(done!) Vestibular Sense

Question 1

At one angle to each other are the posterior, lateral and anterior semicircular canals oriented to each other?

Answer 1

At right angles

Question 2

How does the endolymph in the canals help with vestibular sense?

Answer 2

When we rotate, the fluid shifts in the semicircular canals, allowing us to be able to tell what direction our head is moving in
We can also tell the strength of the rotation based on how quickly the fluid moves

Question 3

How do the otolithic organs contribute to the vestibular sense?

Answer 3

The utricle senses horizontal acceleration while the saccule senses vertical acceleration. This happens when calcium carbonate attached to hair cells is moved during body motion and triggers an action potential