iClicker Module 3

Question 1

Which of the following would be almost impossible without your vestibular system?
Driving your car
Playing sports
Reading a book
Dancing
All of the above

Answer 1

All of the above

Question 2

“no” movement would be an example of…

Answer 2

Yaw

Question 3

“circular head” movement would be an example of…

Answer 3

Roll

Question 4

If you are traveling in a car with the cruise control set to 40 mph and your physics friend is sitting in the passenger seat- what would she say about your current acceleration?

Answer 4

There is no acceleration

Question 5

What is the name of the fluid that is inside the semicircular circular canals?

Answer 5

Endolymph

Question 6

This structure surrounds the cupula?

Answer 6

Ampulla

Question 7

The baseline firing rate (no head movement) of a primary afferent is 100 spikes per second. If the current firing rate is 160 spikes per second, which of the following is true?
The head was _ (quickly or slowly) moved so that the hair cells were deflected _ (towards or away from) the Kinocilium

Answer 7

The head was quickly moved so that the hair cells were deflected towards the Kinocilium

Question 8

The baseline firing rate (no head movement) of a primary afferent is 100 spikes per second. If the current firing rate is 90 spikes per second, which of the following is true?
The head was _ (quickly or slowly) moved so that the hair cells were deflected _ (towards or away from) the Kinocilium

Answer 8

The head was slowly moved so that the hair cells were deflected away from the Kinocilium

Question 9

On an airplane, why don’t you feel like you are moving forward?

Answer 9

Vestibular system encodes acceleration not velocity

Question 10

Which otolith would be activated when you start running?

Answer 10

Utricle
(horizontal)

Question 11

Which otolith would be activated if you reached the end of the bungee cord?

Answer 11

Saccule
(vertical)

Question 12

If you are spining on a bar stool in the dark… After 1 or 2 seconds you will think you are slowing down. After 30 seconds you will perceive that you are no longer rotating. WHY???

Answer 12

Hair cells respond to acceleration not the constant circular velocity

Question 13

What would happen if you were abruptly stopped?

Answer 13

You would sense you are going in the opposite direction

Question 14

True or False: The vestibular information influences other sensory systems?

Answer 14

True

Question 15

Yes or No: Can you get dizzy in the absence of visual information?

Answer 15

Yes

Question 16

If you were flying a plane, how do you whether you are accelerating or flying diagonally upward?

Answer 16

The vestibular response is different, so it isn’t a problem