within the cochlea of the inner ear. Endolymph, cerebrospinal fluid, and lymph are not found in these specific areas of the ear.

Explanation

The scala vestibuli and scala tympani contain perilymph, a fluid that fills the space within the cochlea of the inner ear. Endolymph, cerebrospinal fluid, and lymph are not found in these specific areas of the ear.

7. What type of fluid is found in the cochlear duct?

Perilymph

Endolymph

Cerebrospinal fluid

Blood plasma

Endolymph is the fluid found in the cochlear duct, while perilymph surrounds the cochlear duct. Cerebrospinal fluid is found in the brain and spinal cord, and blood plasma circulates throughout the body.

Explanation

Endolymph is the fluid found in the cochlear duct, while perilymph surrounds the cochlear duct. Cerebrospinal fluid is found in the brain and spinal cord, and blood plasma circulates throughout the body.