Podcast
Questions and Answers
What directly triggers the generation of electrical charges within hair cells in the cochlea?
What directly triggers the generation of electrical charges within hair cells in the cochlea?
- The shearing of hair cells against the tectorial membrane. (correct)
- The movement of perilymph within the cochlear duct.
- The transmission of neural impulses along the auditory nerve.
- The vibration of the oval window in response to sound energy.
How does the location of basilar membrane vibration correlate with the perception of sound frequency?
How does the location of basilar membrane vibration correlate with the perception of sound frequency?
- High-frequency sounds cause maximal vibration at the apex of the basilar membrane.
- Low-frequency sounds cause maximal vibration near the oval window.
- High-frequency sounds cause maximal vibration near the oval window. (correct)
- The location of vibration is not related to perceived frequency.
A patient reports difficulty hearing high-pitched sounds. Which area of the cochlea is most likely affected?
A patient reports difficulty hearing high-pitched sounds. Which area of the cochlea is most likely affected?
- The tectorial membrane along the apical region.
- The base of the basilar membrane. (correct)
- The auditory nerve.
- The apex of the basilar membrane.
If a sound wave causes the greatest motion of the basilar membrane at a location farthest from the oval window, what is the approximate frequency of the sound wave?
If a sound wave causes the greatest motion of the basilar membrane at a location farthest from the oval window, what is the approximate frequency of the sound wave?
How do the electrical pulses generated by nerve cells along the organ of Corti contribute to sound perception?
How do the electrical pulses generated by nerve cells along the organ of Corti contribute to sound perception?
Flashcards
Basilar Membrane
Basilar Membrane
Membrane in the cochlea that vibrates in response to sound, causing hair cells to move.
Hair Cells & Tectorial Membrane
Hair Cells & Tectorial Membrane
Shearing motion occurs between these two structures within the cochlea, leading to electrical changes in hair cells.
Basilar Membrane Base
Basilar Membrane Base
The location where high-frequency sounds cause the greatest motion on the basilar membrane.
Basilar Membrane Apex
Basilar Membrane Apex
Signup and view all the flashcards
Neural Impulses From Hair Cells
Neural Impulses From Hair Cells
Signup and view all the flashcards
Study Notes
- Sound energy transmission to the cochlea causes the basilar membrane to vibrate.
- Basilar membrane vibration causes hair cells to shear on the tectorial membrane.
- Shearing of hair cells leads to a chemical change and electrical charge within the cells.
- Electrical charges generate neural impulses that travel along the auditory nerve to the brain.
- The brain interprets these impulses as sounds.
- High-frequency sounds induce the greatest basilar membrane motion near the oval window.
- Low-frequency sounds induce the greatest basilar membrane motion farthest from the oval window.
- Different nerve cells along the organ of Corti produce electrical pulses based on sound wave frequency.
Frequency examples along Basilar Membrane
- 200 Hz is located at the apex of the basilar membrane
- 400 Hz is located near the apex of the basilar membrane
- 600 Hz is located near the apex of the basilar membrane
- 800 Hz is located along the basilar membrane
- 1,000 Hz is located along the basilar membrane
- 1,500 Hz is located along the basilar membrane
- 2,000 Hz is located along the basilar membrane
- 3,000 Hz is located along the basilar membrane
- 4,000 Hz is located along the basilar membrane
- 5,000 Hz is located along the basilar membrane
- 7,000 Hz is located along the basilar membrane
- 20,000 Hz is located at the base of the basilar membrane
Frequency Ranges
- High-frequency waves (1,500-20,000 Hz) are detected towards the base of the basilar membrane
- Medium-frequency waves (600-1,500 Hz) are detected along the basilar membrane
- Low-frequency waves (200-600 Hz) are detected towards the apex of the basilar membrane
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Sound energy transmission causes the basilar membrane to vibrate, leading to hair cell shearing and electrical charge generation. These charges create neural impulses that travel to the brain for sound interpretation. High and low-frequency sounds induce basilar membrane motion near and far from the oval window, respectively.
