When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued
Select one:
A. transmission of nerve impulses from cochlea to auditory nerve
B. movement of fluid against cochlea
C. vibrations of tympanum
D. movement of fluid in semicircular canal
C
The auditory nerve conducts impulses to the cerebrum from structure
Select one:
A. Ossicles
B. Semicircular canal
C. cochlea
D. tympanum
C
As sound vibrations move through the outer ear into the inner ear, the sequence of media through which the vibrations pass is
Select one:
A. solid to liquid to solid
B. gas to solid to liquid
C. gas to liquid to solid
D. solid to gas to liquid
A
To answer these questions, we need to understand how the sensation of motion is processed by the inner ear.
When we spin around in one place and stop, the feeling of continued motion is caused by the movement of fluid in the semicircular canals of the inner ear. These canals are lined with tiny hair-like structures that detect changes in the fluid's movement. When we spin, the fluid in the canals continues to move even after we stop spinning, which can give us the sensation that we are still moving.
Therefore, the correct answer to the first question is D. movement of fluid in the semicircular canal.
The auditory nerve conducts impulses to the cerebrum from the cochlea, which is a spiral-shaped structure in the inner ear. The cochlea is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain. So, the correct answer to the second question is C. cochlea.
Lastly, in the process of sound transmission, the sound vibrations travel through the different parts of the ear. The sequence of media, or substances, through which the vibrations pass is solid (outer ear), liquid (middle ear), and then solid again (cochlea in the inner ear). Therefore, the correct answer to the third question is A. solid to liquid to solid.