Chap 17 Flashcards
What type of image is formed on the retina due to the lens of the eye?
Inverted (upside-down) image
The brain later interprets and adjusts the image to the correct orientation.
What is the process that takes place during dark adaptation?
Rhodopsin regeneration
In bright light, photoreceptor cells become desensitized, requiring time to adjust for low-light vision.
What causes the bending of stereocilia in the auditory system?
Sound waves causing vibration in the basilar membrane
This bending opens ion channels, leading to action potential generation.
What is the function of the Eustachian Tube?
Equalizes air pressure on both sides of the tympanic membrane
This is essential for proper hearing.
Where is endolymph found?
In the Saccule, Utricle, and Cochlear Duct
Saccule and Utricle are involved in detecting linear acceleration and head position, while the Cochlear Duct is involved in hearing.
What is the role of the vestibular branch of the vestibulocochlear nerve?
Transmits equilibrium information
It is key in maintaining balance and spatial orientation.
Where are the vestibular nuclei located?
In the brainstem
These nuclei process balance signals.
What do vestibular ganglia contain?
Cell bodies of sensory neurons for balance
They play a role in the equilibrium pathway.
True or False: The brain processes and flips the inverted image formed on the retina.
True
Fill in the blank: The fluid found in the Saccule and Utricle is called _______.
Endolymph
