PNB Final Exam Questions and Answers
100% Solved
Neospinothalamatic tract - Responsible for immediate awareness of the
exact location of the painful stimulus
Loss in cones - color blindness
Loss in rods - night blindness
More sensitive to scatter light - Rods
More sensitive to direct light -...
4. The pressure waves distort the basilar membrane on their way to the
round window of the tympatic duct
5. Vibration of the basilar membrane causes vibration of hair cells and
bending of stereocili against the tectorial membrane
6. Signals travel within the auditory nerve
How is a sound wave characterized? - ✔✔Frequency and intensity
Describe the functions of inner and outer hair cells - ✔✔Innner hair cells
are the primary sensory receptors
Outer hair increase the amplitude and clarity of sound (shorten when
depolarized)
What is proportional to the frequency of action potentials in hearing? -
✔✔Loudness of the sound
Describe how pitch and loudness are coded - ✔✔Frequency (pitch)
measured in hertz and intensity (loudness) measured in decimals
Function of the tympanic reflex - ✔✔Protection from loud sounds
The hair cells bend due to the... - ✔✔Sound waves moving the fluid in the
cochlea and the basilar membrane vibrating
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller JOSHCLAY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
