Vestibular Quiz

1. What three systems are involved in balance?

Auditory, olfactory, gustatory

Muscular, skeletal, nervous

Cardiovascular, respiratory, endocrine

Visual, proprioceptive/somatosensory, vestibular

Balance is maintained through the integration of visual input, proprioceptive/somatosensory input, and information from the vestibular system.

Explanation

Balance is maintained through the integration of visual input, proprioceptive/somatosensory input, and information from the vestibular system.

2. What typically causes a sensation of movement known as vertigo?

A disconnect between the 3 systems involved in balance (vestibular, proprioceptive, visual)- usually a spinning sensation

Listening to loud music

Excessive caffeine consumption

A lack of sleep

Vertigo is often caused by issues related to the vestibular system, proprioceptive system, and visual system working together to maintain balance.

Explanation

Vertigo is often caused by issues related to the vestibular system, proprioceptive system, and visual system working together to maintain balance.

3. What is the feeling of disequilibrium?

Having perfect harmony

Being off balance

Feeling centered

Sense of stability

Disequilibrium refers to a state of being off balance, where one feels unstable or unsteady.

Explanation

Disequilibrium refers to a state of being off balance, where one feels unstable or unsteady.

4. What is congenital nystagmus?

Eye twitching due to stress.

A type of vertigo involving rapid eye movements.

Nystagmus without balance issues

Blurred vision caused by allergies.

Congenital nystagmus is a condition characterized by involuntary eye movements that are typically present from birth and do not involve issues with balance. It is not related to eye twitching, vertigo, or blurred vision caused by allergies.

Explanation

Congenital nystagmus is a condition characterized by involuntary eye movements that are typically present from birth and do not involve issues with balance. It is not related to eye twitching, vertigo, or blurred vision caused by allergies.

5. What organs are involved in the vestibular system/apparatus (canals and otolith organs) in the inner ear?

4 total semicircular canals (2 on each side) & 1 otolith organ on each side

3 total semicircular canals & 1 otolith organ on each side

6 total semicircular canals (3 on each side)2 otolith organs on each side (utricle and saccule)

5 total semicircular canals (2 on one side, 3 on the other) & 1 otolith organ on each side

The vestibular system in the inner ear consists of 6 total semicircular canals (3 on each side) and 2 otolith organs on each side (utricle and saccule). Other options provided have an incorrect number of canals and otolith organs, thus making them incorrect.

Explanation

The vestibular system in the inner ear consists of 6 total semicircular canals (3 on each side) and 2 otolith organs on each side (utricle and saccule). Other options provided have an incorrect number of canals and otolith organs, thus making them incorrect.

6. What fluids are found inside the bony and membraneous labryinths of the inner ear?

Cerebrospinal fluid in the bony labryinth, endolymph in the membraneous labryinth.

Endolymph in the bony labryinth, perilymph in the membraneous labryinth.

Perilymph is in the bony larbiynth, endolymph is in the membraneous labryinth

Perilymph in the bony labryinth, cerebrospinal fluid in the membraneous labryinth.

The bony labyrinth is filled with perilymph, while the membraneous labyrinth is filled with endolymph. This distinction is important for understanding the functions of the inner ear structures.

Explanation

The bony labyrinth is filled with perilymph, while the membraneous labyrinth is filled with endolymph. This distinction is important for understanding the functions of the inner ear structures.

7. What is the vestibule?

The vestibule is a type of clothing worn by ancient Roman soldiers.

The vestibule is a structure within the human ear that helps maintain balance.

The vestibule is the central part of the osseous labyrinth, and is situated medial to the tympanic cavity, behind the cochlea, and in front of the semicircular canals.

The vestibule is a small room or hall just inside the entrance of a building.

The correct answer describes the vestibule within the context of anatomy, specifically in relation to the ear structure. The incorrect answers provide alternative definitions or contexts unrelated to the anatomical definition of the vestibule.

Explanation

The correct answer describes the vestibule within the context of anatomy, specifically in relation to the ear structure. The incorrect answers provide alternative definitions or contexts unrelated to the anatomical definition of the vestibule.

8. What is the ductus reuniens?

A blood vessel connecting the heart to the lungs

A muscle responsible for eye movement

A short membranous tube passing from the lower end of the saccule to the cochlear duct of the vestibular labyrinth. Cochlea to the saccule. Causes dizziness from loud sounds, if there is an abnormal connection.

A nerve fiber connecting the brain to the spinal cord

9. What is the endolymphatic duct?

A passage for blood flow to the inner ear.

Where the endolymph drians- a problem with this duct causes both vestibular and cochlear problems. Shunts endolymph from the cochlear and vestibular system. Drains in the subdural area. A small membranous canal connecting with the saccule and the utricle ofthe membranous labyrinth and terminating in the endolymphatic sac.

A tube for hearing sounds in the ear.

A duct responsible for tear drainage in the eye.

The endolymphatic duct is a small membranous canal connecting with the saccule and the utricle of the membranous labyrinth and terminating in the endolymphatic sac. It plays a crucial role in shunting endolymph from the cochlear and vestibular system, and a problem with this duct can lead to both vestibular and cochlear problems.

Explanation

The endolymphatic duct is a small membranous canal connecting with the saccule and the utricle of the membranous labyrinth and terminating in the endolymphatic sac. It plays a crucial role in shunting endolymph from the cochlear and vestibular system, and a problem with this duct can lead to both vestibular and cochlear problems.

10. What is the crista ampullaris?

The crista ampullaris is the sensory organ of rotation located in the semicircular canal of the inner ear. The function of the crista ampullaris is to sense angular acceleration and deceleration. Bulge on the semicircular canal. One is the crista ampullaris, multiple is cristae ampularis. At the "ampulated end" of the semicircular canals.

The crista ampullaris is a species of tropical fish commonly found in coral reefs.

The crista ampullaris is a part of the digestive system located in the stomach.

The crista ampullaris is a type of rock formation found in mountains.

The crista ampullaris is a key structure in the inner ear responsible for maintaining balance and detecting rotational movements.

Explanation

The crista ampullaris is a key structure in the inner ear responsible for maintaining balance and detecting rotational movements.

11. What is the common crux?

The central point where all branches of the SSC join together.

The middle section of the anterior SSC that is often enlarged.

The lower part of the SSC that connects to the inferior side.

The point where the SSC branches into multiple different directions.

The one common branch of the superior/posterior SSC, non ampulated end

The common crux refers to the one common branch of the superior/posterior SSC without any amputations at the end.

Explanation

The common crux refers to the one common branch of the superior/posterior SSC without any amputations at the end.